Reconstruction of LiCoO2 Cathode Microstructure and Prediction of Effective Transport Coefficients

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	Reconstruction of LiCoO2 Cathode Microstructure and Prediction of Effective Transport Coefficients
	Wu Wei 1,2; Jiang Fang-Ming 1; Zeng Jian-Bang 1
刊名	acta physico-chimica sinica
	2013-11-01
卷号	29 期号:11 页码:2361-2370
关键词	Pore-scale modeling to lithium-ion battery Microstructure reconstruction Monte Carlo approach Characterization Tortuosity Effective transport coefficient Lattice Boltzmann method Random walk method
英文摘要	understanding the impact of microstructure of lithium-ion battery electrodes on performance is important for the development of relevant technologies. in the present work, the monte carlo ising model was extended for the reconstruction of three-dimensional (3d) microstructure of a licoo2 lithium-ion battery cathode. the electrode is reconstructed with a resolution on the scale of 50 nanometers, which allows three individual phases to be evidently distinguished: licoo2 particles as the active material, pores or electrolyte and additives (polyvinylidene fluoride (pvdf) + carbon black). characterization of the reconstructed cathode reveals some important structural and transport properties, including the geometrical connectivity and tortuosity of specific phases, the spatial distribution and volume fractions of specific phases, the specific surface area, and the pore size distribution. a d3q15 lattice boltzmann model (lbm) was developed and used to calculate the effective thermal conductivity and the effective transport coefficient of the electrolyte (or solid) phase. it is found that tortuosity values determined by lbm are more reliable than those predicted by the random walk simulation or the bruggeman equation.
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, physical
研究领域[WOS]	chemistry
关键词[WOS]	effective thermal-conductivity ; porous-media ; boundary-conditions ; battery electrodes ; 3d reconstruction ; insertion cell ; ion ; performance ; simulation ; algorithm
收录类别	SCI
语种	英语
WOS记录号	WOS:000327290800010
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/10045]
专题	中国科学院广州能源研究所
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Lab Adv Energy Syst, CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wu Wei,Jiang Fang-Ming,Zeng Jian-Bang. Reconstruction of LiCoO2 Cathode Microstructure and Prediction of Effective Transport Coefficients[J]. acta physico-chimica sinica,2013,29(11):2361-2370.
APA	Wu Wei,Jiang Fang-Ming,&Zeng Jian-Bang.(2013).Reconstruction of LiCoO2 Cathode Microstructure and Prediction of Effective Transport Coefficients.acta physico-chimica sinica,29(11),2361-2370.
MLA	Wu Wei,et al."Reconstruction of LiCoO2 Cathode Microstructure and Prediction of Effective Transport Coefficients".acta physico-chimica sinica 29.11(2013):2361-2370.