Reaction and Mass Transport Simulation of 3-Dimensional All-Solid-State Lithium-Ion Batteries for the Optimum Structural Design. (9th September 2015)

• Record Type: Journal Article
• Authors: Itoh, Fumiya; Inoue, Gen; Kawase, Motoaki
• Is Part Of: ECS transactions. Volume 69:Number 1(2015)
• Page Start: 83
• Page End: 90
• Publication Date: 2015-09-09
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/06901.0083ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : In order to increase energy density and enhance safety, all-solid-state lithium-ion battery has been developed as a storage battery for electric vehicles. However, its power density is too low to be applied for EV. In recent years, 3-dimensional electrode such as an interdigitated electrode is proposed, which can increase both energy density and power density. In this study, electrochemical reactions and mass transport phenomena of 3D all-solid-state battery were simulated with a porous electrode theory. Discharge property was improved by complicating 3D structures and Str. 2 displayed excellent discharge property at a rate of 1 to 10C and a solid electrolytes ionic conductivity of 0.01 to 1 S/m. Furthermore, the structure of which diffusion length is shorter than 36.57 μm can realize the full charge within 6 minutes at more than 1 S/m, and the diffusion length within 8 μm is necessary at 0.01 S/m to 1 S/m.