Hydrogel-derived honeycomb Ni₃S₄/N,P-C as an efficient oxygen evolution catalyst
The development of high-efficiency electrocatalysts with low costs for the oxygen evolution reaction (OER) is essential, but remains challenging. Herein, a new synthetic process is proposed to prepare Ni3S4 particles embedded in N,P-codoped honeycomb porous carbon aerogels (Ni3S4/N,P-HPC) through a...
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sg-ntu-dr.10356-1516242021-07-14T06:35:20Z Hydrogel-derived honeycomb Ni₃S₄/N,P-C as an efficient oxygen evolution catalyst Hu, Xuejiao Li, Tiancheng Tang, Yidan Wang, Yirong Wang, Ao Fu, Gengtao Li, Xiaodong Tang, Yawen School of Chemical and Biomedical Engineering Science::Chemistry Doping Electrochemistry The development of high-efficiency electrocatalysts with low costs for the oxygen evolution reaction (OER) is essential, but remains challenging. Herein, a new synthetic process is proposed to prepare Ni3S4 particles embedded in N,P-codoped honeycomb porous carbon aerogels (Ni3S4/N,P-HPC) through a hydrogel approach. The preparation of Ni3S4/N,P-HPC begins with the sol–gel polymerization of tripolyphosphate, chitosan, and guanidine polymer that contains metal-binding sites, allowing for the uniform incorporation of Ni ions into the gel matrix, freeze-drying, and subsequent carbonization under an inert atmosphere. This synthesis resolves difficulties in synthesizing the pure Ni3S4 phase caused by the instability of Ni3S4 at high temperature, while affording good control of the porous structure and N,P-doping of carbon aerogels. The synergy between the structural advantages of N,P-carbon aerogels (such as easily accessible active sites, high specific surface area, and excellent electron transport) and the intrinsic electrochemical properties of Ni3S4 result in the outstanding OER performance of Ni3S4/N,P-HPC, with overpotentials as low as 0.37 V at 10 mA cm−2. The work outlined herein offers a simple and effective method for the development of carbon-based electrocatalysts for renewable energy conversion. This work was financially supported by the National Natural Science Foundation of China (NSFC; nos. 21875112 and 21576139), the Natural Science Foundation of Jiangsu Province (BK20180154), the National and Local Joint Engineering Research Center of Biomedical Functional Materials, and the Priority Academic Program Development of Jiangsu Higher Education Institutions. 2021-07-14T06:35:20Z 2021-07-14T06:35:20Z 2019 Journal Article Hu, X., Li, T., Tang, Y., Wang, Y., Wang, A., Fu, G., Li, X. & Tang, Y. (2019). Hydrogel-derived honeycomb Ni₃S₄/N,P-C as an efficient oxygen evolution catalyst. Chemistry - A European Journal, 25(31), 7561-7568. https://dx.doi.org/10.1002/chem.201901063 0947-6539 0000-0003-0411-645X https://hdl.handle.net/10356/151624 10.1002/chem.201901063 30969448 2-s2.0-85065483482 31 25 7561 7568 en Chemistry - A European Journal © 2019 Wiley-VCH Verlag GmbH &Co. KGaA, Weinheim. All rights reserved. |
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Science::Chemistry Doping Electrochemistry Hu, Xuejiao Li, Tiancheng Tang, Yidan Wang, Yirong Wang, Ao Fu, Gengtao Li, Xiaodong Tang, Yawen Hydrogel-derived honeycomb Ni₃S₄/N,P-C as an efficient oxygen evolution catalyst |
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The development of high-efficiency electrocatalysts with low costs for the oxygen evolution reaction (OER) is essential, but remains challenging. Herein, a new synthetic process is proposed to prepare Ni3S4 particles embedded in N,P-codoped honeycomb porous carbon aerogels (Ni3S4/N,P-HPC) through a hydrogel approach. The preparation of Ni3S4/N,P-HPC begins with the sol–gel polymerization of tripolyphosphate, chitosan, and guanidine polymer that contains metal-binding sites, allowing for the uniform incorporation of Ni ions into the gel matrix, freeze-drying, and subsequent carbonization under an inert atmosphere. This synthesis resolves difficulties in synthesizing the pure Ni3S4 phase caused by the instability of Ni3S4 at high temperature, while affording good control of the porous structure and N,P-doping of carbon aerogels. The synergy between the structural advantages of N,P-carbon aerogels (such as easily accessible active sites, high specific surface area, and excellent electron transport) and the intrinsic electrochemical properties of Ni3S4 result in the outstanding OER performance of Ni3S4/N,P-HPC, with overpotentials as low as 0.37 V at 10 mA cm−2. The work outlined herein offers a simple and effective method for the development of carbon-based electrocatalysts for renewable energy conversion. |
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School of Chemical and Biomedical Engineering |
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School of Chemical and Biomedical Engineering Hu, Xuejiao Li, Tiancheng Tang, Yidan Wang, Yirong Wang, Ao Fu, Gengtao Li, Xiaodong Tang, Yawen |
format |
Article |
author |
Hu, Xuejiao Li, Tiancheng Tang, Yidan Wang, Yirong Wang, Ao Fu, Gengtao Li, Xiaodong Tang, Yawen |
author_sort |
Hu, Xuejiao |
title |
Hydrogel-derived honeycomb Ni₃S₄/N,P-C as an efficient oxygen evolution catalyst |
title_short |
Hydrogel-derived honeycomb Ni₃S₄/N,P-C as an efficient oxygen evolution catalyst |
title_full |
Hydrogel-derived honeycomb Ni₃S₄/N,P-C as an efficient oxygen evolution catalyst |
title_fullStr |
Hydrogel-derived honeycomb Ni₃S₄/N,P-C as an efficient oxygen evolution catalyst |
title_full_unstemmed |
Hydrogel-derived honeycomb Ni₃S₄/N,P-C as an efficient oxygen evolution catalyst |
title_sort |
hydrogel-derived honeycomb ni₃s₄/n,p-c as an efficient oxygen evolution catalyst |
publishDate |
2021 |
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https://hdl.handle.net/10356/151624 |
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1707050391102816256 |