Detailed Information

Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

Carbon-encapsulated NiFe nanoparticles as a bifunctional electrocatalyst for high-efficiency overall water splitting

Authors
Park, Sung-WooKim, InhaOh, Seung-IkKim, Jae-ChanKim, Dong-Wan
Issue Date
10월-2018
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Keywords
NiFe nanoparticles; Electrical explosion of wire; Carbon-encapsulating; Bifunctional electrocatalysts; Water splitting
Citation
JOURNAL OF CATALYSIS, v.366, pp.266 - 274
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF CATALYSIS
Volume
366
Start Page
266
End Page
274
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/72645
DOI
10.1016/j.jcat.2018.08.016
ISSN
0021-9517
Abstract
The use of non-noble metal-based electrocatalysts to achieve highly efficient and cost-effective water splitting has encountered major challenges, particularly with respect to catalytic activity, stability, cost, and ease of manufacture. Herein, few carbon-layers-encapsulated NiFe nanoparticles (NiFe@C) were prepared as a simple and effective facile top-down approach when used with the electrical explosion of wire process as a bifunctional electrocatalyst to achieve higher overall water splitting efficiency. Uniformly surrounding the unique structure of NiFe nanoparticles (similar to 15 nm in diameter) by a small number of carbon layers can be accomplished via one-pot synthesis by exploding NiFe wires in an ethanol media. The simply prepared NiFe@C catalyst exhibits remarkable catalytic activity and stability in alkaline solution for both OER (oxygen evolution reaction) and HER (hydrogen evolution reaction). When bifunctional electrocatalysts are utilized as electrodes for both cathode and anode reactions in a single electrolyzer, outstanding catalytic performance was achieved with an operational voltage of 1.575 V at a current density of 10 mA cm(-2). Most importantly, the electrodes displayed superior catalytic stability in the overall water splitting reaction for 200 h. Consequently, this work proposes and evaluates this effective new strategy for the synthesis of low-cost, highly efficient and stable bifunctional electrocatalysts. (C) 2018 Elsevier Inc. All rights reserved.
Files in This Item
There are no files associated with this item.
Appears in
Collections
College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Altmetrics

Total Views & Downloads

BROWSE