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3篇 您的检索式:作者名="Meiqin Zeng"
    题名 作者 年代 出处 被引量
1Progress 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 2012Chinese Science Bulletin2012,57,32:8
2High-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 2009Electrochemistry Communications2009,,11:1
3Dispersing 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 2014Journal of Energy Chemistry2014,23,3:0
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