Effects of fluoroethylene carbonate-induced solid-electrolyte-interface layers on carbon-based anode materials for potassium ion batteries
- Authors
- Yoon, S.U.; Kim, H.; Jin, H.-J.; Yun, Y.S.
- Issue Date
- 1-5월-2021
- Publisher
- Elsevier B.V.
- Keywords
- Anode; Electrolyte additive; Fluoroethylene carbonate; Hard carbon; Potassium ion batteries
- Citation
- Applied Surface Science, v.547
- Indexed
- SCIE
SCOPUS
- Journal Title
- Applied Surface Science
- Volume
- 547
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/128881
- DOI
- 10.1016/j.apsusc.2021.149193
- ISSN
- 0169-4332
- Abstract
- Potassium ion batteries (PIBs) are characterized by poor cycling stabilities and insufficient Coulombic efficiencies (CEs) due to the employment of conventional carbonate-based electrolyte systems that are normally used in lithium ion batteries. In this study, we investigated the effects of fluoroethylene carbonate (FEC)-induced solid-electrolyte-interface (SEI) layers on carbon-based anode materials for PIBs and achieved a remarkable enhancement of cycling performance by adding a small amount of FEC (0.2 wt%) in a carbonate-based electrolyte system. The 0.2 wt% FEC additive induced the formation of well-balanced organic–inorganic hybrid SEI layers, which effectively blocked additional electrolyte decomposition in consecutive discharge/charge cycles, causing a significant enhancement of CE and capacity retention. In addition, the FEC additive reduced the self-discharge rate from 2.2 to 1.5 mV h−1, demonstrating its beneficial effect on cycling stabilities. © 2021 Elsevier B.V.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - ETC > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.