【摘要】 本文详细综述了近年来国内外关于锂离子电池三钒酸盐嵌锂电极材料的研究进展,重点对钒酸锂、钒酸钠和钒酸铵材料的晶体结构、充放电机制、合成及电化学性能研究等进行了介绍,并结合我们课题组的研究情况,对比分析了上述三种材料的优劣。钒酸锂是目前研究的热点,近年来随着新型制备工艺的引入以及包括掺杂包覆改性手段的应用,材料的循环性能得到明显改善,但是相对较差的结构属性限制了其进一步的研究与应用;钒酸钠有较稳定的层状结构,体现了优秀的循环稳定性能和倍率性能,在高功率长寿命有机电解液锂电池正极材料以及水溶液锂电池负极材料的应用中有广阔的前景;相比于钒酸锂,钒酸铵材料具有合成方法更简单、比容量相当、循环性能更优越的特点,分子内氢键的存在使得层状结构更加稳定,该材料有望成为钒系材料中新的研究热点。更多还原

【Abstract】 Research progress of MV3O8(M=Li+,Na+,NH4+) as lithium intercalated materials for lithium ion batteries in recent years are reviewed,especially with emphasis on their crystal structures,charge-discharge mechanisms,synthesis methods and electrochemical properties.The advantage and disadvantage of the involved three kinds of vanadium-related materials are well compared on the basis of our group’s research.Till now,LiV3O8 has been widely studied and large progress has been made via employing the novel preparation strategies,effective doping or modification methods.However,the intrinsic inferior structure has become a big challenge for its further study and applications.Due to the relatively stable layered structure,NaV3O8 has good cycling stability and excellent rate capability,thus it exhibits a great potential to be used as a high-power and long-cycling life cathode material for non-aqueous lithium ion battery,as well as high performance anode material for aqueous lithium ion battery.In comparison with LiV3O8,NH4V3O8 shows comparable capacity,much easier preparation and better cycling stability probably due to its formation of intra molecular H-bond.It is believed that NH4V3O8 could become a new research topic in vanadates as intercalated materials for lithium ion batteries.更多还原