Effect of N-doped carbon layer on Co3O4 nanowire-graphene composites as anode materials for lithium ion batteries
SCIE
SCOPUS
- Title
- Effect of N-doped carbon layer on Co3O4 nanowire-graphene composites as anode materials for lithium ion batteries
- Authors
- Kim, Yoongon; Noh, Yuseong; Han, Hyunsu; Bae, Jaejin; SEONGMIN, PARK; Lee, Seungjun; Yoon, Wongeun; Ki, Ye Kyu; Ahn, Hyunwoo; Ham, Moon-Ho; Kim, Won Bae
- Date Issued
- 2019-01
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Abstract
- In this paper, an anode material system of Co3O4 nanowires composited with reduced graphene oxide (Co3O4 NWs/rGO) and protected by N-doped carbon layer (Co3O4 NWs/rGO@NC) was prepared for lithium ion batteries. The N-doped carbon layer could serve as stress relief matter to reduce volume changes of the Co3O4 NWs/rGO during repeated charge/discharge cycles, and also enhance the reaction kinetics as a highly conductive layer between the Co3O4 NWs and electrolyte. The Co3O4 NWs/rGO@NC electrode delivered a high discharge capacity of ca. 995 mAh g(-1) at 0.1 C after 65 cycles, and showed a much better rate performance of 428 mAh g(-1) even at a high current rate of 5 C as compared to those of Co3O4 NWs/rGO electrode (203 mAh g(-1)). The demonstrated electrochemical properties suggested that the N-doped carbon coating on the composite of Co3O4 NWs and rGO could significantly enhance the durability and rate capability of the anode material for high performance lithium ion batteries.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/95436
- DOI
- 10.1016/j.jpcs.2018.09.030
- ISSN
- 0022-3697
- Article Type
- Article
- Citation
- JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, vol. 124, page. 266 - 273, 2019-01
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