|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Progress on Sn-based thin-film anode materials for lithium-ion batteries显示文摘Thin-film lithium-ion batteries are the most competitive power sources for various kinds of micro-electro-mechanical systems and have been extensively researched.The present paper reviews the recent progress on Sn-based thin-film anode materials,with particular emphasis on the preparation and performances of pure Sn,Sn-based alloy,and Sn-based oxide thin films.From this survey,several conclusions can be drawn concerning the properties of Sn-based thin-film anodes.Pure Sn thin films deliver high reversible capacity but very poor cyclability due to the huge volume changes that accompany lithium insertion/extraction.The cycle performance of Sn-based intermetallic thin films can be enhanced at the expense of their capacities by alloying with inactive transition metals.In contrast to anodes in which Sn is alloyed with inactive transition metals,Sn-based nanocomposite films deliver high capacity with enhanced cycle performance through the incorporation of active elements.In comparison with pure Sn anodes,Sn-based oxide thin films show greatly enhanced cyclability due to the in situ formation of Sn nanodispersoids in an Li2O matrix,although there is quite a large initial irreversible capacity loss.For all of these anodes,substantial improvements have been achieved by micro-nanostructure tuning of the active materials.Based on the progress that has already been made on the relationship between the properties and microstructures of Sn-based thin-film anodes,it is believed that manipulating the multi-phase and multi-scale structures offers an important means of further improving the capacity and cyclability of Sn-based alloy thin-film anodes. | HU RenZong LIU Hui ZENG MeiQin LIU JiangWen ZHU Min | 2012 | Chinese Science Bulletin2012，57，32： | 8 |
| 2 | Fluorine-substituted O3-type NaNi_(0.4)Mn_(0.25)Ti_(0.3)Co_(0.05)O_(2-x)F_(x) cathode with improved rate capability and cyclic stability for sodium-ion storage at high voltage显示文摘O3-type Na NiO_(2)-based cathode materials undergo irreversible phase transition and serious capacity decay at high voltage above 4.0 V in sodium-ion batteries. To address these challenges, effects of Fsubstitution on the structure and electrochemical performance of Na Ni_(0.4)Mn_(0.25)Ti_(0.3)Co_(0.05)O_(2) are investigated in this article. The F-substitution leads to expanding of interlayer, which can enhance the mobility of Na+. NaNi_(0.4)Mn_(0.25)Ti_(0.3)Co_(0.05)O_(1.92)F_(0.08)(NMTC-F_(0.08)) with the optimal F-substitution degree exhibits much improved rate capability and cyclic stability. It delivers reversible capacities of 177 and 97 m Ah g^(-1) at 0.05 and 5 C within 2.0–4.4 V, respectively. Galvanostatic intermittent titration technique verifies faster kinetics of Na+diffusion in NMTC-F_(0.08). And in-situ XRD investigation reveals the phase evolution of NMTC-F_(0.08), indicating enhanced structural stability results from F-substitution. This study may shed light on the development of high performance cathode materials for sodium-ion storage at high voltage. | Chaojin Zhou Lichun Yang Chaogang Zhou Jiangwen Liu Renzong Hu Jun Liu Min Zhu | 2021 | Journal of Energy Chemistry2021，30，9： | 3 |
| 3 | Partial Atomic Tin Nanocomplex Pillared Few-Layered Ti_(3)C_(2)Tx MXenes for Superior Lithium-Ion Storage显示文摘MXenes have attracted great interest in various fields,and pillared MXenes open a new path with larger interlayer spacing.However,the further study of pillared MXenes is blocked at multilayered state due to serious restacking phenomenon of few-layered MXene nanosheets.In this work,for the first time,we designed a facile NH4+method to fundamentally solve the restacking issues of MXene nanosheets and succeeded in achieving pillared few-layered MXene.Sn nanocomplex pillared few-layered Ti3C2Tx(STCT)composites were synthesized by introducing atomic Sn nanocomplex into interlayer of pillared few-layered Ti3C2Tx MXenes via pillaring technique.The MXene matrix can inhibit Sn nanocomplex particles agglomeration and serve as conductive network.Meanwhile,the Sn nanocomplex particles can further open the interlayer spacing of Ti3C2Tx during lithiation/delithiation processes and therefore generate extra capacity.Benefiting from the“pillar effect,”the STCT composites can maintain 1016 mAh g^?1 after 1200 cycles at 2000 mA g^?1 and deliver a stable capacity of 680 mAh g^?1 at 5 A g^?1,showing one of the best performances among MXene-based composites.This work will provide a new way for the development of pillared MXenes and their energy storage due to significant breakthrough from multilayered state to few-layered one. | Shunlong Zhang Hangjun Ying Bin Yuan Renzong Hu Wei-Qiang Han | 2020 | Nano-Micro Letters2020，12，6： | 3 |
| 4 | Plasma assisted synthesis of LiNi_(0.6)Co_(0.2)Mn_(0.2)O_(2) cathode materials with good cyclic stability at subzero temperatures显示文摘Layered Ni-rich cathode materials,LiNi_(0.6)Co_(0.2)Mn_(0.2)O_(2)(NCM622),are synthesized via solid reaction assisted with a plasma milling pretreatment,which is resulted in lowering sintering temperatures for solid precursors.The plasma milling pretreated NCM622 cathode material sintered at 780℃(named as PM-780)demonstrates good cycling stability at both room and subzero temperatures.Specifically,the PM-780 cathode delivers an initial discharge capacity of 171.2 mAh g^(-1) and a high capacity retention of 99.7%after 300 cycles with current rate of 90 mA g^(-1) at 30℃,while stable capacities of 120.3 and 94.0 m Ah g^(-1) can be remained at-10℃and-20℃in propylene carbonate contained electrolyte,respectively.In-situ XRD together with XPS and SEM reveal that the NCM622 cycled at-10℃presented better structural stability and more intact interface than that of cathodes cycled at 30℃.It is also found that subzero temperatures only limit the discharge potential of NCM622 without destroying its structure during cycling since it still exhibits high discharge capacity at 30℃after cycled at subzero temperatures.This work may expand the knowledge about the low-temperature characteristics of layered cathode materials for Li-ion batteries and lay the foundation for its further applications. | Fanbo Meng Renzong Hu Zhiwei Chen Liang Tan Xuexia Lan Bin Yuan | 2021 | Journal of Energy Chemistry2021，30，5： | 2 |
| 5 | Mapping of Freshwater Lake Wetlands Using Object-Relations and Rule-based Inference显示文摘Inland freshwater lake wetlands play an important role in regional ecological balance.Hongze Lake is the fourth biggest freshwater lake in China.In the past three decades,there has been significant loss of freshwater wetlands within the lake and at the mouths of neighboring rivers,due to disturbance,primarily from human activities.The main purpose of this paper was to explore a practical technology for differentiating wetlands effectively from upland types in close proximity to them.In the paper,an integrated method,which combined per-pixel and per-field classification,was used for mapping wetlands of Hongze Lake and their neighboring upland types.Firstly,Landsat ETM+ imagery was segmented and classified by using spectral and textural features.Secondly,ETM+ spectral bands,textural features derived from ETM+ Pan imagery,relative relations between neighboring classes,shape features,and elevation were used in a decision tree classification.Thirdly,per-pixel classification results from the decision tree classifier were improved by using classification results from object-oriented classification as a context.The results show that the technology has not only overcome the salt-and-pepper effect commonly observed in the past studies,but also has improved the accuracy of identification by nearly 5%. | RUAN Renzong Susan USTIN | 2012 | Chinese Geographical Science2012，22，4： | 1 |
| 6 | Philosophy of medicine in China (1930–1980)显示文摘 | Qiu Renzong | 1982 | Metamedicine1982，，1： | 1 |
| 7 | High-capacity LiV 3 O 8 thin-film cathode with a mixed amorphous–nanocrystalline microstructure prepared by RF magnetron sputtering显示文摘 | Qian Shi Renzong Hu Liuzhang Ouyang Meiqin Zeng Min Zhu | 2009 | Electrochemistry Communications2009，，11： | 1 |
| 8 | Sn buffered by shape memory effect of NiTi alloys as high-performance anodes for lithium ion batteries显示文摘 | Renzong Hu Min Zhu Hui Wang Jiangwen Liu Ouyang Liuzhang Jin Zou | 2012 | Acta Materialia2012，，12： | 1 |
| 9 | Bioethics: Perspectives from China 显示文摘 | Qiu Renzong | 2014 | Asian Bioethics Review2014，6，2： | 1 |
| 10 | Reducing voltage hysteresis of metal oxide anodes to achieve high energy efficiency for Li-ion batteries显示文摘In the past two decades,a lot of high-capacity conversion-type metal oxides have been intensively studied as alternative anode materials for Li-ion batteries with higher energy density.Unfortunately,their large voltage hysteresis(0.8-1.2 V) within reversed conversion reactions results in huge round-trip inefficiencies and thus lower energy efficiency(50%-75%) in full cells than those with graphite anodes.This remains a long-term open question and has been the most serious drawback toward application of metal oxide anodes.Here we clarify the origins of voltage hysteresis in the typical SnO2anode and propose a universal strategy to minimize it.With the established in situ phosphating to generate metal phosphates during reversed conversion reactions in synergy with boosted reaction kinetics by the added P and Mo,the huge voltage hysteresis of 0.9 V in SnO_(2),SnO_(2)-Mo,and 0.6 V in SnO2-P anodes is minimized to 0.3 V in a ternary SnO_(2)-Mo-P(SOMP) composite,along with stable high capacity of 936 mA h g^(-1)after 800 cycles.The small voltage hysteresis can remain stable even the SOMP anode operated at high current rate of10 A g^(-1)and wide-range temperatures from 60 to 30℃,resulting in a high energy efficiency of88.5% in full cells.This effective strategy to minimize voltage hysteresis has also been demonstrated in Fe2O3,Co3O4-basded conversion-type anodes.This work provides important guidance to advance the high-capacity metal oxide anodes from laboratory to industrialization. | Xuexia Lan Xingyu Xiong Jie Cui Renzong Hu | 2023 | Journal of Energy Chemistry2023，，8： | 0 |
| 11 | SiO-Sn_(2)Fe@C composites with uniformly distributed Sn_(2)Fe nanoparticles as fast-charging anodes for lithium-ion batteries显示文摘SiO-based materials represent a promising class of anodes for lithium-ion batteries(LIBs),with a high theoretical capacity and appropriate and safe Li-insertion potential.However,SiO experiences a large volume change during the electrochemical reaction,low Li diffusivity,and low electron conductivity,resulting in degradation and low rate capability for LIBs.Here,we report on the rapid crafting of SiO–Sn_(2)Fe@C composites via a one-step plasma milling process,leading to an alloy of Sn and Fe and in turn refining SiO and Sn_(2)Fe into nanoparticles that are well dispersed in a nanosized,few-layer graphene matrix.The Sn and Fe nanoparticles generated during the first Li-insertion process form a stable network to improve Li diffusivity and electron conductivity.As an anode mate-rial,the SiO–Sn_(2)Fe@C composite manifests high reversible capacities,superior cycling stability,and excellent rate capability.The capacity retention is found to be as high as 95%and 84%at the 100th and 300th cycles under 0.3 C.During rate capability testing at 3,6,and 11 C,the capacity retentions are 71%,60%,and 50%,respectively.This study highlights that this simple,one-step plasma milling strategy can further improve SiO-based anode materials for high-performance LIBs. | Hanyin Zhang Renzong Hu Sirui Feng Zhiqun Lin Min Zhu | 2023 | eScience2023，3，1： | 0 |
| 12 | Sn Alloy and Graphite Addition to Enhance Initial Coulombic Efficiency and Cycling Stability of SiO Anodes for Li-Ion Batteries显示文摘Silicon monoxide(SiO)has aroused increased attention as one of the most promising anodes for high-energy density Li-ion batteries.To enhance the initial Coulombic efficiencies(ICE)and cycle stability of SiO-based anodes,a new facile composition and electrode design strategy have been adapted to fabricate a SiO-Sn-Co/graphite(G)anode.It achieves a unique structure where tiny milled SiO-Sn-Co particles are dispersed among two graphite layers.In this hybrid electrode,Sn-Co alloys promoted Li;extraction kinetics,and the holistic reversibility of SiO and graphite enhanced the electrical conductivity.The SiO-Sn-Co/G electrode delivered an average ICE of 77.6%and a reversible capacity of 640 mAh g^(-1)at 800 mA g^(-1),and the capacity retention was above 98%after 100 cycles,which was much higher than that of the SiO with an ICE of 55.3%and a capacity retention of 50%.These results indicated that this was reliable method to improve the reversibility and cycle ability of the SiO anode.Furthermore,based on its easy and feasible fabrication process,it may provide a suitable choice to combine other alloy anodes with the graphite anode. | Xingyang Du Hanying Zhang Xuexia Lan Bin Yuan Renzong Hu | 2022 | Energy & Environmental Materials2022，5，1： | 0 |
| 13 | Synthesis of amorphous SeP_(2)/C composite by plasma assisted ball milling for high-performance anode materials of lithium and sodium-ion batteries显示文摘To promote substantially the performances of red phosphorous(P)anode for lithium and sodium-ion batteries,a simple plasma assisted milling(P-milling)method was used to in-situ synthesize SeP_(2)/C composite.The results showed that the amorphous SeP_(2)/C composite exhibits the excellent lithium and sodium storage performances duo to the small nano-granules size and complete combination of selenium(Se)and phosphorous(P)to generate Se–P alloy phase.It was observed that inside the granules of SeP_(2)/C composite the nanometer size of the Se P_(2) particles ensured the fast kinetics for Li+and Na+transfer,and the amorphous carbon wrapping the Se P_(2) particles relieved volume expansion during lithium/sodium storage processes and enhances electric conductivity.Therefore,the SeP_(2)/C electrode retained reversible capacities of 700 m A h g^(-1) at 2 A g^(-1) after 500 cycles and 400 m A h g^(-1)at 0.5 A g^(-1) after 400 cycles as anode for LIBs and SIBs,respectively.The result proves that the amorphous SeP_(2)/C composite can be a new type of anode material with great potential for lithium and sodium-ion batteries. | Cheng Lin Liuzhang Ouyang Renzong Hu Jun Liu Lichun Yang Huaiyu Shao Min Zhu | 2021 | Progress in Natural Science:Materials International2021，31，4： | 0 |
| 14 | Dispersing SnO_2 nanocrystals in amorphous carbon as a cyclic durable anode material for lithium ion batteries显示文摘We demonstrate a facile route for the massive production of SnCb/carbon nanocomposite used as high-capacity anode materials of nextgeneration lithium-ion batteries.The nanocomposite had a unique structure of ultrafine SnO_2 nanocrystals(~5 nm,80 wt%) homogeneously dispersed in amorphous carbon matrix.This structure design can well accommodate the volume change of Li^+ insertion/desertion in SnO_2,and prevent the aggregation of the nanosized active materials during cycling,leading to superior cycle performance with stable reversible capacity of 400 mAh/g at a high current rate of 3.3 A/g. | Renzong Hu Wei Sun Meiqin Zeng Min Zhu | 2014 | Journal of Energy Chemistry2014，23，3： | 0 |
| 15 | Understanding the Reversible Reactions of Li-N_(2) Battery Catalyzed With SnO_(2)显示文摘Metal–N_(2) battery can be applied in both energy storage and electrochemical nitrogen reduction reaction(NRR);however,there has been only extraordinarily little study on metal–N_(2) battery since its electrochemical reversibility still needs further proofs.And its electrochemical performances also need to be enhanced.Herein,we investigated the discharge–charge reactions between Li anode and N_(2) cathode via designing an efficient catalyst of nanosized SnO_(2) particles dispersed on N-doped carbon nanosheets(SnO 2@NC)for the Li-N_(2) battery,with good cyclic stability and a high specific capacity of 0.25 mA h(~500 mA h g^(−1))at a large current density of 1000 mA g^(−1).The electrochemical reversibility of both NRR in the discharge process and nitrogen extraction reaction in the charge process for Li-N 2 battery is discussed.Time-of-flight secondary ion mass spectrometry results imply that the SnO_(2)@NC can effectively promote the adsorption of N_(2) and the activation of NRR in the discharge process.Furthermore,ex situ X-ray photoelectron spectroscopy and Fourier transform infrared tests are performed to study the electrochemical reversibility of Li-N_(2) battery.It can be proved that the formation and decomposition of discharging product Li_(3)N are electrochemical reversible during cycling in our deigned Li-N_(2) battery system with SnO_(2)@NC catalyst. | Fanbo Meng Jiayao Qin Xingyu Xiong Xiangjie Li Renzong Hu | 2023 | Energy & Environmental Materials2023，6，1： | 0 |
| 16 | Understanding the phenomenon of capacity increasing along cycles: In the case of an ultralong-life and high-rate SnSe-Mo-C anode for lithium storage显示文摘A good cycling stability is a prerequisite for the application of metal-based materials in lithium-ion batteries(LIBs). However, an abnormal increase in capacity is often observed, which has rarely been focused on in many studies. In our SnSe-Mo-C composite anode, a high reversible capacity of 737.4 mAh g^(-1)remained after 5000 cycles at 5 A g^(-1)between 0.01 and 3.0 V versus Li/Li+. However, a continuous capacity increase occurred in the initial cycles, with 1086.9 mAh g^(-1)after 1000 cycles and 1216.9 mAh g^(-1)after 1500 cycles, respectively. Further studies revealed that the electrolyte decomposed at high potentials(2.5–3.0 V) and provided additional capacities. The cut-off voltage and electrolyte filling were controlled, which eliminated the impact of electrolyte decomposition, prevented rapid capacity decay, and provided a stable cycling performance for SnSe-Mo-C anodes in LIBs. This work shows that the composite anode is promising for lithium storage and the findings provide new insights into understanding and controlling the phenomenon of capacity increase with cycling in metal-based anode materials. | Xin Wu Xingyu Xiong Bin Yuan Jun Liu Renzong Hu | 2022 | Journal of Energy Chemistry2022，31，9： | 0 |
| 17 | Construction of SnS-Mo-graphene nanosheets composite for highly reversible and stable lithium/sodium storage显示文摘Sn-based chalcogenides are considered as one of the most promising anode materials for lithium-ion batteries(LIBs)because of their high capacities through both conversion and alloying reactions.However,the realization of full capacities of Sn-based chalcogenides is mainly hindered by the large volume variation and inferior reversibility of conversion reaction during cycling.In present work,a new ternary Sn SMo-graphene nanosheets(Sn S-Mo-GNs)composite is fabricated by a simple and scalable plasma milling method,in which Sn S nanoparticles are tightly bonded with Mo and GNs.The Mo and GNs additives can effectively alleviate the large volume change of Sn S upon cycling,which leads to a stable electrochemical framework.Moreover,they can significantly suppress the Sn agglomeration in lithiated Sn S,which enables highly reversible conversion reaction during cycling.As anode for LIBs,the Sn S-Mo-GNs composite exhibits a high initial coulombic efficiency of 86.9%(almost complete reversibility of Sn S,~97.3%),high cyclic coulombic efficiency after initial three cycles(>99.5%),and long lifespan(up to 600 cycles).Moreover,it also demonstrates superior electrochemical performance for sodium storage.Thus,this work demonstrates a potential anode for batteries application and provides a viable strategy to obtain highly reversible and stable anodes for lithium/sodium storage. | Deliang Cheng Lichun Yang Renzong Hu Jie Cui Jiangwen Liu Min Zhu | 2022 | Journal of Materials Science & Technology2022，，26： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员