In situ Scanning Electron Microscopy of Silicon Anode Reactions in Lithium-Ion Batteries during Charge/Discharge Processes

被引：83

作者：

Chen, Chih-Yao ^{[1
]}

Sano, Teruki ^{[1
]}

Tsuda, Tetsuya ^{[1
]}

Ui, Koichi ^{[2
]}

Oshima, Yoshifumi ^{[3
]}

Yamagata, Masaki ^{[4
]}

Ishikawa, Masashi ^{[4
]}

Haruta, Masakazu ^{[5
]}

Doi, Takayuki ^{[5
]}

Inaba, Minoru ^{[5
]}

Kuwabata, Susumu ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Dept Appl Chem, 2-1 Yamada Oka, Suita, Osaka 5650871, Japan

[2] Iwate Univ, Grad Sch Engn, Dept Frontier Mat & Funct Engn, 4-3-5 Ueda, Morioka, Iwate 0208551, Japan

[3] Japan Adv Inst Sci & Technol, Sch Mat Sci, 1-1 Asahidai, Nomi, Ishikawa 9231292, Japan

[4] Kansai Univ, Dept Chem & Mat Engn, 3-3-35 Yamate Cho, Suita, Osaka 5648680, Japan

[5] Doshisha Univ, Dept Mol Chem & Biochem, 1-3 Tatara Miyakodani, Kyoto 6100321, Japan

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

基金：

日本科学技术振兴机构;

关键词：

X-RAY-DIFFRACTION; NEGATIVE ELECTRODE; CRYSTALLINE SILICON; HIGH-PERFORMANCE; LIQUID ELECTROLYTES; LI; LITHIATION; MECHANISM; FRACTURE; QUANTIFICATION;

D O I：

10.1038/srep36153

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A comprehensive understanding of the charge/discharge behaviour of high-capacity anode active materials, e.g., Si and Li, is essential for the design and development of next-generation high-performance Li-based batteries. Here, we demonstrate the in situ scanning electron microscopy (in situ SEM) of Si anodes in a configuration analogous to actual lithium-ion batteries (LIBs) with an ionic liquid (IL) that is expected to be a functional LIB electrolyte in the future. We discovered that variations in the morphology of Si active materials during charge/discharge processes is strongly dependent on their size and shape. Even the diffusion of atomic Li into Si materials can be visualized using a back-scattering electron imaging technique. The electrode reactions were successfully recorded as video clips. This in situ SEM technique can simultaneously provide useful data on, for example, morphological variations and elemental distributions, as well as electrochemical data.

引用

页数：9

共 47 条

[21] An in situ X-ray diffraction study of the reaction of Li with crystalline Si [J].