文章基本信息

标题：In situ interfacial architecture of lithium vanadate-based cathode for printable lithium batteries
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作者：Zhuangzhuang Wang ; Wenwei Sun ; Dejian Tang 等
期刊名称：iScience
印刷版ISSN：2589-0042
出版年度：2021
卷号：24
期号：6
页码：1-11
DOI：10.1016/j.isci.2021.102666
语种：English
出版社：Elsevier
摘要：SummaryMost Li3VO4anodes are obtained by pre-architecture methods in which Li3VO4anode materials are prepared with more than six key processes including high-temperature annealing and long preparation time. Herein, we propose anin situpost-architecture strategy including Li3VO4-precursor solution (ink) preparation and then annealing at 250°C. The integrated Li3VO4based electrode not only possesses good electrical conductivity and porous microstructure but also has superior stability because of Cu anchoring and inclusion byin situcatalysis. The integrated electrode demonstrates a high reversible capacity (865 mA h g−1at 0.2 A g−1) and good cyclability (100% capacity retention after 200 cycles at 1 A g−1). More importantly, the post-architecture electrode has a high energy density of 773.8 Wh kg−1, much higher than reported Li3VO4-based materials, as well as most cathodes. Therefore, the electrode could be used to the printable cathode of low-voltage high-energy-density lithium batteries.Graphical abstractDisplay OmittedHighlights•Post-architecture route is proposed toin situobtain L3VO4-based electrodes in air•The preparation time is shortened to less than 4 hr from 48 to 72 hr•The electrode has a superior reversible capacity of 865.4 mA h g−1•The printable cathode has an energy density of 774 Wh kg−1for low-voltage Li cellsElectrochemical energy storage; Engineering; Materials science; Materials chemistry