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Toward High-Safety Potassium-Sulfur Batteries Using a Potassium Polysulfide Catholyte and Metal-Free Anode
- Issue Date
- Mar-2018
- Publisher
- American Chemical Society
- Citation
- ACS Energy Letters, v.3, no.3, pp.540 - 541
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS Energy Letters
- Volume
- 3
- Number
- 3
- Start Page
- 540
- End Page
- 541
- ISSN
- 2380-8195
- Abstract
- Based on the reversible conversion reactions, K2Sx (S <= x <= 6) ->(discharge) K2S3 ->(charge) K2S5, discharge charge the proposed K-S battery delivered a high discharge capacity of similar to 400 mAh g(-1) at 0.1 C -rate with stable cycle retention (94% after 20 cycles) and good rate capability up to 2 C -rate. In addition, instead of an explosive and highly reactive potassium metal electrode, a full cell consisting of an electrochemically potassium -impregnated hard carbon and the K2Sx (5 <= x <= 6) catholyte was constructed to demonstrate the feasibility of a safe K S battery system free of metallic potassium.
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- 서울 공과대학 > 서울 에너지공학과 > 1. Journal Articles
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Related Researcher
- Sun, Yang Kook
- COLLEGE OF ENGINEERING (DEPARTMENT OF ENERGY ENGINEERING)