The effects of gamma-radiation on lithium-ion cells

被引：19

作者：

Ding, N. ^{[1
]}

Zhu, J. ^{[1
]}

Yao, Y. X. ^{[1
]}

Chen, C. H. ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2006年 / 51卷 / 28期

基金：

中国国家自然科学基金;

关键词：

lithium cells; radiation; gamma ray; discoloration; lithium hexafluorophosphate;

D O I：

10.1016/j.electacta.2006.04.046

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Planetary explorations of human beings necessitate the research of the influence of gamma-radiation on lithium-ion cells. In this study, the radioactive Co-60 was used as the radiation source. The electrochemical performances of LiCoO2/graphite full cells and LiCoO2/Li half-cells with a LiPF6-based electrolyte were measured before and after the radiation. The structural and compositional changes of the cell components were evaluated by means of X-ray diffraction (XRD), Fourier transformation infrared spectroscopy (FTIR), and H-1 nuclear magnetic resonance spectroscopy (H-1 NMR). The experimental results indicate that the cell performance is substantially deteriorated after the radiation due to two aspects of changes, i.e. radiation-induced defects in LiCoO2 and production of carboxyl in the electrolyte. The cell degradation is more pronounced for the LiCoO2/C full cells than for LiCoO2/Li half-cells owing to the reaction between active lithium and the carboxyl. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：6320 / 6324

页数：5

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