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| 1 | Kinetics of the accumulation of group 2 innate lymphoid cells in IL-33-induced and IL-25-induced murine models of asthma:a potential role for the chemokine CXCL16显示文摘ILC2s are implicated in asthma pathogenesis, but little is known about the mechanisms underlying their accumulation in airways.We investigated the time course of ILC2 accumulation in different tissues in murine models of asthma induced by a serial per-nasalchallenge with ovalbumin (OVA), house dust mice (HDM), IL-25 and IL-33 and explored the potential roles of ILC2-attractingchemokines in this phenomenon. Flow cytometry was used to enumerate ILC2s at various time points. The effects of cytokines andchemokines on ILC2 migration were measured in vitro using a chemotaxis assay and in vivo using small animal imaging. Comparedwith saline and OVA challenge, both IL-25 and IL-33 challenge alone induced significant accumulation of ILC2s in the mediastinallymph nodes, lung tissue and bronchoalveolar lavage fluid of challenged animals, but with a distinct potency and kinetics. In vitro,IL-33 and CXCL16, but not IL-25 or CCL25, directly induced ILC2 migration. Small animal in vivo imaging further confirmed that asingle intranasal provocation with IL-33 or CXCL16 was sufficient to induce the accumulation of ILC2s in the lungs followinginjection via the tail vein. Moreover, IL-33-induced ILC2 migration involved the activation of ERK1/2, p38, Akt, JNK and NF-κB, whileCXCL16-induced ILC2 migration involved the activation of ERK1/2, p38 and Akt. These data support the hypothesis that epitheliumderived IL-25 and IL-33 induce lung accumulation of ILC2s, while IL-33 exerts a direct chemotactic effect in this process. AlthoughILC2s express the chemokine receptors CXCR6 and CCR9, only CXCL16, the ligand of CXCR6, exhibits a direct chemoattractanteffect. | Yan Li Shihao Chen Yafei Chi Yiran Yang Xiwen Chen Huating Wang Zhe Lv Jingjing Wang Linjie Yuan Ping Huang Kewu Huang Chris JCorrigan Wei Wang Sun Ying | 2019 | Cellular & Molecular Immunology2019，16，1： | 13 |
| 2 | Hydraulic support crushed mechanism for the shallow seam mining face under the roadway pillars of room mining goaf显示文摘While the fully-mechanized longwall mining technology was employed in a shallow seam under a room mining goaf and overlained by thin bedrock and thick loose sands, the roadway pillars in the abandoned room mining goaf were in a stress-concentrated state, which may cause abnormal roof weighting, violent ground pressure behaviours, even roof fall and hydraulic support crushed(HSC) accidents. In this case,longwall mining safety and efficiency were seriously challenged. Based on the HSC accidents occurred during the longwall mining of 3-1-2 seam, which locates under the intersection zone of roadway pillars in the room mining goaf of 3-1-1 seam, this paper employed ground rock mechanics to analyse the overlying strata structure movement rules and presented the main influence factors and determination methods for the hydraulic support working resistance. The FLAC3 D software was used to simulate the overlying strata stress and plastic zone distribution characteristics. Field observation was implemented to contrastively analyse the hydraulic support working resistance distribution rules under the roadway pillars in strike direction, normal room mining goaf, roadway pillars in dip direction and intersection zone of roadway pillars. The results indicate that the key strata break along with rotations and reactions of the coal pillars deliver a larger concentrated load to the hydraulic support under intersection zone of roadway pillars than other conditions. The ‘‘overburden strata-key strata-roadway pillars-immediate roof' integrated load has exceeded the yield load that leads to HSC accidents. Findings in HSC mechanism provide a reasonable basis for shallow seam mining, and have important significance for the implementation of safe and efficient mining. | Wang Fangtian Duan Chaohua Tu Shihao Liang Ningning Bai Qingsheng | 2017 | International Journal of Mining Science and Technology2017，27，5： | 8 |
| 3 | The Chinese Hα Solar Explorer(CHASE) mission: An overview显示文摘The Chinese Hα Solar Explorer(CHASE), dubbed “Xihe”—Goddess of the Sun, was launched on October 14, 2021 as the first solar space mission of China National Space Administration(CNSA). The CHASE mission is designed to test a newly developed satellite platform and to acquire the spectroscopic observations in the Hα waveband. The Hα Imaging Spectrograph(HIS)is the scientific payload of the CHASE satellite. It consists of two observational modes: raster scanning mode and continuum imaging mode. The raster scanning mode obtains full-Sun or region-of-interest spectral images from 6559.7 to 6565.9 ? and from 6567.8 to 6570.6 ? with 0.024 ? pixel spectral resolution and 1 min temporal resolution. The continuum imaging mode obtains photospheric images in continuum around 6689 ? with the full width at half maximum of 13.4 ?. The CHASE mission will advance our understanding of the dynamics of solar activity in the photosphere and chromosphere. In this paper, we present an overview of the CHASE mission including the scientific objectives, HIS instrument overview, data calibration flow, and first results of on-orbit observations. | Chuan Li Cheng Fang Zhen Li MingDe Ding PengFei Chen Ye Qiu Wei You Yuan Yuan MinJie An HongJiang Tao XianSheng Li Zhe Chen Qiang Liu Gui Mei Liang Yang Wei Zhang WeiQiang Cheng JianXin Chen ChangYa Chen Qiang Gu QingLong Huang MingXing Liu ChengShan Han HongWei Xin ChangZheng Chen YiWei Ni WenBo Wang ShiHao Rao HaiTang Li Xi Lu Wei Wang Jun Lin YiXian Jiang LingJie Meng Jian Zhao | 2022 | Science China(Physics,Mechanics & Astronomy)2022，65，8： | 7 |
| 4 | Top-emitting thermally activated delayed fluorescence organic light-emitting devices with weak light-matter coupling显示文摘Resonance interaction between a molecular transition and a confined electromagnetic field can lead to weak or strong light-matter coupling.Considering the substantial exciton–phonon coupling in thermally activated delayed fluorescence(TADF)materials,it is thus interesting to explore whether weak light-matter coupling can be used to redistribute optical density of states and to change the rate of radiative decay.Here,we demonstrate that the emission distribution of TADF emitters can be reshaped and narrowed in a top-emitting organic light-emitting device(OLED)with a weakly coupled microcavity.The Purcell effect of weak microcavity is found to be different for TADF emitters with different molecular orientations.We demonstrate that radiative rates of the TADF emitters with vertical orientation can be substantial increased in weakly coupled organic microcavity.These observations can enhance external quantum efficiencies,reduce efficiency roll-off,and improve color-purities of TADF OLEDs,especially for emitters without highly horizontal orientation. | Chunxiu Zang Shihao Liu Mengxin Xu Ruifang Wang Chen Cao Zelin Zhu Jiaming Zhang Hui Wang Letian Zhang Wenfa Xie Chun-Sing Lee | 2021 | Light(Science & Applications)2021，10，7： | 7 |
| 5 | A Network Traffic Prediction Method Based on LSTM显示文摘As the network sizes continue to increase,network traffic grows exponentially.In this situation,how to accurately predict network traffic to serve customers better has become one of the issues that Internet service providers care most about.Current traditional network models cannot predict network traffic that behaves as a nonlinear system.In this paper,a long short-term memory(LSTM)neural network model is proposed to predict network traffic that behaves as a nonlinear system.According to characteristics of autocorrelation,an autocorrelation coefficient is added to the model to improve the accuracy of the prediction model.Several experiments were conducted using real-world data,showing the effectiveness of LSTM model and the improved accuracy with autocorrelation considered.The experimental results show that the proposed model is efficient and suitable for real-world network traffic prediction. | WANG Shihao ZHUO Qinzheng YAN Han LI Qianmu QI Yong | 2019 | ZTE Communications2019，17，2： | 6 |
| 6 | Pd-Catalyzed C-S Cyclization via C-H Functionalization Strategy: Access to Sulfur-containing Benzoheterocyclics显示文摘 | Shihao then Ming Wang Xuefeng Jiang | 2018 | Chinese Journal of Chemistry2018，36，10： | 4 |
| 7 | Medicinals with properties of warming Yang and tonifying Qi in terms of Traditional Chinese Medicine: their effects on left ventricular ejection fraction and aldosterone in rats with induced failure heart显示文摘OBJECTIVE: To investigate on Left ventricular ejection fraction value and aldosterone of two medicinals of Traditional Chinese Medicine(TCM) with the properties of warming Yang and tonifying Qi in terms of TCM theory.METHODS: An animal model of coronary ligation of heart failure after myocardial infarction was employed to study the influence of these two kinds of drugs on three batches of rats. On the basis of the average score of left ventricle ejection fraction during the investigation, there were some different groups, including Wen Yang(the warming Yang)group, Yi Qi(tonifying Qi) group, Wen Yang and Yi Qi group, captopril group, digoxin group. In additional, an artificial operation group was set for compari-son. The systemic intervention using these medicinal and drugs was taken effects on the 2nd day after the operation of myocardial infraction(MI) with once a day. At week one, two, and four after the MI treatment, evaluated were EF values, and ferritin,angiotensin-II and aldosterone in the rats' plasma.RESULTS: At week one and week two, the medicinal of Wen Yang, Yi Qi, Wen Yang pluse Yi Qi, and digoxin could improve left ventricular ejection fraction in rats with heart failure; Compared to the model group, captopril Left ventricular EF value increased, but there was not significant. At week four,heart failure and left ventricular EF values was improved in the intervention group and the other four captopril drug intervention. At week one in the rats with drug intervention, the medicinals of Yi Qi, Wen Yang plus Yi Qi, and captopril could inhibit activation in vivo hormone aldosterone in heart failure rats; aldosterone in Wen Yang group and digoxin group were not different from that in the model group at week two and four.CONCLUSION: Chinese medicinals with properties of Wen Yang, Yi Qi have significant effect on improving left ventricular EF in rats with heart failure; compared to Yi Qi medicinals, Wen Yang medicinals that inhibit the effectiveness of the time required for the activation of the role of aldosterone. The medicinals of Wen Yang and Yi Qi seems better by inhibiting the activation of the hormone aldosterone after failing to inhibit ventricular remodeling to improve heart failure. | Han Lihua Wang Zhentao Chai Songbo Xing Guohui Wang Hongxing Yuan Bin Li Zhiwei Su Shihao | 2016 | Journal of Traditional Chinese Medicine2016，36，6： | 4 |
| 8 | An Improved Model for Evaluating Ecosystem Service Values Using Land Use/Cover and Vegetation Parameters显示文摘It is crucial to maintain the balance of economic development and ecosystem protection. The value of ecosystem services is an indicator to help people understand the importance of ecosystem protection. Traditional models estimate ecosystem service values only according to land use/cover data while ignoring vegetation status differences in the same land use/cover. This study uses the normalized difference vegetation index(NDVI), the leaf area index(LAI),and net primary productivity(NPP) as vegetation status data to describe the differences in the same land use/cover type. The principal component analysis(PCA) approach is used to reduce the correlations among the three types of vegetation status data. Then, the calculated vegetation status index after PCA is input into the estimation model. The case study in China shows that the improved model has two major advantages. First, it can clearly distinguish the differences in ecosystem service values even for the same land use/cover type. Second, it can clearly describe the transitional zones between different land use/cover types through continuous changes in ecosystem service values. This improved model can provide a more detailed description of the distribution characteristics of ecosystem service values in China and help policymakers balance economic development and ecosystem protection. | Fang-Cheng ZHOU Xiuzhen HAN Shihao TANG Xiaoning SONG Hao WANG | 2021 | Journal of Meteorological Research2021，35，1： | 4 |
| 9 | Principle and application of three-band gradient difference vegetation index显示文摘Vegetation index is a simple, effective and experiential measurement of terrestrial vegetation activity, and plays a very important role in qualitative and quantitative remote sensing. Aiming at shortages of current vegetation indices, and starting from the analysis of vegetation spectral characteristics, we put forward a new vegetation index, the three-band gradient difference vegetation index (TGDVI), and established algorithms to inverse crown cover fraction and leaf area index (LAI) from it. Theoretical analysis and model simulation show that TGDVI has high saturation point and the ability to remove the influence of background to some degree, and the explicit functional relation with crown cover fraction and LAI can be established. Moreover, study shows that TGDVI also has the ability to partly remove the influence of thin cloud. Experiment in the Shunyi District, Beijing, China shows that reasonable result can be reached using the vegetation index to retrieve LAI. We also theoretically analyzed the reason why the normalized difference vegetation index (NDVI) owns the low saturation point, and show that it is determined by the definition of NDVI and the characteristic of vegetation spectra, and is unavoidable to some degree. Meanwhile, through model simulation, we also indicate that the relationship between simple ratio vegetation index (SR) and LAI closes to a piecewise linear one instead of a linear one, which is mainly caused by the influence of background and different change rates of reflectance in red and infrared bands with LAI increasing. | TANG Shihao, ZHU Qijiang, WANG Jindi, ZHOU Yuyu & ZHAO Feng Research Center for Remote Sensing and GIS, Department of Geography, Beijing Normal University, Beijing 100875, China National Satellite Meteorological Center, China Meteorological Administration, Beijing 100081, China | 2005 | Science China Earth Sciences2005，48，2： | 4 |
| 10 | Gecko-inspired composite micro-pillars with both robust adhesion and enhanced dry self-cleaning property显示文摘Self-cleaning surfaces are desirable in many engineering applications where low energy consumption,reusability and sustainability are of the biggest concerns.Inspired by the gecko’s unique ’dry selfcleaning’ hierarchical structures.Here we fabricated artificial Fe304/PDMS composites that show robust self-cleaning capabilities.The enhanced adhesion performance is attributable to the decrease of PDMS polymerization degree and the load transfer between PDMS matrix and Fe304 magnetic particles.The self-cleaning surfaces showed up to 24.3% self-cleaning rate with as few as 4 steps.Simulation result indicated that the changing of cross linking between Fe304 and PDMS is the main reason for the enhanced self-cleaning surfaces.This work reveals an alternative route of making high-performance self-cleaning smart surfaces that are applicable in the textile industry,robotic locomotion/gripping technology,outerspace explorations and tissue engineering. | Xiaoxiao Dong Hong Zhao Zhihang Wang Miray Ouzounian Travis Shihao Hu Yongjian Guo Lipeng Zhang Quan Xu | 2019 | Chinese Chemical Letters2019，30，12： | 3 |
| 11 | Calibration procedures for the CHASE/HIS science data显示文摘The Hα line is an important optical line in solar observations containing the information from the photosphere to the chromosphere. To study the mechanisms of solar eruptions and the plasma dynamics in the lower atmosphere, the Chinese Hα Solar Explorer(CHASE) was launched into a Sun-synchronous orbit on October 14, 2021. The scientific payload of the CHASE satellite is the Hα Imaging Spectrograph(HIS). The CHASE/HIS acquires, for the first time, seeing-free Hα spectroscopic observations with high spectral and temporal resolutions. It consists of two observational modes. The raster scanning mode provides full-Sun or region-of-interest spectra at Hα(6559.7-6565.9 ?) and Fe I(6567.8-6570.6 ?) wavebands. The continuum imaging mode obtains full-Sun photospheric images at around 6689 ?. In this paper, we present detailed calibration procedures for the CHASE/HIS science data, including the dark-field and flat-field correction, slit image curvature correction, wavelength and intensity calibration, and coordinate transformation. The higher-level data products can be directly used for scientific research. | Ye Qiu ShiHao Rao Chuan Li Cheng Fang MingDe Ding Zhen Li YiWei Ni WenBo Wang Jie Hong Qi Hao Yu Dai PengFei Chen XiaoSheng Wan Zhi Xu Wei You Yuan Yuan HongJiang Tao XianSheng Li YuKun He Qiang Liu | 2022 | Science China(Physics,Mechanics & Astronomy)2022，65，8： | 3 |
| 12 | A cynomolgus monkey with naturally occurring Parkinson’s disease显示文摘Evidence for the existence of monkeys with spontaneous Parkinson’s disease(PD)has been lacking.Here,we screened macaque colonies at the Kunming Primate Research Center(Association for Assessment and Accreditation of Laboratory Animal Care(AAALAC)accredited),Kunming Institute of Zoology,Chinese Academy of Sciences,which has a large population of monkeys(>2400),to identify naturally occurring PD monkeys. | Hao Li Ling-Yan Su Lixin Yang Min Li Qianjin Liu Zhenhui Li Yan Hu Hongwei Li Shihao Wu Wenchao Wang Yingzhou Hu Zhengbo Wang Joshua DRizak Baihui Huang Min Xu Jing Wu Long-Bao Lv Christoph W.Turck Yong Yin Yong-Gang Yao Bing Su Xintian Hu | 2021 | National Science Review2021，8，3： | 3 |
| 13 | Acetytation of ACAP4 regutates CCL18-elicited breast cancer cell migration and invasion显示文摘Tumor metastasis represents the main causes of cancer-related death.Our recent study showed that chemokine CCL18 secreted from tumor-associated macrophages regulates breast tumor metastasis,but the underlying mechanisms remain less clear.Here, we show that ARF6 GTPase-activating protein ACAP4 regulates CCL18-elicited breast cancer cell migration via the acetyltransferase PCAF-mediated acetylation.CCL18 stimulation elicited breast cancer cell migration and invasion via PCAF-dependent acetylation.ACAP4 physically interacts with PCAF and is a cognate substrate of PCAF during CCL18 stimulation.The acetylation site of ACAP4 by PCAF was mapped to Lys311 by mass spectrometric analyses.Importantly,dynamic acetylation of ACAP4 is essential for CCL18-induced breast cancer cell migration and invasion,as overexpression of the persistent acetylation-mimicking or nonacetylatable ACAP4 mutant blocked CCL18-elicited cell migration and invasion.Mechanistically,the acetylation of ACAP4 at Lys311 reduced the lipid-binding activity of ACAP4 to ensure a robust and dynamic cycling of ARF6-ACAP4 complex with plasma membrane in response to CCL18 stimulation.Thus,these results present a previously undefined mechanism by which CCL18-elicited acetylation of the PH domain controls dynamic interaction between ACAP4 and plasma membrane during breast cancer cell migration and invasion. | Xiaoyu Song Wei Liu Xiao Yuan Jiying Jiang Wanjuan Wang McKay Mullen Xuannv Zhao Yin Zhang Fusheng Liu Shihao Du Adeel Rehman Ruijun Tian Jian Li Andra Frost Zhenwei Song Hadiyah-Nicole Green Calmour Henry Xing Liu Xia Ding Dongmei Wang Xuebiao Yao | 2018 | Journal of Molecular Cell Biology2018，10，6： | 3 |
| 14 | Dislocation-strained MoS_(2)nanosheets for high-efficiency hydrogen evolution reaction显示文摘Defect engineering is one of the effective strategies to optimize the physical and chemical properties of molybdenum disulfide(MoS_(2))to improve catalytic hydrogen evolution reaction(HER)performance.Dislocations,as a typical defect structure,are worthy of further investigation due to the versatility and sophistication of structures and the influence of local strain effects on the catalytic performance.Herein,this study adopted a low-temperature hydrothermal synthesis strategy to introduce numerous dislocation-strained structures into the in-plane and out-of-plane of MoS_(2)nanosheets.Superior HER catalytic activity of 5.85 mmol·g^(−1)·h^(−1)under visible light was achieved based on the high-density dislocations and the corresponding strain field.This work paves a new pathway for improving the catalytic activity of MoS_(2)via a dislocation-strained synergistic modulation strategy. | Shihao Wang Longlu Wang Lingbin Xie Weiwei Zhao Xia Liu Zechao Zhuang YanLing Zhuang Jing Chen Shujuan Liu Qiang Zhao | 2022 | Nano Research2022，15，6： | 2 |
| 15 | A new die-cast magnesium alloy for applications at higher elevated temperatures of 200-300℃显示文摘The development of lightweight magnesium(Mg)alloys capable of operating at elevated temperatures of 200-300℃and the ability of using high pressure die casting for high-volume manufacturing are the most advanced developments in manufacturing critical parts for internal combustion engines used in power tools.Here we report the microstructure and mechanical properties of a newly developed die-cast Mg-RE(La,Ce,Nd,Gd)-Al alloy capable of working at higher elevated temperatures of 200-300℃.The new alloy delivers the yield strength of 94 MPa at 300℃,which demonstrates a 42%increase over the benchmark AE44 high temperature die-cast Mg alloy.The new alloy also has good stiffness at elevated temperatures with its modulus only decreasing linearly by 13%from room temperature up to 300℃.Thermal analysis shows a minor peak at 364.7℃in the specific heat curve of the new alloy,indicating a good phase stability of the alloy up to 300℃.Nd and Gd have more affinity to Al for the formation of the minority of divorced Al-RE(Nd,Gd)based compounds,and the stable Al-poor Mg_(12)RE(La_(0.22)Ce_(0.13)Nd_(0.31)Gd_(0.31))Zn_(0.39)Al_(0.13)compound acts as the continuous inter-dendritic network,which contribute to the high mechanical performance and stability of the new die-cast Mg alloy at 200-300℃. | Xixi Dong Lingyun Feng Shihao Wang Eric A.Nyberg Shouxun Ji | 2021 | Journal of Magnesium and Alloys2021，9，1： | 2 |
| 16 | Relationship between corneal biomechanical parameters and corneal sublayer thickness measured by Corvis ST and UHR-OCT in keratoconus and normal eyes显示文摘Background:To explore the relationship between corneal biomechanical parameters and corneal sublayer thickness using corneal visualization Scheimpflug technology(Corvis ST)and ultrahigh-resolution optical coherence tomography(UHR-OCT)in clinical and suspected keratoconus and normal eyes.Methods:Cross-sectional prospective study.A total of 94 eyes of 70 participants were recruited.Twenty five eyes of 19 keratoconus patients,52 eyes of 34 patients showing high risk of developing keratoconus according to the Belin/Ambrosio Enhanced Ectasia Display,and each eye of 17 normal subjects were enrolled.All participants underwent Corvis ST,Pentacam,and UHR-OCT examinations at the same time.Stiffness parameter A1(SP-A1),deformation amplitude ratio(DA ratio),and other biomechanical parameters were recorded using Corvis ST.The vertical and horizontal thickness profiles of central 3mm corneal epithelium,Bowman’s layer,and stroma as measured by the perpendicular distance between the neighboring interfaces were generated using UHR-OCT.The flat keratometry and steep keratometry were obtained using Pentacam.Analysis of correlation was applied to explore the association between variables.Results:Most of the biomechanical parameters and corneal sublayer thickness profiles showed statistical differences among three groups.A statistically significant linear relationship was noted between SP-A1 and DA ratio in all three groups.SP-A1 was found to be positively correlated with epithelial and Bowman’s layer thickness in the keratoconus(KC)group,and with stromal thickness in all three groups.In the normal and suspected keratoconus(SKC)groups,only stromal thickness was included in the stepwise linear regression to predict SP-A1,whereas in the KC group,steep keratometry and Bowman’s layer thickness were included.Conclusions:Significant and different correlations were noted between corneal stiffness and corneal sublayer thickness in different groups,indicating that corneal sublayers may play different roles in maintaining corneal biomechanical stability between keratoconus and normal eyes. | Yong Li Zhiqiang Xu Qiaoli Liu Yuzhou Wang Kan Lin Jiahui Xia Shihao Chen Liang Hu | 2021 | Eye and Vision2021，8，1： | 2 |
| 17 | Nanomedicine potentiates mild photothermal therapy for tumor ablation显示文摘The booming photothermal therapy(PTT)has achieved great progress in non-invasive oncotherapy,and paves a novel way for clinical oncotherapy.Of note,mild temperature PTT(mPTT)of 42–45°C could avoid treatment bottleneck of the traditional PTT,including nonspecific injury to normal tissues,vasculature and host antitumor immunity.However,cancer cells can resist mPTT via heat shock response and autophagy,thus leading to insufficient mPTT monotherapy to ablate tumor.To overcome the deficient antitumor efficacy caused by thermo-resistance of cancer cells and mono mPTT,synergistic therapies towards cancer cells have been conducted with mPTT.This review summarizes the recent advances in nanomedicine-potentiated mPTT for cancer treatment,including strategies for enhanced single-mode mPTT and mPTT plus synergistic therapies.Moreover,challenges and prospects for clinical translation of nanomedicine-potentiated mPTT are discussed. | Zijun Jiang Tianyi Li Hao Cheng Feng Zhang Xiaoyu Yang Shihao Wang Jianping Zhou Yang Ding | 2021 | Asian Journal of Pharmaceutical Sciences2021，16，6： | 2 |
| 18 | Redox-active conjugated microporous polymers as electron-accepting organic pseudocapacitor electrode materials for flexible energy storage显示文摘Efficient energy storage devices,i.e.pseudocapacitors,are being intensively pursued to address the environmental and energy crises.Most high-performance pseudocapacitors are based on inorganic materials,while organic materials with broader synthetic tunability have attracted increasing interest.Despite recent progress,electron-deficient(n-type)organic pseudocapacitive materials for flexible energy storage are highly demanded yet remain largely unexplored.Here a novel set of n-type perylene diimide(PDI)based conjugated microporous polymers(CMPs),namely,CMP-1,CMP-2 and CMP-3,have been created to integrate excellent desirable characteristics as organic pseudocapacitor electrode materials for flexible energy storage.In light of electron-accepting redox-active sites,hierarchically porous structures,as well as amide-linked networks,the PDI-CMPs electrodes displayed n-type pseudocapacitive behaviors with high capacity(139-205 F g^(-1)at 0.5 A g^(-1)),wide and negative biases(-1.0 to 0 V vs.Ag/AgCl),and long cycling stability.CMP-3 consisting of tetraphenylmethane three-dimensional(3D)building block and PDI units demonstrates not only higher capacitance but also better performance stability because of the higher specific surface area and faster diffusion kinetics as compared to its counterpart CMP-1.Asymmetric supercapacitors(SCs)based on CMP-3 and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)(PEDOT/PSS)exhibited wider potential window(1.8 V)and higher capacitance(17.4 m F cm^(-2))compared with symmetric SCs based on PEDOT/PSS electrodes.Notably,CMP-3 also demonstrates attractive potentials as the anode for rechargeable Li-ion batteries.The study sheds light on the fundamental understanding of the key structural parameters that determine their electrochemical and transport properties,thus opening a new door for the rational design of efficient and stable n-type organic electrode materials for flexible energy storage applications. | Xu Liu Gengzhi Sun Yujiao Gong Cheng-Fang Liu Shi Wang Shihao Xu Xuanli Yang Lei Yang Wen-Yong Lai | 2022 | Science China Chemistry2022，65，9： | 2 |
| 19 | Cobalt diselenide (001) surface with short-range Co-Co interaction triggering high-performance electrocatalytic oxygen evolution显示文摘Oxygen evolution reaction (OER) still suffers from the bottleneck in electrocatalytic water splitting. Herein, in virtue of volcano plots drawn by theoretical calculation, the (001) facet was screened as the superb facet of orthorhombic CoSe_(2) for OER. Afterwards, CoSe_(2)(001) nanosheets were synthesized and the exposure ratio of (001) facet is controllable with thermodynamics methods effectively. The single-facet CoSe2(001) delivered an overpotential as low as 240 mV at 10 mA·cm^(−2) in 1 M KOH, which outperformed the bulk (380 mV) as well as other CoSe_(2)-base OER catalysts reported before. Especially, a shorter Co-Co path was observed in CoSe_(2)(001) by X-ray absorption spectroscopy. Further density functional theory (DFT) studies revealed that the reversible compression on the shorter Co-Co path could regulate the electronic structure of active sites during the OER process, and thus the energy barrier of the rate-determining step was reduced by 0.15 eV. This work could inspire more insights on the modification of electronic structure for OER electrocatalysts. | Kun Dang Shihao Zhang Xuewei Wang Wenming Sun Ligang Wang Yang Tian Sihui Zhan | 2021 | Nano Research2021，14，12： | 2 |
| 20 | Morphologically templated nucleation of primary Si on AlP in hypereutectic Al-Si alloys显示文摘AlP has been widely used as an effective heterogenous nucleus for primary Si phase in hypereutectic AlSi alloys,but the morphological correlation between AlP and primary Si is still confusing.In the present work,the morphologies of AlP crystals were studied comprehensively by experimental observation and theorical prediction.It is found that AlP collected from an Al-0.03 P melt could be divided into two categories:spinel twin crystals and non-twin crystals.During the nucleation process,these two kinds of AlP crystals triggered morphologically templated nucleation of primary Si phase,resulting in the formation of hexagonal primary Si twin and octahedral non-twin crystals,respectively.As such,the percentage of primary Si twin crystals in the experimental Al-18 Si alloy was also increased obviously after the morphologically templated nucleation via Al P.The morphologically templated nucleation also eliminated the dendritic growth of primary Si phase and the formation of hopper structures inside primary Si,forcing primary Si to maintain to be faceted solid crystals through layer-by-layer growing mechanism.The insight into morphologically templated nucleation offers a new view in understanding the mechanism of heterogeneous nucleation of primary Si phase on AlP nuclei. | Xiangzhen Zhu Shihao Wang Xixi Dong Xiangfa Liu Shouxun Ji | 2022 | Journal of Materials Science & Technology2022，，5： | 2 |
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