A bi-functional metal-free catalyst composed of dual-doped graphene and mesoporous carbon for rechargeable lithium-oxygen batteries
- Authors
- Kim, Jae-Hong; Kannan, Aravindaraj G.; Woo, Hyun-Sik; Jin, Dae-Gun; Kim, Wonkeun; Ryu, Kyounghan; Kim, Dong-Won
- Issue Date
- Aug-2015
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY A, v.3, no.36, pp.18456 - 18465
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY A
- Volume
- 3
- Number
- 36
- Start Page
- 18456
- End Page
- 18465
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/156621
- DOI
- 10.1039/c5ta05334j
- ISSN
- 2050-7488
- Abstract
- Mesoporous carbon on nitrogen and sulfur co-doped graphene nanosheets (NSGC) was synthesized and its bi-functional catalytic activity toward oxygen reduction reaction and oxygen evolution reaction was investigated. The NSGC material showed high bi-functional catalytic activity due to the synergistic effect of co-doping of sulfur and nitrogen, as well as the presence of a hierarchical porous structure. The enhanced bi-functional catalytic activity of NSGC facilitated the efficient formation and decomposition of Li2O2 on the air cathode. The lithium-oxygen cell assembled with the NSGC-based air cathode delivered a high initial discharge capacity of 11 431 mA h g(-1) and exhibited good cycling stability. The hybrid structure consisting of mesoporous carbon with co-doped graphene nanosheets can be an effective strategy to improve the round-trip efficiency and cycle life of lithium-oxygen batteries.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 화학공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/156621)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.