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| 1 | Issues and solutions toward zinc anode in aqueous zinc-ion batteries: A mini review显示文摘Aqueous zinc-ion batteries(ZIBs)have been intensively investigated as potential energy storage devices on account of their low cost,environmental benignity,and intrinsically safe merits.With the exploitation of highperformance cathode materials,electrolyte systems,and in-depth mechanism investigation,the electrochemical performances of ZIBs have been greatly enhanced.However,there are still some challenges that need to be overcome before its commercialization.Among them,the obstinate dendrites,corrosion,and hydrogen evolution reaction(HER)on Zn anodes are critical issues that severely limit the practical applications of ZIBs.To address these issues,various strategies have been proposed,and tremendous progress has been achieved in the past few years.In this article,we analyze the origins and effects of the dendrites,corrosion,and HER on Zn anodes in neutral and mildly acid aqueous solutions at first.And then,a scientific understanding of the fundamental design principles and strategies to suppress these problems are emphasized.Apart from these,this article also puts forward some requirements for the practical applications of Zn anodes as well as several cost-effectivemodifying strategies.Finally,perspectives on the future development of Zn anodes in aqueous solutions are also briefly anticipated.This article provides pertinent insights into the challenges on anodes for the development of highperformance ZIBs,which will greatly contribute to their practical applications. | Chunlin Xie Yihu Li Qi Wang Dan Sun Yougen Tang Haiyan Wang | 2020 | Carbon Energy2020，2，4： | 15 |
| 2 | Significantly enhanced oxygen reduction activity of Cu/CuN_xC_y co-decorated ketjenblack catalyst for Al–air batteries显示文摘Highly efficient and non-precious catalysts are imperative for oxygen reduction reaction(ORR) to replace Pt/C. Anchoring efficient active species to carbon supports is a promising and scalable strategy. Here we synthesize Cu nanoparticles and noncrystalline CuN_xC_y species co-decorated ketjenblack(KB) carbon catalyst(denoted as Cu-N-KB-acid) by a facile and scalable method using copper sulfate, melamine, and KB as raw materials. An initial one-pot hydrothermal treatment is designed before pyrolysis process to achieve the good distribution of Cu and melamine on KB via a possible chelation effect. Owing to the synergistic effect of Cu and CuN_xC_y on KB, this composite catalyst displays excellent ORR catalytic activity in alkaline solution, which is comparable to the commercial 20% Pt/C. When used as a catalyst in a home-made Al-air battery, it shows a stable discharge voltage of 1.47 V at a discharge density of 50 mA cm^(-2), a little higher than that of Pt/C(1.45 V). | Fuzhi Li Jingsha Li Qiuju Feng Jun Yan Yougen Tang Haiyan Wang | 2018 | Journal of Energy Chemistry2018，27，2： | 4 |
| 3 | Highly sensitive flexible capacitive pressure sensor with a broad linear response range and finite element analysis of micro-array electrode显示文摘With the continuous development of wearable electronics,health care and smart terminals,highly performance flexible pressure sensors present a huge application prospect.In this study,by introducing the micro-array structured electrodes and dielectric layers with high dielectric constant,capacitive pressure sensor fabricated with a brand new preparation strategy and highly sensitive is proposed.The prepared micro-array structure is the basis for sensors with high sensitivity.Besides,the contact area between the two electrodes changes from linear to planar with the increased loading,which result in a wider linear responding range.In addition,by introducing ceramic dielectric material-barium titanate(BT)fillers into the dielectric layer to increase it’s the dielectric constant,the sensitivity of the sensor shows two-fold increase.Moreover,the sensitivity gradients can be tuned by changing the loading contents of BT particles.Hence,compared with parallel board capacitive sensors with ordinary dielectric layer,these sensors exhibit excellent performance as follow,high sensitivity(up to 4.9 kPa^(-1))under low pressure range(0-2500 Pa),low detection limit(<1.7 Pa),short response time(<50 ms),a stable response over 5000 loading-unloading cycles,bending stability and an adjustable sensitivity.Further,the flexible pressure sensor can detect the pressure of the water droplets and monitor human movement behavior.With the facile design and excellent comprehensive properties,the flexible pressure sensor provides a new approach to improve the sensitivity and shows a broad application prospects in the wearable electronics,health care and smart terminals. | Longquan Ma Xuecheng Yu Yuanyuan Yang Yougen Hu Xinyu Zhang Huayuan Li Xing Ouyang Pengli Zhu Rong Sun Ching-ping Wong | 2020 | Journal of Materiomics2020，6，2： | 4 |
| 4 | Trimetallic oxyhydroxides as active sites for large-current-density alkaline oxygen evolution and overall water splitting显示文摘Earth-abundant electrocatalysts for large-current-density water splitting under alkaline condition are desirable.Oxygen evolution reaction,which is a bottleneck of the overall water splitting,faces the problems of complicated reconstruction and deficiency in rational design of active sites.Herein,we report a series of transition metal chalcogenides for alkaline OER.Among them,FeCoNi(S)displayed a low overpotential of 293 m V to deliver a current density of 500 m A cm^(-2),which is in the top level of non-precious metal based OER electrocatalysts.A combination of(ex)in situ characterizations and DFT calculation shows that Ni(Fe,Co)trimetallic oxyhydroxides were the active sites for highly-efficient OER.Furthermore,for FeCoNi(S),when used as a bifunctional catalyst for water splitting,it only required a cell voltage of 1.84 V to deliver~500 m A cm^(-2) with extraordinary long-term stability over 2000 h.This work provides the comprehension of high-efficiency,robust catalysts for OER and overall water splitting at large current densities in alkaline media. | Lei Chen Yunpeng Wang Xin Zhao Yuchao Wang Qian Li Qichen Wang Yougen Tang Yongpeng Lei | 2022 | Journal of Materials Science & Technology2022，，15： | 3 |
| 5 | Cu/Cu_(2)O nanoparticles co-regulated carbon catalyst for alkaline Al-air batteries显示文摘Developing high-efficiency,inexpensive,and steady non-precious metal oxygen reduction reaction(ORR) catalysts to displace Pt-based catalysts is significant for commercial applications of Al-air battery.Here,we have prepared the Cu/Cu_(2)O-NC catalyst with excellent ORR performance and high stability,due to the synergistic effect of Cu and Cu_(2)O nanoparticles.The half-wave potential(0.8 V) and the limiting-current density(5.20 mA/cm^(2)) of the Cu/Cu_(2)O-NC are very close to those of the 20% Pt/C catalyst(0.82 V,5.10 mA/cm^(2)).Besides,it exhibits excellent performance with a maximal power density of 250 mW/cm^(2) and a stable continuous discharge for more than 90 h in the Al-air battery test The promoting effects of Cu_(2)O towards Cu-based ORR catalysts are illustrated as follows:(ⅰ) Cu_(2)O is the major ORR active site by the redox of Cu(Ⅱ)/Cu(Ⅰ),which provides excellent ORR activities;(ⅱ) Cu can stabilize the location of Cu_(2)O by assisting the electron transfer to Cu(Ⅱ)/Cu(Ⅰ) redox,which is conducive to the high stability of the catalyst.This work provides a useful strategy for enhancing the ORR performance of Cu-based catalysts. | Jing Tian Depei Liu Jingsha Li Dan Sun Hongtao Liu Haiyan Wang Yougen Tang | 2021 | Chinese Chemical Letters2021，32，8： | 2 |
| 6 | Intrinsically zincophobic protective layer for dendrite-free zinc metal anode显示文摘Aqueous zinc anodes have attracted the attention of many researchers owing to their high safety,low cost,and high theoretical specific capacity.However,its practical application is severely limited by the dendrite growth on zinc anode.Herein,we develop an intrinsically zincophobic barium-titanate protective layer with a porous structure to suppress the zinc dendrite formation by homogenizing the ion distribution on the anode surface,increasing the nucleation sites,and limiting the irregular zinc growth.Based on these synergistic effects,the coated zinc anode can exhibit long cycle life(840 h at 0.5 mA/cm^(2) for 0.5 mAh/cm^(2))and low voltage hysteresis(36 mV).This work can provide a feasible direction for the design of intrinsically zincophobic coating materials to uniformize the zinc stripping and plating. | Chunlin Xie Qi Zhang Zefang Yang Huimin Ji Yihu Li Huanhuan Li Liang Fu Dan Huang Yougen Tang Haiyan Wang | 2022 | Chinese Chemical Letters2022，33，5： | 1 |
| 7 | Sol-gel synthesis and photoluminescence characterization of La_2Ti_2O_7:Eu^(3+) nanocrystals显示文摘Eu3+ doped La2Ti2O7 nanocrystals with pure monoclinic phase and size of about 100 nm were prepared by a citric acid(CA) assisted sol-gel method.Techniques of thermo-gravimetric(TG) and differential scanning calorimetry(DSC) ,X-ray diffraction(XRD) ,as well as transmis-sion electron microscopy(TEM) were employed to characterize the as-synthesized nanoparticles.Furthermore,photoluminescence(PL) performances of the Eu3+ doped La2Ti2O7 nanocrystals were evaluated with focus on the effects of calcination temperature and Eu3+ doping concentration on the photoluminescence properties. | CHENG Hua LU Zhouguang LIU Ying YANG Haihua GU Yingying LI Wei TANG Yougen | 2011 | Rare Metals2011，30，6： | 1 |
| 8 | Potential active sites of Mo single atoms for electrocatalytic reduction of N_(2)显示文摘Single atom catalysts(SACs) with isolated metal atoms dispersed on supports exhibit distinctive performances for electrocatalysis reactions.The designable realization of well-dispersed single metal atoms is still a great challenge owing to their ease of aggregation.Here,Mo single atomic sites(Mo-N_(3)C)combined with some ultrasmall Mo_(2)C/MoN clusters(Mo-SA/Mo_(2)C-MoN-Cs,mean diameter <2 nm) on nitrogen-doped porous carbon were synthesized via a simple pyrolysis of bimetallic Zn/Mo metalorganic frameworks.X-ray absorption near edge spectra(XANES) in combination with various characterizations show that most of Mo species in sample exist in the form of single sites and the exact structure is Mo-N_(3)C.Density functional theory(DFT) calculation further shows that as the number of Ncoordination in the Mo-NxC moieties increases,the positive cha rge of Mo atoms increases.The single Mo atoms in Mo-N_(3)C have the best capability of N_(2) adsorption,which may serve as main active sites for further electrochemical N2 reduction. | Lei Chen Chaozheng He Ran Wang Qian Li Jian Zeng Wei Liu Yuchao Wang Qichen Wang Tong Ye Yougen Tang Yongpeng Lei | 2021 | Chinese Chemical Letters2021，32，1： | 1 |
| 9 | Functionalizing the interfacial double layer to enable uniform zinc deposition显示文摘Due to the unsatisfactory electrode/electrolyte interface,the metallic Zn dendrites and corrosion are easily induced,severely hindering the applications of zinc-ion batteries(ZIBs).Herein,a strategy that engineers the interfacial double layer by an extremely low concentration of sulfolane is proposed to tune the Zn stripping/plating behavior.It is revealed that the highly-polar sulfolane can predominately occupy the inner Helmholtz layer over water,and then regulate the upcoming Zn2+to directly deposit downward.Simultaneously,the widened Helmholtz layer can weaken the electric field intensity,which will generate more nucleation sites and reduce the nuclei radius,thereby promoting uniform zinc deposition as well.Moreover,corrosion byproducts can be inhibited since fewer water molecules can contact the Zn electrodes.Consequently,the battery performance can be naturally optimized.With an optimum amount of sulfolane,the Zn||Zn battery can operate for more than 1,100 h under1 m A cm^(-2)and 1 m Ah cm^(-2).And the as-constructed Zn||NaV_(3)O_(8)·1.5H_(2)O battery demonstrates considerably higher cycling stability than that without sulfolane.Overall,this work has provided a deep insight into constructing a functional interfacial double layer to regulate zinc deposition,which can also act as a reference for other metal-based batteries. | Yihu Li Hao Wang Tingqing Wu Chunlin Xie Zefang Yang Qi Zhang Dan Sun Yougen Tang Liang Fu Haiyan Wang | 2023 | Science China Chemistry2023，66，6： | 0 |
| 10 | Active tunable terahertz bandwidth absorber based on single layer graphene显示文摘In this paper,an active tunable terahertz bandwidth absorber based on single-layer graphene is proposed,which consists of a graphene layer,a photo crystal plate,and a gold substrate.When the Fermi energy(Ef)of graphene is 1.5 eV,the absorber shows high absorption in the range of 3.7 THz–8 THz,and the total absorption rate is 96.8%.By exploring the absorption mechanism of the absorber,the absorber shows excellent physical regulation.The absorber also shows good adjustability by changing the Efof graphene.This means that the absorber exhibits excellent tunability by adjusting the physical parameters and Efof the absorber.Meanwhile,the absorber is polarization independent and insensitive to the incident angle.The fine characteristics of the absorber mean that the absorber has superior application value in many fields such as biotechnology and space exploration. | Wenxin Li Yingting Yi Hua Yang Shubo Cheng Wenxing Yang Huafeng Zhang Zao Yi Yougen Yi Hailiang Li | 2023 | Communications in Theoretical Physics2023，75，4： | 0 |
| 11 | Development of Ecological Fishery in Poyang Lake Area显示文摘Through in-depth analysis on history and current situations of fishery development in Poyang Lake area,this paper presents location,resource and environment advantages in development of ecological fishery.According to orientation of leading functions,Poyang Lake can be divided into breeding development,capture operation,enhancement protection and ecological rehabilitation functional zones.In accordance with industrial foundation and ecological advantages of cities and counties in Poyang Lake,it determines the reasonable distribution of 8 leading industries:river crabs,shrimps(Procambarus clarkia),eels,Pengze crucian carp,Siniperca chuatsi,Channa argus,Ietalurus Punetaus,and pearl.On the basis of systematically summing up exploration experience,it comes up with the development path'ecology oriented fishery and industrialization oriented ecological fishery'for ecological fishery in Poyang Lake area.It proposes a series of key technological measures,including reducing fertilizer and drugs,increasing output and benefits,low consumption and emission,high quality and safety,and standardization,to realize a benign cycle of'cost saving,benefit increasing,quality improving and low carbon'and the multi-win objective of coordination between ecology,economy and society. | Haihua WANG Yilong FU Shengyun KANG Yougen LI Wenjing CHEN | 2013 | Asian Agricultural Research2013，5，12： | 0 |
| 12 | Micropores regulating enables advanced carbon sphere catalyst for Zn-air batteries显示文摘Energy conversion technologies like fuel cells and metal-air batteries require oxygen reduction reaction(ORR)electrocatalysts with low cost and high catalytic activity.Herein,N-doped carbon spheres(N-CS)with rich micropore structure have been synthesized by a facile two-step method,which includes the polymerization of pyrrole and formaldehyde and followed by a facile pyrolysis process.During the preparation,zinc chloride(ZnCl2)was utilized as a catalyst to promote polymerization and provide a hypersaline environment.In addition,the morphology,defect content and activity area of the resultant N-CS catalysts could be regulated by controlling the content of ZnCl2.The optimum N-CS-1 catalyst demonstrated much better catalytic activity and durability towards ORR in alkaline conditions than commercial 20 wt%Pt/C catalysts,of which the half-wave potential reached 0.844 V vs.RHE.When applied in the Zn-air batteries as cathode catalysts,N-CS-1 showed a maximum power density of 175 mW cm^(-2) and long-term discharging stability of over 150 h at 10 mA cm^(-2),which outperformed 20 wt%Pt/C.The excellent performance could be due to its ultrahigh specific surface area of 1757 m2 g1 and rich micropore channels structure.Meanwhile,this work provides an efficient method to synthesize an ultrahigh surface porous carbon material,especially for catalyst application. | Jingsha Li Shijie Yi Ranjusha Rajagopalan Zejie Zhang Yougen Tang Haiyan Wang | 2023 | Green Energy & Environment2023，8，1： | 0 |
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