| 학회 |
한국공업화학회 |
| 학술대회 |
2019년 봄 (05/01 ~ 05/03, 부산 벡스코(BEXCO)) |
| 권호 |
23권 1호 |
| 발표분야 |
에너지저장·변환_포스터 |
| 제목 |
Potassium Polysulfide Catholyte and Metal-Free Anode for Advanced Potassium–Sulfur Batteries |
| 초록 |
Potassium-ion batteries have attracted widespread interest as a low-cost, alternative energy storage medium to replace the widely used lithium-ion batteries because potassium has higher natural abundance the reserve of potassium is close to that of Na in the Earth’s crust and a lower standard redox potential than other metallic elements. K-S batteries offer low cost and high specific energy density. Previous work pioneered a K−S battery system operating at room temperature based on the conversion reaction S8 ⇆ K2S3. We propose a novel K−S cell consisting of a solution phase potassium polysulfide catholyte and a 3-dimensional freestanding carbon nanotube film electrode. 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 catholyte was constructed to demonstrate the feasibility of a safe K−S battery system free of metallic potassium. |
| 저자 |
김희민 |
| 소속 |
한양대 |
| 키워드 |
Potassium-sulfur battery; Potassium polysulfide; catholyte; metal-free anode
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| E-Mail |
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