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A Generic Conversion Strategy: From 2D Metal Carbides (M xC y) to M-Self-Doped Graphene toward High-Efficiency Energy Applications.
- Source :
-
Advanced Functional Materials . 2/23/2017, Vol. 27 Issue 8, pn/a-N.PAG. 11p. - Publication Year :
- 2017
-
Abstract
- This study first presents a subtle thermal-chlorination strategy for a universal transformation of abundant 2D metal carbides (M xC y, e.g., Cr3C2, Mo2C, NbC, and VC) to 2D graphene and M-self-doped graphene (MG). The as-obtained MG endows a transparent sheet architecture of one to four atomic layers. Simultaneously, MG with different M amounts is synthesized by tuning the chlorination parameters. Among them, the novel and representative Cr-self-doped graphene with optimal Cr amount (4.81 at%) demonstrates the outstanding electrochemical performance. It presents an energy density of 686 W h per kg electrode and a power density of more than 391 W per kg electrode as anode material of Li ion batteries, and four-fold activity against the commercial iridium oxide electrode toward oxygen evolution reaction as well as a comparable oxygen reduction reaction performance to the commercial platinum catalyst. Moreover, this method is readily scalable to produce graphene and MG electrode materials on industrial levels. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1616301X
- Volume :
- 27
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Advanced Functional Materials
- Publication Type :
- Academic Journal
- Accession number :
- 121349493
- Full Text :
- https://doi.org/10.1002/adfm.201604904