储能科学与技术 ›› 2016, Vol. 5 ›› Issue (3): 324-328.doi: 10.3969/j.issn.2095-4239.2016.03.009

• 研究开发 • 上一篇    下一篇

新型O3-NaCu1/9Ni2/9Fe1/3Mn1/3O2钠离子电池正极材料研究

穆林沁,戚兴国,胡勇胜,李  泓,陈立泉,黄学杰   

  1. 中国科学院物理研究所,北京 100190
  • 收稿日期:2016-03-13 修回日期:2016-03-30 出版日期:2016-05-01 发布日期:2016-05-01
  • 通讯作者: 胡勇胜,研究员,E-mail:yshu@iphy.ac.cn
  • 作者简介:穆林沁(1987—),女,博士研究生,研究方向为钠离子电池新型电极材料以及器件,E-mail: mulinqin2006@126.com
  • 基金资助:
    国家自然科学基金(51222210和11234013),科技部高技术研究发展计划(863计划)(2009AA033101)及中国科学院“百人计划”项目

Electrochemical properties of novel O3-NaCu1/9Ni2/9Fe1/3Mn1/3O2 as cathode material for sodium-ion batteries

MU Linqin, QI Xinguo, HU Yongsheng, LI Hong, CHEN Liquan, HUANG Xuejie   

  1. Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2016-03-13 Revised:2016-03-30 Online:2016-05-01 Published:2016-05-01

摘要: 由于钠具有资源丰富和成本低廉的优势,钠离子电池再次受到科学界和工业界的广泛关注。发展低成本、性能优异的正极材料对于钠离子电池至关重要。本文通过向O3-Na0.90[Cu0.22Fe0.30Mn0.48]O2材料中引入容易变价的Ni2+得到一种不含Mn3+的钠离子电池新型正极材料O3-NaCu1/9Ni2/9Fe1/3Mn1/3O2,该材料具有127 mA•h/g可逆比容量和3.1 V平均放电电压。由该正极与硬碳球负极组装成全电池具有248 W•h/kg的理论能量密度,高达93%的能量转化效率和优异的循环性能。

关键词: 层状氧化物, 正极材料, 钠离子电池

Abstract: Sodium-ion batteries have attracted widespread attentions due to the abundant sodium resources and their potential low cost. It is crucial to develop low-cost and excellent performance cathode materials for SIBs. Herein, O3-NaCu1/9Ni2/9Fe1/3Mn1/3O2, a novel cathode material without Mn3+ has been synthesized by a simple solid-state reaction. Galvanostatic charge/discharge measurement for the O3-NaCu1/9Ni2/9Fe1/3Mn1/3O2 electrode between 2.0 V and 4.0 V provides a reversible capacity of 127 mA•h/g and the average discharge voltage of 3.1 V. The full cell using it as the cathode and hard carbon as the anode delivers an energy density of 248 W•h/kg, an energy conversion efficiency of 93% and an excellent cycling performance.

Key words:

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