In situ XAFS study of LiNi0.5Mn0.5O2 cathode for Li rechargeable batteries

被引：11
|
作者：
Nakano, H [1 ]
Nonaka, T [1 ]
Okuda, C [1 ]
Ukyo, Y [1 ]
机构：
[1] Toyota Cent Res & Dev Labs Inc, Nagakute, Aichi 4801192, Japan
来源：
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2003年 / 111卷 / 01期
关键词：
in situ XAFS; lithium nickel manganese oxide; layered structure; lithium ion battery; cathode;
D O I：
10.2109/jcersj.111.33
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The initial charge/discharge behavior of LiNi0.5Mn0.5O2 for a Li-ion battery has been examined by XRD, in situ XAFS and electrochemical methods. The LiNi0.5Mn0.5O2 (R3m : a = 0.28999 (7) nm, c = 1.4330 (7) nm in a hexagonal setting) was observed to retain its initial structure after charging to 4.5 V (vs. Li/Li+). XAFS measurements have also revealed that the majority of the nickel and manganese, respectively, exists in a divalent and a tetravalent state. Upon charging LiNi0.5Mn0.5O(2), Ni2+ ions were consequently oxidized to Ni4+. A Li-ion cell constructed with LiNi(0.5)Mn0.5O(2)/graphite shows only a 15% capacity loss after 500 cycles at 60degreesC.
引用
收藏
页码：33 / 36
页数：4
相关论文
共 50 条
  • [1] Synthesis of LiNi0.5Mn0.5O2 as cathode material for lithium rechargeable cells
    Xiao, J
    Zeng, LY
    Chen, ZY
    Zhao, H
    Peng, ZD
    CHINESE JOURNAL OF INORGANIC CHEMISTRY, 2006, 22 (04) : 685 - 690
  • [2] Effect of Mg Dopant on the Electrochemical Performance of LiNi0.5Mn0.5O2 Cathode Materials for Lithium Rechargeable Batteries
    Nithya, C.
    Lakshmi, R.
    Gopukumar, S.
    JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2012, 159 (08) : A1335 - A1340
  • [3] A study on Preparation Methods of LiNi0.5Mn0.5O2 Cathode Materials
    Lang, Fengrao
    RESEARCH ON MECHANICS, DYNAMIC SYSTEMS AND MATERIAL ENGINEERING, 2013, 625 : 189 - 192
  • [4] Li de-intercalation mechanism in LiNi0.5Mn0.5O2 cathode material for Li-ion batteries
    Arachi, Y
    Kobayashi, H
    Emura, S
    Nakata, Y
    Tanaka, M
    Asai, T
    Sakaebe, H
    Tatsumi, K
    Kageyama, H
    SOLID STATE IONICS, 2005, 176 (9-10) : 895 - 903
  • [5] The Influence of Surface Chemistry on the Rate Capability of LiNi0.5Mn0.5O2 for Lithium Rechargeable Batteries
    Yabuuchi, Naoaki
    Lu, Yi-Chun
    Mansour, Azzam N.
    Kawaguchi, Tadashi
    Shao-Horn, Yang
    ELECTROCHEMICAL AND SOLID STATE LETTERS, 2010, 13 (11) : A158 - A161
  • [6] Synthesis and Electrochemical Properties of Hexagonal Sliced LiNi0.5Mn0.5O2 as Cathode Materials for Li-ion Batteries
    Dou, Shumei
    Li, Qing
    ASIAN JOURNAL OF CHEMISTRY, 2014, 26 (09) : 2632 - 2636
  • [7] LiNi0.5Mn0.5O2 hierarchical nanorods as high-capacity cathode materials for Li-ion batteries
    Yang, Jingang
    Guo, Biao
    He, Hong
    Li, Yuan
    Song, Chunlin
    Liu, Gang
    JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 698 : 714 - 718
  • [8] A new synthetic route of LiNi0.5Mn0.5O2 as the cathode material of secondary lithium batteries
    Na, SH
    Kim, HS
    Moon, SI
    ELECTROCHIMICA ACTA, 2004, 50 (2-3) : 449 - 452
  • [9] Freeze drying synthesis of LiNi0.5Mn0.5O2 cathode materials
    Shlyakhtin, OA
    Yoon, YS
    Choi, SH
    Oh, YJ
    ELECTROCHIMICA ACTA, 2004, 50 (2-3) : 505 - 509
  • [10] Preparation of LiNi0.5Mn0.5O2 cathode materials by urea hydrolysis coprecipitation
    Xiao, Liang
    Liu, Xiaojun
    Zhao, Xuan
    Liang, Haixia
    Liu, Hanxing
    SOLID STATE IONICS, 2011, 192 (01) : 335 - 338
12345