Correlation between irreversible capacity and electrolyte solvents degradation probed by NMR in Si-based negative electrode of Li-ion cell

被引：56

作者：

Delpuech, N. ^{[1
,2
]}

Dupre, N. ^{[1
,3
]}

Mazouzi, D. ^{[1
]}

Gaubicher, J. ^{[1
,3
]}

Moreau, P. ^{[1
,3
]}

Bridel, J. S. ^{[2
]}

Guyomard, D. ^{[1
,3
]}

Lestriez, B. ^{[1
,3
]}

机构：

[1] Univ Nantes, CNRS, Inst Mat Jean Rouxel IMN, F-44322 Nantes, France

[2] Umicore Grp Res & Dev, Olen, Belgium

[3] CNRS, FR 3459, RS2E, F-75700 Paris, France

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2013年 / 33卷

关键词：

Silicon electrode; Li-ion batteries; NMR; SEI; BATTERY ANODES; CYCLE LIFE; LITHIUM; PERFORMANCE; GRAPHITE; HARD;

D O I：

10.1016/j.elecom.2013.05.001

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Few studies relate that the failure mechanism of silicon-based electrodes is the SEI formation. In this work, we used quantitative solid-state high-resolution nuclear magnetic resonance to show that main cause of irreversible capacity is not the decomposition of lithium salt but the degradation of electrolyte solvent with the formation of non lithiated carbon species as polymer or oligomers. (c) 2013 Elsevier B.V. All rights reserved.

引用

页码：72 / 75

页数：4

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