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Multiscale Microstructure Modeling and Design of Electrochemomechanics in Lithium-ion Batteries

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자료유형	E-Book
개인저자	Wu, Linmin.
단체저자명	Purdue University. Mechanical Engineering.
서명/저자사항	Multiscale Microstructure Modeling and Design of Electrochemomechanics in Lithium-ion Batteries.
발행사항	[S.l.] : Purdue University., 2018
발행사항	Ann Arbor : ProQuest Dissertations & Theses, 2018
형태사항	150 p.
소장본 주기	School code: 0183.
ISBN	9780438154490
일반주기	Source: Dissertation Abstracts International, Volume: 79-12(E), Section: B. Advisers: Jing Zhang
요약	This thesis investigates the electro-chemo-mechanics behavior of electrodes in lithium ion batteries. One of the critical challenges in advanced lithium ion batteries is preventing fracture and mechanical failure of electrodes during lithium ins
요약	Numerical simulations have the potentials for design optimization of lithium ion batteries. For traditional Newman's model, it is limited by the assumption that the electrodes are constructed with uniformly distributed spherical particles of equ
요약	Important parameters such as Young's modulus were investigated by ab initio tensile tests. The Young's modulus and ultimate strength of LixCoO2 under various lithium ion concentration were calculated. The observed Li concentration dependent mec
요약	The model was used to study the diffusion and mechanics behaviors in polycrystalline microstructures with varying grain size, grain boundaries and crystallographic orientations. It is found that the chemical diffusion coefficients increase with
요약	The developed model was also applied to study the diffusion induced stress in realistic microstructures reconstructed from FIB-SEM and CT. By simulating discharge processes, the results show that microstructure has a significant influence on the
요약	The model was extended to study the phase separation and stress generation. Th extended model can track the phase boundary implicitly and can be used in complex geometries. Compared with the elliptical and spherical particles, the stress in phas
요약	In summary, a multi-scale multi-physics microstructure based model was developed to evaluate the electro-chemo-mechanics in lithium ion batteries. The model can provide a computational tool for battery materials design.
일반주제명	Mechanical engineering.
언어	영어
기본자료 저록	Dissertation Abstracts International79-12B(E). Dissertation Abstract International
대출바로가기	http://www.riss.kr/pdu/ddodLink.do?id=T14997822