钠离子电池正负极材料研究新进展  

New Progress in Research on Anode and Cathode Materials for Sodium-ion Batteries

作　　者：周云 Zhou Yun

机构地区：[1]湖南工业职业技术学院,湖南省长沙市410000

出　　处：《时代汽车》2022年第20期116-118,共3页Auto Time

基　　金：湖南工业职业技术学院校级项目(GYKYW201813)。

摘　　要：对钠离子电池正负材料的研究始于20世纪,经历了由盛变衰的转变过程,但与此形成对比的是,钠离子元素明显显示出优势和发展前景。钠离子电池的工作原理与锂离子电池相似,但其成本更低、也更安全,研究钠离子电池的正负材料尤为重要。本文对现有钠离子正负材料进行了系统的综述。首先介绍了各种正负材料的电化学结构和特性,并分析了钠离子电池正负材料的局限性。钠离子电池储能过程中,较大的离子对材料结构有重要影响,导致能量密度损失,以及由于缓慢的反应动力学造成的功率密度下降。在此基础上总结了目前的改性方法,如掺杂、镀层等。通过对改性材料的研究,材料的电化学性能可以得到提高,为今后钠离子电池正负材料的应用奠定基础。The research on positive and negative materials for sodium-ion batteries began in the 20th century,and has experienced a transition from prosperity to decay.In contrast,sodium ion elements clearly show advantages and development prospects.The working principle of sodium-ion battery is similar to that of lithium-ion battery,but its cost is lower and safer.It is particularly important to study the positive and negative materials of sodium-ion battery.This paper presents a systematic review of the positive and negative materials in the existing ionic sodium element.Firstly,the electrochemical structures and properties of various positive and negative materials are introduced,and the limitations of positive and negative materials for Na-ion batteries are analyzed.During energy storage in Na-ion batteries,larger ions have a significant impact on the material structure,leading to energy density loss and power density drop due to slow reaction kinetics.On this basis,the current modification methods,such as doping and plating,are summarized.Through the study of modified materials,the electrochemical properties of the materials can be improved,laying the foundation for the application of positive and negative materials for sodium-ion batteries in the future.

关 键 词：钠离子电池 正负极材料 研究 进展 

分 类 号：TM9[电气工程—电力电子与电力传动]