A review of conduction phenomena in Li-ion batteries |
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Authors: | Myounggu Park Myoungdo Chung Ann Marie Sastry |
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Affiliation: | a Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, United States b Department of Material Science and Engineering, University of Michigan, Ann Arbor, MI 48109, United States c Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, United States |
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Abstract: | Conduction has been one of the main barriers to further improvements in Li-ion batteries and is expected to remain so for the foreseeable future. In an effort to gain a better understanding of the conduction phenomena in Li-ion batteries and enable breakthrough technologies, a comprehensive survey of conduction phenomena in all components of a Li-ion cell incorporating theoretical, experimental, and simulation studies, is presented here. Included are a survey of the fundamentals of electrical and ionic conduction theories; a survey of the critical results, issues and challenges with respect to ionic and electronic conduction in the cathode, anode and electrolyte; a review of the relationship between electrical and ionic conduction for three cathode materials: LiCoO2, LiMn2O4, LiFePO4; a discussion of phase change in graphitic anodes and how it relates to diffusivity and conductivity; and the key conduction issues with organic liquid, solid-state and ionic liquid electrolytes. |
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Keywords: | Ionic conduction Electrical conduction Cathode Anode Electrolyte Lithium-ion battery |
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