7Li and 1H MAS NMR observation of interphase layers on lithium nickel oxide based positive electrodes of lithium-ion batteries

被引：60

作者：

Ménétrier, M ^{[1
]}

Vaysse, C

Croguennec, L

Delmas, C

Jordy, C

Bonhomme, F

Biensan, P

机构：

[1] Univ Bordeaux 1, CNRS, Inst Chim Mat Condensee Bordeaux, F-33608 Pessac, France

[2] Univ Bordeaux 1, Ecole Natl Super Chim & Phys Bordeaux, F-33608 Pessac, France

[3] Direct Rech, SAFT, F-33074 Bordeaux, France

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2004年 / 7卷 / 06期

关键词：

D O I：

10.1149/1.1697905

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Li-7 and H-1 magic-angle spinning (MAS) NMR spectra were recorded for Li(Ni, Co, Al) O-2 samples. The Li-7 MAS NMR signal of the layer on the pristine material is close to that of Li2CO3 in close contact with it. Its lineshape, due to dipolar interaction with electron spins of the material, is drastically different from that of pure Li2CO3. Upon hydration, this layer grows, while H-1 NMR suggests that some lithium in the material is replaced by protons. Upon electrochemical cycling, the original layer is replaced by a different one, the solid electrolyte interphase, with distinct Li-7 and H-1 NMR signatures, showing its largely organic nature. (C) 2004 The Electrochemical Society.

引用

页码：A140 / A143

页数：4

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