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Hong, Sung You
Synthetic Organic Chemistry Laboratory
Research Interests
  • Synthetic organic chemistry, transition metals, oxidation state

Electrolyte-free graphite electrode with enhanced interfacial conduction using Li+-conductive binder for high-performance all-solid-state batteries

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dc.contributor.author Shin, Dong Ok ko
dc.contributor.author Kim, Hyungjun ko
dc.contributor.author Jung, Seungwon ko
dc.contributor.author Byun, Seoungwoo ko
dc.contributor.author Choi, Jaecheol ko
dc.contributor.author Kim, Min Pyeong ko
dc.contributor.author Kim, Ju Young ko
dc.contributor.author Kang, Seok Hun ko
dc.contributor.author Park, Young-Sam ko
dc.contributor.author Hong, Sung You ko
dc.contributor.author Cho, Maenghyo ko
dc.contributor.author Lee, Young-Gi ko
dc.contributor.author Cho, Kyeongjae ko
dc.contributor.author Lee, Yong Min ko
dc.date.available 2022-06-03T01:28:38Z -
dc.date.created 2022-05-30 ko
dc.date.issued 2022-08 ko
dc.identifier.citation ENERGY STORAGE MATERIALS, v.49, pp.481 - 492 ko
dc.identifier.issn 2405-8297 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/58576 -
dc.description.abstract Electrodes supported by conductive binders are expected to outperform ones with inert binders that potentially disturb electronic/ionic contacts at interfaces. Unlike electron-conductive binders, the employment of Li+-conductive binders has attracted relatively little attention due to the liquid electrolyte (LE)-impregnated electrode configuration in the conventional lithium-ion batteries (LIBs). Herein, an all-solid-state electrolyte-free electrode where electrolyte components are completely excluded is introduced as a new tactical electrode construction to evaluate the effectiveness of the Li+-conductive binder on enhancing the interfacial conduction, ultimately leading to high-performance all-solid-state batteries (ASSBs). Conductive lithium carboxymethyl cellulose (Li-CMC) is prepared through an optimized two-step cation-exchange reaction without physical degradation. The electrolyte-free graphite electrode employing Li-CMC as the binder shows strikingly improved areal and volumetric capacity of 1.46 mAh cm−2 and 490 mAh cm−3 at a high current rate (1.91 mA cm−2) and 60 °C which are far superior to those (1.07 mAh cm−2 and 356.7 mAh cm−3) using Na-CMC. Moreover, systematic monitoring of the lithiation dynamics inside the electrolyte-free electrode clarifies that the interfacial Li+ conduction is greatly promoted in the Li-CMC electrode. Complementary analysis from in-depth electrochemical measurements and multiscale simulations verifies that serious internal resistance from impeded interparticle diffusion by inert binders can be substantially mitigated using Li-CMC. ko
dc.language 영어 ko
dc.publisher ELSEVIER ko
dc.title Electrolyte-free graphite electrode with enhanced interfacial conduction using Li+-conductive binder for high-performance all-solid-state batteries ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-8512913049 ko
dc.identifier.wosid 000798010600002 ko
dc.type.rims ART ko
dc.identifier.doi 10.1016/j.ensm.2022.04.029 ko
dc.identifier.url https://www.sciencedirect.com/science/article/pii/S2405829722002252?via%3Dihub ko
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