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Improvement of cycle performance of all-solid-state lithium ion batteries with clustered composite electrodes using PTFE powder

Title
Improvement of cycle performance of all-solid-state lithium ion batteries with clustered composite electrodes using PTFE powder
Author
신동욱
Keywords
All-solid-state lithium ion battery; Solid electrolyte; Cycle performance; PTFE powder; Composite cathode
Issue Date
2017-11
Publisher
KOREAN ASSOC CRYSTAL GROWTH
Citation
JOURNAL OF CERAMIC PROCESSING RESEARCH, v. 18, no. 9, page. 683-686
Abstract
Cycle performance is a technical challenge for the all-solid-state lithium ion battery because of contact loss between the active materials and solid electrolytes. Providing an intimate adhesive contact between solid electrolyte and active materials might be the most effective and practical solution. To address this issue, we added PTFE powder to the composite cathode in order to create good conducting paths for Li ions and electrons of the lithium batteries. We show the PTFE added composite cathode has significantly better cycle performance. Electrochemical impedance spectroscopy suggests that the charge transfer resistance increased as the amount of PTFE powder increased. On the other hand, differential capacity vs. voltage profiles showed that polarization of the composite cathode was suppressed as cycle number increased in the PTFE added composites. A preliminary model is suggested to guide future development of the microstructure in all-solid-state batteries.
URI
http://jcpr.kbs-lab.co.kr/file/JCPR_vol.18_2017/JCPR18-9/10.2017-152_683-686.pdfhttps://repository.hanyang.ac.kr/handle/20.500.11754/116062
ISSN
1229-9162
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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