Designed formation of double‐shelled ni–fe layered‐double‐hydroxide nanocages for efficient oxygen evolution reaction

Delicate design of nanostructures for oxygen‐evolution electrocatalysts is an important strategy for accelerating the reaction kinetics of water splitting. In this work, Ni–Fe layered‐double‐hydroxide (LDH) nanocages with tunable shells are synthesized via a facile one‐pot self‐templating method. Th...

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Main Authors: Zhang, Jintao, Yu, Le, Chen, Ye, Lu, Xue Feng, Gao, Shuyan, Lou, David Xiong Wen
Other Authors: School of Chemical and Biomedical Engineering
Format: Journal Article
Language:English
Published: 2020
Subjects:
Online Access:https://hdl.handle.net/10356/138574
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author Zhang, Jintao
Yu, Le
Chen, Ye
Lu, Xue Feng
Gao, Shuyan
Lou, David Xiong Wen
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Zhang, Jintao
Yu, Le
Chen, Ye
Lu, Xue Feng
Gao, Shuyan
Lou, David Xiong Wen
author_sort Zhang, Jintao
collection NTU
description Delicate design of nanostructures for oxygen‐evolution electrocatalysts is an important strategy for accelerating the reaction kinetics of water splitting. In this work, Ni–Fe layered‐double‐hydroxide (LDH) nanocages with tunable shells are synthesized via a facile one‐pot self‐templating method. The number of shells can be precisely controlled by regulating the template etching at the interface. Benefiting from the double‐shelled structure with large electroactive surface area and optimized chemical composition, the hierarchical Ni–Fe LDH nanocages exhibit appealing electrocatalytic activity for the oxygen evolution reaction in alkaline electrolyte. Particularly, double‐shelled Ni–Fe LDH nanocages can achieve a current density of 20 mA cm−2 at a low overpotential of 246 mV with excellent stability.
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spelling ntu-10356/1385742023-12-29T06:53:44Z Designed formation of double‐shelled ni–fe layered‐double‐hydroxide nanocages for efficient oxygen evolution reaction Zhang, Jintao Yu, Le Chen, Ye Lu, Xue Feng Gao, Shuyan Lou, David Xiong Wen School of Chemical and Biomedical Engineering Engineering::Materials Engineering::Chemical engineering Ni-Fe Layered Double Hydroxides Delicate design of nanostructures for oxygen‐evolution electrocatalysts is an important strategy for accelerating the reaction kinetics of water splitting. In this work, Ni–Fe layered‐double‐hydroxide (LDH) nanocages with tunable shells are synthesized via a facile one‐pot self‐templating method. The number of shells can be precisely controlled by regulating the template etching at the interface. Benefiting from the double‐shelled structure with large electroactive surface area and optimized chemical composition, the hierarchical Ni–Fe LDH nanocages exhibit appealing electrocatalytic activity for the oxygen evolution reaction in alkaline electrolyte. Particularly, double‐shelled Ni–Fe LDH nanocages can achieve a current density of 20 mA cm−2 at a low overpotential of 246 mV with excellent stability. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Accepted version 2020-05-08T08:34:02Z 2020-05-08T08:34:02Z 2020 Journal Article Zhang, J., Yu, L., Chen, Y., Lu, X. F., Gao, S., & Lou, D. X. W. (2020). Designed formation of double‐shelled Ni–Fe layered‐double‐hydroxide nanocages for efficient oxygen evolution reaction. Advanced Materials, 32(16), 1906432-. doi:10.1002/adma.201906432 0935-9648 https://hdl.handle.net/10356/138574 10.1002/adma.201906432 32134141 2-s2.0-85080870810 16 32 1906432 (1 of 6) 1906432 (6 of 6) en Advanced Materials © 2020 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. This paper was published in Advanced Materials and is made available with permission of WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. application/pdf
spellingShingle Engineering::Materials
Engineering::Chemical engineering
Ni-Fe
Layered Double Hydroxides
Zhang, Jintao
Yu, Le
Chen, Ye
Lu, Xue Feng
Gao, Shuyan
Lou, David Xiong Wen
Designed formation of double‐shelled ni–fe layered‐double‐hydroxide nanocages for efficient oxygen evolution reaction
title Designed formation of double‐shelled ni–fe layered‐double‐hydroxide nanocages for efficient oxygen evolution reaction
title_full Designed formation of double‐shelled ni–fe layered‐double‐hydroxide nanocages for efficient oxygen evolution reaction
title_fullStr Designed formation of double‐shelled ni–fe layered‐double‐hydroxide nanocages for efficient oxygen evolution reaction
title_full_unstemmed Designed formation of double‐shelled ni–fe layered‐double‐hydroxide nanocages for efficient oxygen evolution reaction
title_short Designed formation of double‐shelled ni–fe layered‐double‐hydroxide nanocages for efficient oxygen evolution reaction
title_sort designed formation of double shelled ni fe layered double hydroxide nanocages for efficient oxygen evolution reaction
topic Engineering::Materials
Engineering::Chemical engineering
Ni-Fe
Layered Double Hydroxides
url https://hdl.handle.net/10356/138574
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