NaF-M(M=Fe, Cu)钠离子电池转换正极材料的研究

doi:10.61558/2993-074X.2918

电化学（中英文） ›› 2012, Vol. 18 ›› Issue (4): 291-294. doi: 10.61558/2993-074X.2918

• 化学电源近期研究专辑（武汉大学杨汉西教授主编） • 下一篇

NaF-M(M=Fe, Cu)钠离子电池转换正极材料的研究

李婷, 陈重学, 曹余良, 杨汉西*

武汉大学化学与分子科学学院，湖北武汉 430072

收稿日期:2011-11-24 修回日期:2012-02-11 出版日期:2012-08-28 发布日期:2012-02-16
通讯作者: 杨汉西 E-mail:hxyang@whu.edu.cn
基金资助:
国家自然科学基金项目（No. 2009CB2201003）资助

NaF-M (M = Fe, Cu) Nanocomposites as Conversion Cathode Materials for Sodium Ion Batteries

LI Ting, CHEN Zhong-Xue, CAO Yu-Liang, YANG Han-Xi*

College of Chemistry and Molecular Science, Wuhan University, Wuhan, 430072，Hubei, China

Received:2011-11-24 Revised:2012-02-11 Published:2012-08-28 Online:2012-02-16
Contact: YANG Han-Xi E-mail:hxyang@whu.edu.cn

摘要/Abstract

摘要： 以纳米TiN为研磨剂，采用机械球磨技术制备了NaF-M（M = Fe, Cu）纳米复合物，探索了这类复合物作为钠离子电池转换正极材料的可能性. 电化学测试表明，NaF-Fe和NaF-Cu纳米复合物电极在钠离子电解液中能实现与Na⁺的逆向转换反应，其可逆放电容量达150 mAh.g^-1以上，并具有较好的循环寿命. 只要创造了适合相转变反应进行的微区结构，钠离子的转换反应也可以通过可逆的电化学转换反应实现，并从起始的富钠放电态直接充电至贫钠的荷电态. 本工作为开发高容量钠离子电池正极材料提供了新途径.

关键词: 电化学转换反应, 钠离子电池, 正极材料

Abstract: The NaF-M (M = Fe, Cu) nanocomposites were prepared by high-energy ball milling using TiN grinding nanoparticles and investigated as cathode materials for sodium ion batteries. The experimental results demonstrated that NaF-Fe and NaF-Cu nanocomposites can go through electrochemical conversion reaction with Na⁺ uptake or removal, delivering a reversible capacity of ~ 150 mAh.g^-1, even through a reversed conversion from initial discharged state to a charged state. These results reveal the possibility to realize a conversion reaction as long as NaF and elemental metal particles are intimately contacted to form active nanocomposites at nanodomain, which suggests a potential feasibility to use these nanocomposites as sodium-rich cathode materials for sodium ion batteries.

Key words: electrochemical conversion reactions, sodium ion batteries, cathode materials

中图分类号:

O646

李婷, 陈重学, 曹余良, 杨汉西. NaF-M(M=Fe, Cu)钠离子电池转换正极材料的研究[J]. 电化学（中英文）, 2012, 18(4): 291-294.

LI Ting, CHEN Zhong-Xue, CAO Yu-Liang, YANG Han-Xi. NaF-M (M = Fe, Cu) Nanocomposites as Conversion Cathode Materials for Sodium Ion Batteries[J]. Journal of Electrochemistry, 2012, 18(4): 291-294.

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https://electrochem.xmu.edu.cn/CN/Y2012/V18/I4/291

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NaF-M(M=Fe, Cu)钠离子电池转换正极材料的研究

NaF-M (M = Fe, Cu) Nanocomposites as Conversion Cathode Materials for Sodium Ion Batteries

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