Graphene-Based Hybrid Electrode Material for High-Power Lithium-Ion Batteries
- Authors
- Kim, Haegyeom; Kim, Sung-Wook; Hong, Jihyun; Lim, Hee-Dae; Kim, Hyung Sub; Yoo, Jung-Keun; Kang, Kisuk
- Issue Date
- Jun-2011
- Publisher
- ELECTROCHEMICAL SOC INC
- Citation
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.158, no.8, pp.A930 - A935
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY
- Volume
- 158
- Number
- 8
- Start Page
- A930
- End Page
- A935
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/186212
- DOI
- 10.1149/1.3599632
- ISSN
- 0013-4651
- Abstract
- Graphene based hybrid electrode material is fabricated from an easy and simple chemical method and is demonstrated as a cathode material for Li rechargeable batteries with high capacity and excellent rate capability. The hybrid material delivers a specific capacity of 156 mAh g(-1) at a current rate of 25 mA g(-1) (0.125 C) after 100 cycles with coulombic efficiency of nearly 100%. At elevated current rates, the specific capacity of the hybrid material is over 100 mAh g(-1) even at a current rate of 2500 mA g(-1) (similar to 12.5 C). The excellent battery performance of the hybrid material is attributed to the easy Li ion and electron transport in the amorphous FePO4/graphene hybrid structure, in which electrochemically active amorphous FePO4 films are directly grown on graphene with superior electronic conductivity.
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