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Kim, Youngsik
YK Research
Research Interests
  • Ionic conducting ceramic electrolyte membranes, energy conversion and storage materials and devices

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Graphene-Co3O4 nanocomposite as an efficient bifunctional catalyst for lithium-air batteries

Cited 1 times inthomson ciCited 1 times inthomson ci
Title
Graphene-Co3O4 nanocomposite as an efficient bifunctional catalyst for lithium-air batteries
Author
Sun, ChunwenLi, FanMa, ChaoWang, YanRen, YulanYang, WeiMa, ZhaohuiLi, JianqiChen, YujinKim, YoungsikChen, Liquan
Keywords
OXYGEN REDUCTION REACTION; RECHARGEABLE LI-O-2 BATTERIES; FUEL-CELL CONDITIONS; ELECTROCATALYST; CARBON; CO3O4; PERFORMANCE; NANOPARTICLES; DURABILITY; COMPOSITE
Issue Date
201405
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY A, v.2, no.20, pp.7188 - 7196
Abstract
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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DOI
http://dx.doi.org/10.1039/c4ta00802b
ISSN
2050-7488
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