Graphene-Co3O4 nanocomposite as an efficient bifunctional catalyst for lithium-air batteries
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- Graphene-Co3O4 nanocomposite as an efficient bifunctional catalyst for lithium-air batteries
- Sun, Chunwen; Li, Fan; Ma, Chao; Wang, Yan; Ren, Yulan; Yang, Wei; Ma, Zhaohui; Li, Jianqi; Chen, Yujin; Kim, Youngsik; Chen, Liquan
- OXYGEN REDUCTION REACTION; RECHARGEABLE LI-O-2 BATTERIES; FUEL-CELL CONDITIONS; ELECTROCATALYST; CARBON; CO3O4; PERFORMANCE; NANOPARTICLES; DURABILITY; COMPOSITE
- Issue Date
- ROYAL SOC CHEMISTRY
- JOURNAL OF MATERIALS CHEMISTRY A, v.2, no.20, pp.7188 - 7196
- A facile hydrothermal route has been developed to prepare graphene-Co 3O4 nanocomposites. The graphene-Co3O 4 nanocomposite catalyst demonstrates an excellent catalytic activity toward oxygen-reduction reaction including a considerably more positive half-wave potential (-0.23 V) than that of pristine graphene (-0.39 V), as well as higher cathodic currents. More importantly, this catalyst shows better long-term durability than the commercial Pt/C catalyst in an alkaline solution. The preliminary results indicate that the graphene-Co3O4 nanocomposite is an efficient and stable bifunctional catalyst for Li-air batteries and may be an alternative to the high-cost commercial Pt/C catalyst for the ORR/OER in alkaline solutions.
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