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| 1 | Seedling growth and metal accumulation of selected woody species in copper and lead/zinc mine tailings显示文摘A greenhouse pot experiment was conducted to evaluate the potential of selected woody plants for revegetation in copper (Cu) and lead/zinc (Pb/Zn) mine tailing areas.Five woody species (Amorpha fruticosa Linn,Vitex trifolia Linn.var.simplicifolia Cham,Glochidion puberum (Linn.) Hutch,Broussonetia papyrifera,and Styrax tonkinensis) and one herbaceous species (Sesbania cannabina Pers) were planted in Cu and Pb/Zn tailings to assess their growth,root morphology,nutrition uptake,metal accumulation,and translocation in plants.Amorpha fruticosa maintained normal growth,while the other species demonstrated stress related growth and root development.Sesbania cannabina showed the highest biomass among the plants,although it decreased by 30% in Cu tailings and 40% in Pb/Zn tailings.Calculated tolerance index (TI) values suggested that A.fruticosa,an N-fixing shrub,was the most tolerant species to both tailings (TI values 0.92-1.01),while S.cannabina had a moderate TI of 0.65-0.81 and B.papyrifera was the most sensitive species,especially to Pb/Zn tailings (TI values 0.15-0.19).Despite the high concentrations of heavy metals in the mine tailings and plants roots,only a small transfer of these elements to the aboveground parts of the woody plants was evident from the low translocation factor (TF) values.Among the woody plants,V.trifolia var.simplicifolia had the highest TF values for Zn (1.32),Cu (0.78),and Pb/Zn (0.78).The results suggested that A.fruticosa and S.cannabina,which have the highest tolerance and biomass production,respectively,demonstrated the potential for tailings revegetation in southern China. | Xiang Shi Xiaolei Zhang Guangcai Chen Yitai Chen Ling Wang Xiaoquan Shan | 2011 | Journal of Environmental Sciences2011,23,2: | 18 |
| 2 | Hydrothermal synthesis of nano-silicon from a silica sol and its use in lithium ion batteries显示文摘有关硅阳极材料的热水的合成有很少报告。在这张手稿,从便宜硅石大音阶的第五音开始,我们热水地在 180 敨攠敶瑮在一个压热器准备了多孔的硅 nanospheres 吗? | Jianwen Liang Xiaona Li Yongchun Zhu Cong Guo Yitai Qian | 2015 | Nano Research2015,8,5: | 16 |
| 3 | PREPARATION OF ULTRAFINE METAL PARTICLES BY COMBINED METHOD γ-RAY RADIATION—HYDROTHERMAL CRYSTALLIZATION显示文摘The γ-ray radiation technique combined with hydrothermal crystallization was firstlyused to prepare ultrafine metallic particles of An,Cu and Au-Cu alloy.Particle sizefor Au in average is about 10 nm.The morphologies were observed by TEM.Thenucleation mechanism of metal particles and their stability are discussed. | CHEN Zuyao CHEN Bo QIAN Yitai ZHANG Manwei YANG Li FAN Chenggao University of Science and Technology of China,Hefei,China | 1992 | Acta Metallurgica Sinica(English Letters)1992,5,11: | 13 |
| 4 | Simple synthesis of a porous Sb/Sb2O3 nanocomposite for a high-capacity anode material in Na-ion batteries显示文摘高能力的阳极材料为钠离子电池是高度合乎需要的。这里,多孔的 Sb/Sb 2 O 3 nanocomposite 被 Sb nanocrystals 的温和氧化成功地在空中综合。在里面合成, Sb 贡献好电导率和 Sb 2 O 3 改进骑车的稳定性,特别地在 0.02-1.5 V 的电压窗户以内。它在 540 mAh 的一个可逆能力留下 ??? ′ | Jun Pan Nana Wang Yanli Zhou Xianfeng Yang Wenyao Zhou Yitai Qian Jian Yang | 2017 | Nano Research2017,10,5: | 9 |
| 5 | Carbon-coated mesoporous Co9S8 nanoparticles on reduced graphene oxide as a long-life and high-rate anode material for potassium-ion batteries显示文摘Carbon-coated mesoporous Co9S8 nanoparticles supported on reduced graphene oxide(rGO)are successfully synthesized by a simple process.This composite makes full use of the protection of the carbon layer on the surface,the good conductivity and three-dimensional(3D)structure of rGO,the mesoporous structure and nanoscale size of Co9S8,thereby presenting the excellent electrochemical performances in potassium-ion batteries,407.9 mAh·g^−1 after 100 cycles at 0.2 A·g^−1 and 215.1 mAh·g^−1 at 5 A·g^−1 in rate performances.After 1,200 cycles at 1.0 A·g^−1,this composite still remains a capacity of 210.8 mAh·g^−1.The redox reactions for potassium storage are revealed by ex-situ transmission electron microscope(TEM)/high-resolution TEM(HRTEM)images,selected area electron diffraction(SAED)patterns and X-ray photoelectron spectroscopy(XPS)spectra.The application of this composite as the host of sulfur for Li-S batteries is also explored.It sustains a capacity of 431.8 mAh·g^−1 after 800 cycles at 3 C,leading to a degradation of 0.052%per cycle.These results confirm the wide applications of this composite for electrochemical energy storage. | Guangyao Ma Xiao Xu Zhenyu Feng Chenjing Hu Yansong Zhu Xianfeng Yang Jian Yang Yitai Qian | 2020 | Nano Research2020,13,3: | 9 |
| 6 | Co0.85Se hollow spheres constructed of ultrathin 2D mesoporous nanosheets as a novel bifunctional-electrode for supercapacitor and water splitting显示文摘Hollow spheres of Co0.85Se con structed by two-dime nsional(2D)mesoporous ultrathi nnanosheets were synthesized via simple and costeffective approach.Their bifunctional electrocatalytic-supercapacitive properties were obtained simultaneously due to synergistic effects betweenmacroscopic morphological features and microscopic atomic/electronic structure of Co0.85Se.The as-synthesized hollow spheres of Co0.85Sethat are con structed by 2D mesoporous ultrathin nanosheets exhibit in spiring electrochemical performance for supercapacitor,presenting maximum energy density at high power density(54.66 Wh·kg^-1 at 1.6 kW·kg^-1)and long cycle stability(88%retention after 8,000 cycles).Atthe same time,the hollow spheres of Co0.85Se constructed by 2D mesoporous ultrathin nanosheets display excellent catalytic performaneefor oxygen evolution reaction(OER)due to special structure,high surface area and mesoporous nature of sheets,which achieve lowoverpotential(290 mV at 10 mA·g^-1)and low Tafel slope(81 mV·dec^-1)for Iong-term operation(only 7.8%decay in current density after 9 h).It could be envisioned that the proposed simple approach will pave a new way to synthesize other metal chalcoge nides for energy conversionand storage technology. | Nadeem Hussain Fangfang Wu Liqiang Xu Yitai Qian | 2019 | Nano Research2019,12,12: | 5 |
| 7 | Defect engineering on carbon black for accelerated Li-S chemistry显示文摘Rationally designing sulfur hosts with the functions of confining lithium polysulfides(LiPSs)and promoting sulfur reaction kinetics is critically important to the real implementation of lithium-sulfur(Li-S)batteries.Herein,the defect-rich carbon black(CB)as sulfur host was successfully constructed through a rationally regulated defect engineering.Thus-obtained defect-rich CB can act as an active electrocatalyst to enable the sulfur redox reaction kinetics,which could be regarded as effective inhibitor to alleviate the LiPS shuttle.As expected,the cathode consisting of sulfur and defect-rich CB presents a high rate capacity of 783.8 mA·h·g^−1 at 4 C and a low capacity decay of only 0.07% per cycle at 2 C over 500 cycles,showing favorable electrochemical performances.The strategy in this investigation paves a promising way to the design of active electrocatalysts for realizing commercially viable Li-S batteries. | Wenlong Cai Yingze Song Yuting Fang Weiwei Wang Songlin Yu Huaisheng Ao Yongchun Zhu Yitai Qian | 2020 | Nano Research2020,13,12: | 5 |
| 8 | An alternative tectonic model for the Yarlung Zangbo suture zone显示文摘The new field investigations along the Yarlung Zangbo ophiolites zone show that these series underwent low green-schist metamorphism and were then fractured and occurred as slabs in tectonic melanges,without regional tectonic polarity.No large shear zone in north-south direction has been identified between ophiolite bodies and flysch layers on both side and a conformable contact relationship can be observed locally between them.A great mass of tectonic mélange has been substantiated as submarine olistolith bodies.The Mesozoic sedimentary facies and its evolution in both north and south of the ophiolite zone are corresponding in time.The ophiolite zone has often been divided into parallel branches,separated by narrow flysch slats.There is also a similarity of the Paleozoic and the basement of the High Himalaya,Lhasa and Qiangtang Terranes,and they are distinctly different from those of the Indian continent.The geologic information does not warrant a postulate that the Himalaya and Tibet were once separated by a great ocean;it is therefore consistent with an alternative tectonic model by back-arc basin collapse with its juvenile narrow oceanic crust.The real plate tectonic suture,the Neotethys might be covered under the Miocene Siwalik molasse in the southern slope of the High Himalaya range.Based on the new model,the Neotethyan ocean floor was subducted beneath the Asia since the Late Triassic.The outer continental margin of Eurasia was split from the Lhasa Terrane so that a back-arc basin came into existence.Hemi-pelagic and deep sea sediments were deposited before the Late Cretaceous flysch sedimentation,with the linear juvenile oceanic crust when back-arc volcanism occurred in the Gandese region.The Yarlung Zangbo back-arc basin was eventually eliminated when the High Himalayas were sutured onto Eurasia.The ocean floor lightly underthrusted to north and south sides,sediments of the basin were deformed as fold-thrusting.The Neotethys was eliminated during the Tertiary when India collided with Himalaya arc from the Oligocene.The crust of southern Tibet suffered penetrative shortening,the ophiolite zone became exposed during regional uplifting,and the South Tibet Detachment System,doming in southern Tibet and rifting in a north-south direction since the Middle Miocene Epoch. | LIU XiaoHan JU YiTai WEI LiJie LI GuangWei | 2010 | Science China Earth Sciences2010,53,1: | 4 |
| 9 | Synthesis of carbon nanotubes-supported porous silicon microparticles in low-temperature molten salt for highperformance Li-ion battery anodes显示文摘Silicon-based materials has attracted attention as a promising candidate for lithium-ion batteries(LIBs)with high energy density.However,severe volume variation,pulverization,and poor conductivity hindered the development of Si based materials.In this study,porous Si microparticles supported by carbon nanotubes(p-Si/CNT)are fabricated through simple molten salt assisted dealloying process at low temperature followed by acid treatment.The ZnCl2 molten salt not only provides the liquid environment to enhance the reaction,but also participates the dealloying process and works as template for porous structure when removes by acid treatment.Additionally,distribution of defect sites in CNTs also increases after molten salt process.Density function theory(DFT)calculations further prove the defects could improve the adsorption of Li+.The participation of CNTs can also contribute to the reaction kinetics and retain the integrity of the electrode.As expected,the p-Si/CNT anode manifests enhanced lithium-storage performance in terms of superior cycling stability and good rate capability.The p-Si/CNT//LiCoO_(2) full cell assembly further demonstrates its potential as a prospective anode for high-performance LIBs. | Qianliang Zhang Baojuan Xi Weihua Chen Jinkui Feng Yitai Qian Shenglin Xiong | 2022 | Nano Research2022,15,7: | 4 |
| 10 | γ-Radiation synthesis of nanocrystalline nickel powder from nickel (Ⅱ ) -ammonia complex solution显示文摘NANOCRYSTALLINE nickel is very important for its applications in the fields such as catalysis andmagnetic materials.The usual method used for preparing nanocrystalline nickel is inert gas e-vaporation,which requires high temperature.However,high temperature easily leads tothe growth or oxidation of nickel particles.Marignier et al.reported the nickel microaggre-gates dispersed in solution produced by γ-irradiating a dilute solution of Ni2+ | ZHU Yingjie, QIAN Yitai and ZHANG Manwei1. Department of Applied Chemistry, University of Science and Technology of China, Hefei 230026, China 2. Structure Research Laboratory, University of Science and Technology of China, Hefei 230026, China | 1997 | Chinese Science Bulletin1997,42,8: | 3 |
| 11 | Leakage research on supercritical carbon dioxide fluid in rolling piston expander显示文摘The leakage research on supercritical carbon dioxide fluid in rolling piston expander was investigated experimentally.Using expander instead of throttle valve is an important way to improve the efficiency of carbon dioxide refrigeration system.However,the supercritical fluid leakage in expander is serious and is the main factor affecting the expander's efficiency.This paper presented and compared four classic leakage models.The analysis indicated that laminar leakage model is suitable in leakage simulation of expander.A leakage test system,including the leakage test part which has two types of leakage specimens with different gaps ranging from 5 to 15 m,was established.The experimental results indicated that lubricant film played an important role.When the leakage clearance of cylindrical specimen was 5 m,the mass flow rate of leakage was about 0.88 g s-1.The data was 3.638 g s-1 with leakage clearance being 10 m and 7.11g s-1 with leakage clearance being 15 m.A modified leakage model was developed,whose average deviation was within 10% compared with the experimental data.At last,this paper simulated the leakage in rolling piston expander presented by Tian et al.(2010).The leakage between rolling piston and cylinder was the most serious part with the value up to 0.04 kg s-1. | TIAN Hua MA YiTai LI MinXia LIU ShengChun WANG KaiYang | 2012 | Science China(Technological Sciences)2012,55,6: | 3 |
| 12 | Research and application of CO_2 refrigeration and heat pump cycle显示文摘The environmental problem caused by refrigerant has become the focus all over the world.As the most typical natural refrigerant,CO2,of course,becomes the research focus.This paper introduces the development and application status of CO2 refrigeration and heat pump technology.The researches on CO2 refrigeration and heat pump,carried out by Thermal Energy Research Institute,Tianjin University,also are presented in this paper. | TIAN Hua,YANG Zhao,LI MinXia & MA YiTai Thermal Energy Research Institute,Tianjin University,Tianjin 300072,China | 2009 | Science China(Technological Sciences)2009,52,6: | 3 |
| 13 | Woody species Rhus chinensis Mill. seedlings tolerance to Pb:Physiological and biochemical response显示文摘Screening potential plant species is a crucial consideration in phytoremediation technology.Our previous study demonstrated that Rhus chinensis Mill. seedlings had potentials for phytoremediation of Pb contaminated soil. However, its bioaccumulation and tolerance characteristics remain unclear. Seedling growth, LMWOAs secreted by roots, Pb subcellular distribution and chemical forms, and mineral elements in R. chinensis tissues were evaluated under different Pb concentrations(0, 25, 50, 100, 200 and 400 mg/L) in culture solution at14 days after planting. R. chinensis did not show visual symptoms of Pb toxicity under lower Pb treatments; however, Pb significantly declined the growth of seedlings under higher Pb treatments. Higher Pb stress also decreased the concentrations of nitrogen in leaves, but increased the concentrations of P and K in roots. Pb stress also decreased Mn concentrations in leaves. A great quantity of Pb was uptake and mostly retained in R. chinensis roots.Nonetheless, R. chinensis can still concentrate 459.3 and 1102.7 mg/kg Pb in leaves and stems,respectively. Most of Pb in R. chinensis tissues was stored in the cell wall with HAc-, HCl-, and NaC l-extractable form. LMWOAs secreted by R. chinensis roots showed a strong positive correlation with Pb concentrations in all plant tissues and with P in roots. Our results suggested that Pb deposited in the cell wall and integration with phosphate or oxalate might be responsible for the tolerance of R. chinensis under Pb stress in short period. | Xiang Shi Shufeng Wang Dongxue Wang Haijing Sun Yitai Chen Jianfeng Liu Zeping Jiang | 2019 | Journal of Environmental Sciences2019,31,4: | 3 |
| 14 | 2D interspace confined growth of ultrathin MoS_(2)-intercalated graphite hetero-layers for high-rate Li/K storage显示文摘Herein,a two-dimensional(2D)interspace-confined synthetic strategy is developed for producing MoS_(2)intercalated graphite(G-MoS_(2))hetero-layers composite through sulfuring the pre-synthesized stage-1 MoCI5-graphite intercalation compound(M0 CI5-GIC).The in situ grown MoS_(2)nanosheets(3-7 layers)are evenly encapsulated in graphite layers with intimate interface thus forming layer-by-layer MoS_(2)-intercalated graphite composite.In this structure,the unique merits of MoS_(2)and graphite components are integrated,such as high capacity contribution of MoS_(2)and the flexibility of graphite layers.Besides,the tight interfacial interaction between hetero-layers optimizes the potential of conductive graphite layers as matrix for MoS_(2).As a result,the G-MoS_(2)exhibits a high reversible Li+storage of 344 mAh·g^(-1)even at 10 A·g^(-1)and a capacity of 539.9 mAh·g^(-1)after 1,500 cycles at 5 A·g^(-1).As for potassium ion battery,G-MoS_(2)delivers a reversible capacity of 377.0 mAh·g^(-1)at 0.1 A·g^(-1)and 141.2 mAh·g^(-1)even at 2 A·g^(-1).Detailed experiments and density functional theory calculation demonstrate the existence of hetero-layers enhances the diffusion rates of Li^(+)and K^(+).This graphite interspace-confined synthetic methodology would provide new ideas for preparing function-integrated materials in energy storage and conversion,catalysis or other fields. | Yang Li Song Jiang Yong Qian Xuedong Yan Jie Zhou Zheng Yi Ning Lin Yitai Qian | 2021 | Nano Research2021,14,4: | 3 |
| 15 | Molten-LiCl induced thermochemical prelithiation of SiOx:Regulating the active Si/O ratio for high initial Coulombic efficiency显示文摘The low initial Coulombic efficiency(ICE)of SiOx anode caused by the irreversible generation of LiySiOz and Li20 during lithiation process limits its application for high energy-density lithium-ion batteries.Herein,we report a molten-salt-induced thermochemical.prelithiation strategy for regulating the electrochemically active Si/O ratio of SiOx and thus enhancing ICE through thermal treatment of pre-synthesized LiNH2-coated SiOx in molten LiCl at 700℃.Bulk SiOx micro-particle was transformed into pomegranatelike prelithiated micro-cluster composite(M-Li-SiOx)with SiOx core and outer nano-sized agglomerates consisting of Li2Si20s,SiO2,and Si.Through the analysis of the reaction intermediates,molten-UC!could initiate reactions and promote mass transfer by the continuous extraction of oxygen component from SiOx particle inner in the form of inert Li2Si20s and SiO2 nanotubes to realize the.prelithiation.The degree of prelithiation can be regulated by adjusting the coating amount of LiNH2 layer,and the resulted M-Li-SiOx displays a prominent improvement of ICE from 58.73%to 88.2%.The graphite/M-Li-SiOx(8:2)composite electrode delivers a.discharge capacity of 497.29 mAh·g^(-1) with an ICE of 91.79%.By pairing graphite/M-Li-SiOx anode and LiFeP04 cathode in a full-cell an enhancement of energy density of 37.25%is realized compared with the full-cell containing graphite/SiOx anode.Furthermore,,ex-situ X-ray photoelectron spectroscopy(XPS)/Raman/X-ray diffraction(XRD)and related electrochemical measurements reveal the SiOx core and Si of M-Li-SiOx participate in the lithiation,and pre-generated Li2Si20s with u+diffusivity and pomegranate-like.structure reduces the reaction resistance and interface impedance of the solid electrolyte interphase(SEI)film. | Yang Li Yong Qian Jie Zhou Ning Lin Yitai Qian | 2022 | Nano Research2022,15,1: | 2 |
| 16 | Dandelion-Like Bi_(2)S_(3)/rGO hierarchical microspheres as high-performance anodes for potassium-ion and half/full sodium-ion batteries显示文摘Sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) have been considered as attractive alternatives for next-generation battery systems, which have promising application potential due to their earth abundance of potassium and sodium, high capacity and suitable working potential, however, the design and application of bi-functional high-performance anode still remain a great challenge up to date. Bismuth sulfide is suitable as anode owing to its unique laminar structure with relatively large interlayer distance to accommodate larger radius ions, high theoretical capacity and high volumetric capacity etc. In this study, dandelion-like Bi_(2)S_(3)/rGO hierarchical microspheres as anode material for PIBs displayed reversible capacity, and 206.91 mAh·g^(−1) could be remained after 1,200 cycles at a current density of 100 mA·g^(−1). When applied as anode materials for SIBs, 300 mAh·g^(−1) could be retained after 300 cycles at 2 A·g^(−1) and its initial Coulombic efficiency is as high as 97.43%. Even at high current density of 10 A·g^(−1), 120.3 mAh·g^(−1) could be preserved after 3,400 cycles. The Na_(3)V_(2)(PO_(4))_(3)@rGO//Bi_(2)S_(3)/rGO sodium ion full cells were successfully assembled which displays stable performance after 60 cycles at 100 mA·g^(−1). The above results demonstrate that Bi2S3/rGO has application potential as high performance bi-functional anode for PIBs and SIBs. | Xiuping Sun Lu Wang Chuanchuan Li Debao Wang Iqbal Sikandar Ruxia Man Fang Tian Yitai Qian Liqiang Xu | 2021 | Nano Research2021,14,12: | 2 |
| 17 | Hierarchical flower-like cobalt phosphosulfide derived from Prussian blue analogue as an efficient polysulfides adsorbent for long-life lithium-sulfur batteries显示文摘Lithium-sulfur (Li-S) battery as one of the most attractive candidates for energy storage systems has attracted extensive interests.Herein,for the first time,hierarchical flower-like cobalt phosphosulfide architectures (defined as 'CoSP') derived from Prussian blue analogue (PBA) was fabricated through the conversion of Co-based PBA in PxSy atmosphere.The as-prepared polar CoSP could effectively trap polysulfides through the formation of strong chemical bonds.In addition,after the combination of CoSP with high conductive rGO,the obtained CoSP/rGO as sulfur host material exhibits ultralow capacity decay rate of 0.046% per cycle over 900 cycles at a current density of 1 C.The excellent performance could be attributed to the shortened lithium diffusion pathways,fastened electron transport ability during polysulfide conversion,and increased much more anchor active sites to polysulfides,which is expected to be a promising material for Li-S batteries.It is believed that the as-prepared CoSP/rGO architectures will shed light on the development of novel promising materials for Li-S batteries with high cycle stability. | Xiaoxia Chen Xuyang Ding Haliya Muheiyati Zhenyu Feng Liqiang Xu Weini Ge Yitai Qian | 2019 | Nano Research2019,12,5: | 2 |
| 18 | Minimum Bedrock Exposure Ages and Their Implications:Larsemann Hills and Neighboring Bolingen Islands,East Antarctica显示文摘可观的争吵在广泛的冻结成冰是否在 Larsemann 山发生在全球上次冰川的最大值(LGM ) 期间上存在。在这研究,我们使用在里面 situ 生产了 cosmogenic 核种 10Be (半生活 1.51 妈) 提供最小的暴露年龄让六件基岩样品和一块乖僻的大石头以便在 Larsemann 山并且在附近的 Bolingen 岛上决定冰川的消失的最后时期。从友谊山拿的三件基岩样品(镜子半岛上的最高的山峰, Larsemann 山;从冰表的 2 km ) 有最小的暴露年龄从 40.0 ~ 44.7 ka 。从山峰 106 的乖僻的大石头(就在冰表的边) 有仅仅 8.8 ka 的更年轻的最小的暴露年龄。为从 Blundell 的二件基岩样品的最小的暴露年龄达到顶点(Stornes 半岛上的最高的山峰, Larsemann 山;从冰表的 2 km ) 是大约 17 和 18 ka。在 Bolingen 岛上(西南到 Larsemann 山;从冰表的 10 km ) ,为一件基岩样品的最小的暴露年龄在友谊山类似于那(即, 44 ka ) 。我们的结果显示在 Larsemann 山并且在附近的 Bolingen 岛上的基岩暴露在全球 LGM 前显然开始了(即, 2022 ka ) ,并且在南极海岸区域的基岩侵蚀率可能显然比在内部陆地高。 | HUANG Feixin LI Guangwei LIU Xiaohan KONG Ping JU Yitai David FINK FANG Aimin YU Liangjun | 2010 | Acta Geologica Sinica(English Edition)2010,84,3: | 2 |
| 19 | Graphene-wrapped Fe_2O_3 nanorings for Li ion battery anodes显示文摘Graphene-wrapped Fe2O3nanorings(RGO/Fe2O3)were synthesized by a facile approach,which assembled with graphene and the Fe2O3nanorings precursor through the colloidal coagulation effect at room temperature.The uniform Fe2O3nanorings prepared by hydrothermal routes were homogeneously distributed and well wrapped by graphene.When tested as anode for lithium ion batteries,RGO/Fe2O3exhibits a high capacity and good cycling stability.This could be attributed to the interaction of ring-shaped structure and graphene sheets,which inherit the good kinetic property of Fe2O3nanorings and enhance the structural integrity with graphene sheets’support. | Lili Wang Qiushi Chen Yongchun Zhu Yitai Qian | 2014 | Chinese Science Bulletin2014,59,32: | 2 |
| 20 | Cu_(3)P nanoparticles confined in nitrogen/phosphorus dual-doped porous carbon nanosheets for efficient potassium storage显示文摘Immobilizing primary electroactive nanomaterials in porous carbon matrix is an effective approach for boosting the electrochemical performance of potassium-ion batteries (PIBs) because of the synergy among functional components. Herein, an integrated hybrid architecture composed of ultrathin Cu_(3)P nanoparticles (~20 nm) confined in porous carbon nanosheets (Cu_(3)P⊂NPCSs) as a new anode material for PIBs is synthesized through a rational self-designed self-templating strategy. Benefiting from the unique structural advantages including more active heterointerfacial sites, intimate and stable electrical contact, effectively relieved volume change, and rapid K^(+) ion migration, the Cu_(3)P⊂NPCSs indicate excellent potassium-storage performance involving high reversible capacity, exceptional rate capability, and cycling stability. Moreover, the strong adsorption of K^(+) ions and fast potassium-ion reaction kinetics in Cu_(3)P⊂NPCSs is verified by the theoretical calculation investigation. Noted, the intercalation mechanism of Cu_(3)P to store potassium ions is, for the first time, clearly confirmed during the electrochemical process by a series of advanced characterization techniques. | Yuanxing Yun Baojuan Xi Yu Gu Fang Tian Weihua Chen Jinkui Feng Yitai Qian Shenglin Xiong | 2022 | Journal of Energy Chemistry2022,31,3: | 2 |