Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 6, Pages 1888-1892Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201410258
Keywords
electrocatalysis; fuel cells; graphene; oxygen reduction reaction; sulfur doping
Categories
Funding
- National Natural of Science Foundation of China [51402100]
- AFOSR MURI [FA9550-12-1-0037]
- National Science Foundation [IIP-1343270, CMMI-133123]
- Youth 1000 Talent Program of China
- Inter-discipline Research Programme of Hunan University
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1400274] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1363123] Funding Source: National Science Foundation
- Div Of Industrial Innovation & Partnersh
- Directorate For Engineering [1343270] Funding Source: National Science Foundation
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Heteroatom-doped carbon materials have been extensively investigated as metal-free electrocatalysts to replace commercial Pt/C catalysts in oxygen reduction reactions in fuel cells and Li-air batteries. However, the synthesis of such materials usually involves high temperature or complicated equipment. Graphene-based sulfur composites have been recently developed to prolong the cycling life of Li-S batteries, one of the most attractive energy-storage devices. Given the high cost of graphene, there is significant demand to recycle and reuse graphene from Li-S batteries. Herein, we report a green and cost-effective method to prepare sulfur-doped graphene, achieved by the continuous charge/discharge cycling of graphene-sulfur composites in Li-S batteries. This material was used as a metal-free electrocatalyst for the oxygen reduction reaction and shows better electrocatalytic activity than pristine graphene and better methanol tolerance durability than Pt/C.
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