Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 20, Pages 7836-7841Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201913578
Keywords
cluster compounds; graphene; polyoxometalates; sulfur; surface chemistry
Categories
Funding
- MEXT/JSPS KAKENHI [15K21073, 19K15539, 16H06350, 16H02248, 18H04528, 17H03048, 18H04491]
- Nippon Shokubai Co. Ltd.
- Kondo Zaidan
- JGC-S Scholarship Foundation
- European Union [696656, 785219]
- Spanish Ministry of Economy and Competitiveness MINECO [IJCI-2016-31113]
- University of Trieste
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM)
- AXA Research Fund
- Maria de Maeztu Units of Excellence Program from the Spanish State Research Agency [MDM-2017-0720]
- Grants-in-Aid for Scientific Research [19K15539, 18H04528, 18H04491, 17H03048, 15K21073, 16H06350, 16H02248] Funding Source: KAKEN
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The concise synthesis of sulfur-enriched graphene for battery applications is reported. The direct treatment of graphene oxide (GO) with the commercially available Lawesson's reagent produced sulfur-enriched-reduced GO (S-rGO). Various techniques, such as X-ray photoelectron spectroscopy (XPS), confirmed the occurrence of both sulfur functionalization and GO reduction. Also fabricated was a nanohybrid material by using S-rGO with polyoxometalate (POM) as a cathode-active material for a rechargeable battery. Transmission electron microscopy (TEM) revealed that POM clusters were individually immobilized on the S-rGO surface. This battery, based on a POM/S-rGO complex, exhibited greater cycling stability for the charge-discharge process than a battery with nanohybrid materials positioned between the POM and nonenriched rGO. These results demonstrate that the use of sulfur-containing groups on a graphene surface can be extended to applications such as the catalysis of electrochemical reactions and electrodes in other battery systems.
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