Porous and multiscale bridging study on electrode microstructure for high performance Li-ion battery
- 주제(키워드) Li-ion battery , cathode , anode , LixV2O5 , LixFe3O4 , porous structure , octahedron structure , c-rate
- 발행기관 서강대학교 일반대학원
- 지도교수 김동철
- 발행년도 2017
- 학위수여년월 2017. 2
- 학위명 석사
- 학과 및 전공 일반대학원 기계공학과
- 실제URI http://www.dcollection.net/handler/sogang/000000061398
- 본문언어 영어
- 저작권 서강대학교 논문은 저작권보호를 받습니다.
초록/요약
Since Li-ion battery shows high power density and energy density compared with other batteries, market share & appliance of Li-ion battery continuously grows up. However, Li-ion battery are suffering from huge loss in the specific capacity as the c-rate or cycle increases and safety issues. Therefore, from lots of experiment, various type of micro-, nanostructures suggested for fabrication of highly efficient Li-ion battery. To reduce effort for optimization and prevent deterioration of Li-ion battery, various simulation models are studied. Nevertheless, those models are insufficient to simulate charge-discharge process for various type of micro-, nanostructures. In this thesis, effect of porosity in spherical structure has been studied to enhance capacity of cathode material. Also, by calculating heat generation during charge-discharge process, effect of porosity on thermal stability has been studied. Additionally, multiscale bridged Phase Field Model could provide easy application of various new materials on the simulation model.
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