二氧化锰纳米材料在锂离子电池负极材料中的应用  

Applications of MnO_2 nanomaterials as an anode for lithiumion batteries

作　　者：顾鑫[1] 徐化云[1] 杨剑[1] 钱逸泰[1,2] 

机构地区：[1]山东大学化学与化工学院,济南250100 [2]中国科学技术大学化学系,合肥230026

出　　处：《科学通报》2013年第31期3108-3114,共7页Chinese Science Bulletin

基　　金：国家重点基础研究发展计划(2011CB935901);国家自然科学基金重点项目(91022033),国家自然科学基金(51172076,21203111);山东省自然科学杰出青年基金(JQ201205);山东大学自主创新基金(2012ZD007)资助

摘　　要：锂离子电池作为清洁、高效、便携的储能方式之一,在很多领域都具有广阔的应用前景.如何实现高容量、大功率和长寿命的锂离子电池,依赖于其中各核心部件的结构设计和性能提升.MnO2由于其较高的理论比容量、较低的放电平台、价格低廉和环境友好等优点,在锂离子电池负极材料的应用上具有很大的潜力.针对MnO2作为负极材料可能存在的问题,可以通过纳米化、孔洞化和增强导电性等多种策略,改变电极材料的结构和成分以适应充放电过程,实现锂电性能的不断改善和提高.本文总结了近年来基于MnO2纳米材料的锂离子电池负极材料的研究成果,并对其未来的研究方向进行了展望.Lithium-ion batteries as one of clean, portable and high-efficiency energy-storage devices, have exhibited promising potentials in many fields. MnO2 as an anode of lithium-ion batteries shows a lot of advantages, such as a high theoretical capacity, a low electrochemical motivation force, a high abundance, as well as a low contamination to environment. But MnO2 also faces to a couple of challenges, including a poor electronic conductivity and a severe volume change during the discharge/charge processes. In order to address these issues, several strategies have been applied to control the shape, size, structure and surface modification of MnO2 for the improved performances in lithium-ion batteries. The related studies have been summarized and discussed in this mini-review. Finally, there are still many ambiguous scenes for MnO2 as an anode, which deserves the future efforts on this topic.

关 键 词：锂离子电池 负极材料 二氧化锰 纳米结构 

分 类 号：TM912[电气工程—电力电子与电力传动]