Breathing of Graphite Particles in a Lithium-Ion Battery

被引：6

作者：

Takata, Keiji ^{[1
]}

Okuda, Mitsuhiro ^{[1
]}

Yura, Nobuki ^{[1
]}

Tamura, Ryota ^{[1
]}

机构：

[1] Kansai Univ, Fac Engn Sci, Suita, Osaka 5648680, Japan

来源：

APPLIED PHYSICS EXPRESS | 2012年 / 5卷 / 04期

关键词：

DOMAIN-STRUCTURE; LI-ION; ELECTRODE;

D O I：

10.1143/APEX.5.047101

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We imaged changes in volume of graphite particles in a Li-ion battery due to the insertion and extraction of Li ions using scanning probe microscopy. When Li ions were extracted from the graphite particles, the particles were contracted, while expansion was induced in the interspaces between the particles. Variations of the images of volume changes depending on modulation frequencies clearly showed lithium intercalation. A linear relationship between the amplitudes of volume changes and the products of the diffusion elements and the reciprocals of the frequencies has been proven. Thus, the detected signals quantitatively well corresponded to the lithium ion movements. (C) 2012 The Japan Society of Applied Physics

引用

页数：3

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