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Direct electrodeposition ofNi-Co-Son carbon paper as an efficient cathode for anion exchange membrane water electrolysers

Authors
Guo, WenwuKim, JunhyeongKim, HyunkiAhn, Sang Hyun
Issue Date
Feb-2021
Publisher
WILEY
Keywords
anion exchange membrane water electrolyser; electrodeposition; hydrogen evolution reaction; self-supported electrode; water electrolysis
Citation
INTERNATIONAL JOURNAL OF ENERGY RESEARCH, v.45, no.2, pp 1918 - 1931
Pages
14
Journal Title
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
Volume
45
Number
2
Start Page
1918
End Page
1931
URI
https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/43436
DOI
10.1002/er.5875
ISSN
0363-907X
1099-114X
Abstract
The development of an efficient water electrolyser is essential for sustainable hydrogen production; however, its application remains limited by the insufficient performance of the electrode. Herein, we report a rapid, simple, and cost-effective fabrication of an Ni-Co-S cathode for the hydrogen evolution reaction (HER), which is directly usable for an anion exchange membrane water electrolyser (AEMWE). The Ni-Co-S electrocatalysts are prepared on a carbon paper (CP) substrate by a one-step electrodeposition method by controlling deposition parameters such as the deposition potential, time, and electrolyte composition. The optimized Ni-Co-S/CP electrode demonstrates a high HER activity with an overpotential of 91 mV at -10 mA/cm(2)in 1.0 M KOH. An AEMWE single cell employing the Ni-Co-S/CP cathode coupled with a commercial IrO2/CP anode exhibits a current density of 1.7 A/cm(2)at 2.4 V-cell, which is higher than that of an AEMWE single cell with a commercial Pt/C/CP cathode; this is attributable to the enhancement of the electron and reactant/product transfer via appropriate cathode design.
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공과대학 (화학공학과)
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