稀土改性电化学储能电极材料的研究进展

发布时间：2018-11-12 14:50

【摘要】：稀土高值化利用是提升我国稀土资源附加值的重要途径,开拓稀土离子在电化学储能材料中的应用是稀土高值化利用的具体方案之一。综述了稀土离子在电化学储能电极材料应用中的最新研究进展,证明了稀土离子能够有效提升电极材料的电化学性能,同时分析了稀土离子在电化学反应中的作用机制,探讨了稀土离子的利用形式以及高效提升电化学性能的方式。从稀土离子掺杂、稀土离子包覆电极材料入手,具体介绍了稀土离子在稳定电极材料结构、改善电极材料电子电导率、离子扩散特性等中的作用。稀土离子的电负性和离子尺寸是调节锂离子电池和超级电容器电极材料性能的主要设计依据。希望充分利用我国稀土资源优势,提升我国在稀土电化学储能领域中的研究地位和原始创新能力。
[Abstract]:The high value utilization of rare earth is an important way to improve the added value of rare earth resources in China. It is one of the concrete schemes to develop the application of rare earth ions in electrochemical energy storage materials. The latest research progress in the application of rare earth ions in electrochemical energy storage electrode materials is reviewed. It is proved that rare earth ions can effectively improve the electrochemical properties of electrode materials, and the mechanism of action of rare earth ions in electrochemical reactions is also analyzed. The utilization of rare earth ions and the ways to improve electrochemical performance were discussed. Starting with rare earth ion doping and rare earth ion coated electrode materials, the role of rare earth ions in stabilizing the structure of electrode materials, improving the electronic conductivity and ion diffusion characteristics of electrode materials is introduced in detail. The electronegativity and ion size of rare earth ions are the main design basis for regulating the performance of lithium ion batteries and supercapacitor electrode materials. It is hoped that we can make full use of the advantages of rare earth resources in order to promote our country's research status and original innovation ability in the field of rare earth electrochemical energy storage.
【作者单位】：中国科学院长春应用化学研究所稀土资源利用国家重点实验室;延边大学化学系;
【基金】：国家自然科学基金项目(51125009,91434118);国家自然科学基金创新研究群体项目(21521092) 中国科学院国际合作局对外合作重点项目(121522KYS820150009);中国科学院百人计划及吉林省科技发展计划项目(20160520002JH)
【分类号】：O646.54

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