Nanoarchitectonics of the cathode to improve the reversibility of Li-O-2 batteriesopen access
- Authors
- Hien Thi Thu Pham; Yun, Jonghyeok; Kim, So Yeun; Han, Sang A.; Kim, Jung Ho; Lee, Jong-Won; Park, Min-Sik
- Issue Date
- Jul-2022
- Publisher
- BEILSTEIN-INSTITUT
- Keywords
- cathode composition; electrochemistry; Li-O-2 battery; metal-organic; framework; nanoarchitectonics; zeolitic imidazolate framework
- Citation
- BEILSTEIN JOURNAL OF NANOTECHNOLOGY, v.13, pp.689 - 698
- Indexed
- SCIE
SCOPUS
- Journal Title
- BEILSTEIN JOURNAL OF NANOTECHNOLOGY
- Volume
- 13
- Start Page
- 689
- End Page
- 698
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/188672
- DOI
- 10.3762/bjnano.13.61
- ISSN
- 2190-4286
- Abstract
- The strategic design of the cathode is a critical feature for high-performance and long-lasting reversibility of an energy storage system. In particular, the round-trip efficiency and cycling performance of nonaqueous lithium-oxygen batteries are governed by minimizing the discharge products, such as Li2O and Li2O2. Recently, a metal-organic framework has been directly pyrolyzed into a carbon frame with controllable pore volume and size. Furthermore, selective metallic catalysts can also be obtained by adjusting metal ions for outstanding electrochemical reactions. In this study, various bimetallic zeolitic imidazolate framework (ZIF)-derived carbons were designed by varying the ratio of Zn to Co ions. Moreover, carbon nanotubes (CNTs) are added to improve the electrical conductivity further, ultimately leading to better electrochemical stability in the cathode. As a result, the optimized bimetallic ZIF-carbon/CNT composite exhibits a high discharge capacity of 16,000 mAh center dot g(-1), with a stable cycling performance of up to 137 cycles. This feature is also beneficial for lowering the overpotential of the cathode during cycling, even at the high current density of 2,000 mA center dot g(-1).
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 신소재공학부 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/188672)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.