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SCI Article

Maximal Utilization of a High-Loading Cathode in Li-O-2 Batteries: A Double Oxygen Supply System
성명 이윤정()
소속 공과대학 에너지공학과
캠퍼스
우수선정주 2019년 09월 5째주
Author Park, Se Hwan (Dept Energy Engn); Cheon, Yeong Jun (Dept Energy Engn); Lee, Young Joo (Dept Energy Engn); Shin, Kyu Hang (Dept Energy Engn); Hwang, Ye Yeong (Dept Energy Engn); Jeong, Yo Sub (Dept Energy Engn); 이윤정 (Dept Energy Engn);
Corresponding Author Info Lee, YJ (reprint author), Hanyang Univ, Dept Energy Engn, Seoul 04763, South Korea.
E-mail 이메일 아이콘yjlee94@hanyang.ac.kr
Document Type Article
Source ACS APPLIED MATERIALS & INTERFACES Volume:11 Issue:34 Pages:30872-30879 Published:2019
Times Cited 0
External Information http://dx.doi.org/10.1021/acsami.9b08970
Abstract To realize the potential high capacity of lithium-oxygen (Li-O-2) batteries, a double oxygen supply system for cells with high-loading cathodes is devised in this study. High-loading thick electrodes can achieve exceptionally high capacities, but this promise has been plagued by partial utilization of thick electrodes in Li-O-2 cells due to the kinetic limitation imposed by oxygen transport. The proposed double oxygen supply system provides oxygen gas to the cathode not only from the cathode opening but also from the separator side to ensure sufficient oxygen supply to the whole high-loading electrode. Subsequently, the entire region of the high-loading cathode is rendered active, resulting in a uniform vertical distribution of discharge products. The maximum utilization of the high-loading electrodes is, thus, achieved, along with a remarkably increased capacity, low overpotential, and cycle life. By and cycle life. By this strategy, CNT cathodes can be cycled with a capacity of S mAh cm(-2), without using any additional catalyst.
Web of Science Categories Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
Funding Basic Science Research Program of the National Research Foundation of Korea (NRF), Korean Ministry of Science ICT [NRF-2018R1A2B2001176]; Engineering Research Center of Excellence (ERC) Program - National Research Foundation (NRF), Korean Ministry of Scie
Language English
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