Local Structure of Li-rich Layered Cathode Material Li[Ni0.17Li0.2Co0.07Mn0.56]O2

被引：7

作者：

Ito, Atsushi ^{[1
]}

Sato, Yuichi ^{[2
]}

Sanada, Takashi ^{[3
]}

Ohwaki, Tsukuru ^{[1
]}

Hatano, Masaharu ^{[1
]}

Horie, Hideaki ^{[1
]}

Ohsawa, Yasuhiko ^{[1
]}

机构：

[1] Nissan Motor Co Ltd, Nissan Res Ctr, Kanagawa 2378523, Japan

[2] Kanagawa Univ, Fac Engn, Dept Mat & Life Chem, Kanagawa Ku, Yokohama, Kanagawa 2218686, Japan

[3] NISSAN ARC LTD, Yokosuka, Kanagawa 2370061, Japan

来源：

ELECTROCHEMISTRY | 2010年 / 78卷 / 05期

关键词：

Cathode Material; Li[Ni0.17Li0.2Co0.07Mn0.56]O-2; HR-STEM; XAS; LITHIUM-ION BATTERIES;

D O I：

10.5796/electrochemistry.78.380

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The local structure of Li[Ni0.17Li0.2Co0.07Mn0.56]O-2 was analyzed by high resolution scanning transmission electron microscopy (HR-STEM) and X-ray absorption spectroscopy (XAS). The HR-STEM images clearly showed a new type of stacking fault, as well as visual patterns of Li-ordering in the transition-metal (TM) layers. The XAS data showed that the valence states of the component TMs are Ni(II), Co( III) and Mn(IV), suggesting that some of the Li(I) in the TM layers of Li2MnO3 structure is replaced by Ni(). Based on the results obtained, a detailed structural model for Li-rich solid-solution cathode materials was proposed.

引用

页码：380 / 383

页数：4

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