NiFe layered double hydroxide nanosheet arrays for efficient oxygen evolution reaction in alkaline media

Exploring efficient oxygen evolution reaction (OER) catalysts synthesized from low-cost and earth-abundant elements are crucial to the progression of water splitting. In this paper, NiFe layered double hydroxide (LDH) nanosheets were grown on Ni foam (NF) through a straightforward hydrothermal metho...

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Main Authors: Huang, Feng, Yao, Bingqing, Huang, Yizhong, Dong, Zhili
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2022
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Online Access:https://hdl.handle.net/10356/161950
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1619502022-09-27T05:02:40Z NiFe layered double hydroxide nanosheet arrays for efficient oxygen evolution reaction in alkaline media Huang, Feng Yao, Bingqing Huang, Yizhong Dong, Zhili School of Materials Science and Engineering Engineering::Materials NiFe Layered Double Hydroxide Nanosheet Array Exploring efficient oxygen evolution reaction (OER) catalysts synthesized from low-cost and earth-abundant elements are crucial to the progression of water splitting. In this paper, NiFe layered double hydroxide (LDH) nanosheets were grown on Ni foam (NF) through a straightforward hydrothermal method. The Fe doping effects were systematically investigated by controlling Ni/Fe ratios and Fe valence states, and the in-depth influence mechanisms were discussed. The results indicate that, through controlling structure morphology and enhancing Ni2+ oxidation, NiFeIII(1:1)-LDH displays the best and outstanding OER performance, with a low over potential of 382 mV at 50 mA cm−2, a low Tafel slope of 31.1 mVdec−1 and only 20 mV increase after 10 h continuous test at 50 mA cm−2. To our knowledge, this is one of the best OER electrocatalysts in alkaline media to date. This work provides a facile and novel strategy for the fabrication of bimetallic LDH catalysts with desired structures and compositions. This work was supported by National Science Foundation of China [51501136]; the State Key Laboratory of Solidification Processing in NWPU [SKLSP201736]; the State Key Laboratory of Material Processing and Die & Mould Technology in HUST [P2016-06] and the State Scholarship Fund [201806955084] from China Scholarship Council. 2022-09-27T05:02:40Z 2022-09-27T05:02:40Z 2022 Journal Article Huang, F., Yao, B., Huang, Y. & Dong, Z. (2022). NiFe layered double hydroxide nanosheet arrays for efficient oxygen evolution reaction in alkaline media. International Journal of Hydrogen Energy, 47(51), 21725-21735. https://dx.doi.org/10.1016/j.ijhydene.2022.04.296 0360-3199 https://hdl.handle.net/10356/161950 10.1016/j.ijhydene.2022.04.296 2-s2.0-85131561765 51 47 21725 21735 en International Journal of Hydrogen Energy © 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials
NiFe Layered Double Hydroxide
Nanosheet Array
spellingShingle Engineering::Materials
NiFe Layered Double Hydroxide
Nanosheet Array
Huang, Feng
Yao, Bingqing
Huang, Yizhong
Dong, Zhili
NiFe layered double hydroxide nanosheet arrays for efficient oxygen evolution reaction in alkaline media
description Exploring efficient oxygen evolution reaction (OER) catalysts synthesized from low-cost and earth-abundant elements are crucial to the progression of water splitting. In this paper, NiFe layered double hydroxide (LDH) nanosheets were grown on Ni foam (NF) through a straightforward hydrothermal method. The Fe doping effects were systematically investigated by controlling Ni/Fe ratios and Fe valence states, and the in-depth influence mechanisms were discussed. The results indicate that, through controlling structure morphology and enhancing Ni2+ oxidation, NiFeIII(1:1)-LDH displays the best and outstanding OER performance, with a low over potential of 382 mV at 50 mA cm−2, a low Tafel slope of 31.1 mVdec−1 and only 20 mV increase after 10 h continuous test at 50 mA cm−2. To our knowledge, this is one of the best OER electrocatalysts in alkaline media to date. This work provides a facile and novel strategy for the fabrication of bimetallic LDH catalysts with desired structures and compositions.
author2 School of Materials Science and Engineering
author_facet School of Materials Science and Engineering
Huang, Feng
Yao, Bingqing
Huang, Yizhong
Dong, Zhili
format Article
author Huang, Feng
Yao, Bingqing
Huang, Yizhong
Dong, Zhili
author_sort Huang, Feng
title NiFe layered double hydroxide nanosheet arrays for efficient oxygen evolution reaction in alkaline media
title_short NiFe layered double hydroxide nanosheet arrays for efficient oxygen evolution reaction in alkaline media
title_full NiFe layered double hydroxide nanosheet arrays for efficient oxygen evolution reaction in alkaline media
title_fullStr NiFe layered double hydroxide nanosheet arrays for efficient oxygen evolution reaction in alkaline media
title_full_unstemmed NiFe layered double hydroxide nanosheet arrays for efficient oxygen evolution reaction in alkaline media
title_sort nife layered double hydroxide nanosheet arrays for efficient oxygen evolution reaction in alkaline media
publishDate 2022
url https://hdl.handle.net/10356/161950
_version_ 1745574640025075712