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Journal Article Diffusion-Dependent Graphite Electrode for All-Solid-State Batteries with Extremely High Energy Density
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Authors
Ju Young Kim, Joonam Park, Myeong Ju Lee, Seok Hun Kang, Dong Ok Shin, Jimin Oh, Jumi Kim, Kwang Man Kim, Young-Gi Lee, Yong Min Lee
Issue Date
2020-09
Citation
ACS Energy Letters, v.5, no.9, pp.2995-3004
ISSN
2380-8195
Publisher
American Chemical Society(ACS)
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1021/acsenergylett.0c01628
Abstract
In all-solid-state batteries, the electrode has been generally fabricated as a composite of active material and solid electrolyte to imitate the electrode of lithium-ion batteries employing liquid electrolytes. Therefore, an efficient protocol to spatially arrange the two components with a scalable method is critical for high-performance all-solid-state batteries. Herein, a design of the all-solid-state electrode is presented for all-solid-state batteries with higher energy density than the typical composite-type electrode. The proposed electrode, composed mostly of the active materials, has a seamless interface between the active materials, which allows interparticle lithium-ion diffusion. Thus, the solid electrolyte can be completely excluded during the electrode manufacturing process, which enables higher flexibility for fabrication protocol by relieving the concerns about (electro)chemistry related to solid electrolytes. Furthermore, it can dramatically enhance the normalized energy density by increasing the content of the active material in the electrode. This electrode concept provides a meaningful advance toward high-performance all-solid-state batteries.
KSP Keywords
Active materials, All-solid-state electrodes, Electrode manufacturing, Graphite electrode, High energy density, High performance, Ion batteries, Liquid electrolyte, Lithium-ion batteries(LIBs), Manufacturing processes, Scalable method