One-Pot Synthesis of NiFe Layered Double Hydroxide/Reduced Graphene Oxide Composite as an Efficient Electrocatalyst for Electrochemical and Photoelectrochemical Water Oxidation
- Authors
- Youn, Duck Hyun; Park, Yoon Bin; Kim, Jae Young; Magesh, Ganesan; Jang, Youn Jeong; Lee, Jae Sung
- Issue Date
- Oct-2015
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Nickel iron layered double hydroxide; Reduced graphene oxide; Oxygen evolution reaction; Water splitting; Electrocatalysts
- Citation
- JOURNAL OF POWER SOURCES, v.294, pp.437 - 443
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 294
- Start Page
- 437
- End Page
- 443
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/156151
- DOI
- 10.1016/j.jpowsour.2015.06.098
- ISSN
- 0378-7753
- Abstract
- As an efficient non-precious metal catalyst for oxygen evolution reaction (OER) in electrochemical and photoelectrochemical water splitting, NiFe layered double hydroxide (LDH)/reduced graphene oxide (NiFe/RGO) composite is synthesized by a simple solvothermal method in one-pot. NiFe LDHs are uniformly deposited on RGO layers of high electrical conductivity and large surface area. In electrochemical water splitting, NiFe/RGO shows superior OER performance compared to bare NiFe and reference IrO2 with a lower benchmark rho value (required overpotential to drive 10 mA cm(-2)) of 0.245 V. Furthermore, NiFe/RGO substantially increases the performance of a hematite photoanode in photoelectrochemical water oxidation, demonstrating its potential as an OER co-catalyst for photoelectrodes.
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