Journal
ELECTROCHIMICA ACTA
Volume 110, Issue -, Pages 403-410Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2013.07.143
Keywords
Silicon anode; Lithium battery; Electrodeposition; Organic/inorganic composite; Durability
Categories
Funding
- Research & Development Initiative for Scientific Innovation of New Generation Batteries from the New Energy and Industrial Technology Development Organization of Japan
- Ministry of Education, Culture, Sports, Science and Technology, Japan
Ask authors/readers for more resources
The structure of the highly durable silicon-based anode prepared by electrodeposition was investigated for volume change and chemical structure. With repeated charge-discharge cycles, the volume change resulting from the anode film thickness decreased, and, after 100 cycles, essentially no difference was observed between the charged and discharged states. The buffering effect of the volume change was considered to be achieved by the formation of Li2O, Li2CO3, and lithium silicates such as Li4SiO4, whose existence were supported by STEM, EELS, and XPS analyses. From the structural analyses, the main reactions related to the capacity of the silicon-based anode were considered to be the formation of LixSi and Li2Si2O5. LixSi and Li2Si2O5 can be delithiated into Si and SiO2, respectively. (C) 2013 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available