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Overall water splitting by graphdiyne-exfoliated and -sandwiched layered double-hydroxide nanosheet arrays.

Authors :
Hui, Lan
Xue, Yurui
Huang, Bolong
Yu, Huidi
Zhang, Chao
Zhang, Danyan
Jia, Dianzeng
Zhao, Yingjie
Li, Yongjun
Liu, Huibiao
Li, Yuliang
Source :
Nature Communications; 12/14/2018, Vol. 9 Issue 1, p1-1, 1p
Publication Year :
2018

Abstract

It is of great urgency to develop efficient, cost-effective, stable and industrially applicable electrocatalysts for renewable energy systems. But there are still few candidate materials. Here we show a bifunctional electrocatalyst, comprising graphdiyne-exfoliated and -sandwiched iron/cobalt layered double-hydroxide nanosheet arrays grown on nickel foam, for the oxygen and hydrogen evolution reactions. Theoretical and experimental data revealed that the charge transport kinetics of the structure were superior to iron/cobalt layered double-hydroxide, a prerequisite for improved electrocatalytic performance. The incorporation with graphdiyne increased the number of catalytically active sites and prevented corrosion, leading to greatly enhanced electrocatalytic activity and stability for oxygen evolution reaction, hydrogen evolution reaction, as well as overall water splitting. Our results suggest that the use of graphdiyne might open up new pathways for the design and fabrication of earth-abundant, efficient, functional, and smart electrode materials with practical applications. The need for cheap water-splitting materials in order to scale-up and commercialize solar-to-fuel technologies is urgent, but there are still few candidate materials. Here, authors integrate layered double hydroxides with graphdiyne as high-performance overall water-splitting electrocatalysts. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20411723
Volume :
9
Issue :
1
Database :
Complementary Index
Journal :
Nature Communications
Publication Type :
Academic Journal
Accession number :
133570155
Full Text :
https://doi.org/10.1038/s41467-018-07790-x