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Cited by 357

The DOI matches its Crossref record; 58 of the 58 references it cites were found in a registry or an index.

Cobalt Sulfide/Nickel Sulfide Heterostructure Directly Grown on Nickel Foam: An Efficient and Durable Electrocatalyst for Overall Water Splitting Application

Shit, Subhasis, Chhetri, Suman, Jang, Wooree, Murmu, Naresh C., Koo, Hyeyoung, Samanta, Pranab, Kuila, Tapas·2018·ACS Applied Materials & Interfaces

Abstract

Fabrication of high-performance noble-metal-free bifunctional electrocatalysts for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in water is a promising strategy toward future carbon-neutral economy. Herein, a one-pot hydrothermal synthesis of cobalt sulfide/nickel sulfide heterostructure supported by nickel foam (CoS x /Ni 3 S 2 @NF) was performed. The Ni foam acted as the three-dimensional conducting substrate as well as the source of nickel for Ni 3 S 2 . The formation of CoS x /Ni 3 S 2 @NF was confirmed by X-ray diffraction and X-ray photoelectron spectroscopy. The formation of CoS x /Ni 3 S 2 @NF facilitated easy charge transport and showed synergistic electrocatalytic effect toward HER, OER, and overall water splitting in alkaline medium. Remarkably, CoS x /Ni 3 S 2 @NF showed catalytic activity comparable with that of benchmarking electrocatalysts Pt/C and RuO 2 . For CoS x /Ni 3 S 2 @NF, overpotentials of 204 and 280 mV were required to achieve current densities of 10 and 20 mA cm –2 for HER and OER, respectively, in 1.0 M KOH solution. A two-electrode system was formulated for overall water splitting reaction, which showed current densities of 10 and 50 mA cm –2 at 1.572 and 1.684 V, respectively. The prepared catalyst exhibited excellent durability in HER and OER catalyzing conditions and also in overall water splitting operation. Therefore, CoS x /Ni 3 S 2 @NF could be a promising noble-metal-free electrocatalyst for overall water splitting application.

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Metadata

Authors
Shit, S., Chhetri, S., Jang, W., Murmu, N. C., Koo, H., Samanta, P., & Kuila, T.
Venue
ACS Applied Materials & Interfaces
Published
2018-07-25
Volume
10
Issue
33
Pages
27712-27722
ISSN
  • 1944-8244 (ISSN-L)
  • 1944-8252
OpenAlex
W2883061945
Cited by
357
References
58
FWCI
8.26
Type
journal article
Language
en
Open access
closed

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