| 학회 |
한국공업화학회 |
| 학술대회 |
2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
26권 1호 |
| 발표분야 |
포스터-에너지저장·변환 |
| 제목 |
Plasmon-enhanced Lithium–O2 Batteries |
| 초록 |
Rechargeable lithium–oxygen (Li–O2) batteries have high theoretical energy density (~3600 Wh kg-1). However, the recharging process of Li–O2 batteries is primarily hindered by the large overpotential caused by sluggish OER kinetics. Plasmonic materials have unique properties with light, known as surface plasmon resonance (SPR). In this study, we demonstrate plasmonic effect in the Li–O2 battery system by incorporating gold nanoparticles on the Ketjen Black (KB) cathode. Upon light irradiation, during discharge, the presence of plasmonic Au NPs induce a morphology change to thin and small Li2O2 particles, which can be easily decomposed during the charging process. As a result, the cell with Au NP/KB shows a significant increase in the round-trip efficiency from 75.2 to 80.2%. Our approach further supported by a meticulous analysis of the near-field enhancement and local heat effects showcasing the promise of plasmonic metal nanostructures in high-energy storage. |
| 저자 |
채경희, 김민주, Filipe Marques Mota, 김동하
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| 소속 |
이화여자대 |
| 키워드 |
Li–O2 battery; Plasmonics
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| E-Mail |
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