Regulating the active species of Ni(OH)2 using CeO2: 3D CeO2/Ni(OH)2/carbon foam as an efficient electrode for the oxygen evolution reaction

Zhengqing Liu; Na Li; Hongyang Zhao; Yi Zhang; Yunhui Huang; Zongyou Yin; Yaping Du

doi:10.1039/c6sc05408k

Regulating the active species of Ni(OH)₂ using CeO₂: 3D CeO₂/Ni(OH)₂/carbon foam as an efficient electrode for the oxygen evolution reaction

Zhengqing Liu, Na Li, Hongyang Zhao, Yi Zhang, Yunhui Huang, Zongyou Yin, Yaping Du^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

162 Citations (Scopus)

Abstract

Three dimensional (3D) N, O and S doped carbon foam (NOSCF) is prepared as a substrate for in situ vertically grown Ni(OH)₂ nanosheets. As designed Ni(OH)₂/NOSCF possesses strong electrostatic interactions with OH^- ions due to many C=O groups existing in NOSCF, which can facilitate the formation of crucial NiOOH intermediates during the OER process. CeO₂ nanoparticles (NPs) of ∼3.3 nm in size are decorated on Ni(OH)₂ nanosheets to design a highly efficient CeO₂/Ni(OH)₂/NOSCF electrocatalyst for the oxygen evolution reaction (OER). The CeO₂ NP decorated Ni(OH)₂/NOSCF not only exhibits a remarkably improved OER performance with an onset potential of 240 mV, outperforming most reported non-noble metal based OER electrocatalysts, but also possesses a small Tafel slope of 57 mV dec^-1 and excellent stability under different overpotentials. The synergistic effect of producing more active species of Ni^III/IV and accelerating the charge transfer for Ni(OH)₂/NOSCF by the introduction of CeO₂ NPs is also investigated. These results demonstrate the possibility of designing energy efficient OER catalysts with the assistance of earth abundant CeO₂-based catalysts.

Original language	English
Pages (from-to)	3211-3217
Number of pages	7
Journal	Chemical Science
Volume	8
Issue number	4
DOIs	https://doi.org/10.1039/c6sc05408k
Publication status	Published - 2017

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title = "Regulating the active species of Ni(OH)2 using CeO2: 3D CeO2/Ni(OH)2/carbon foam as an efficient electrode for the oxygen evolution reaction",

abstract = "Three dimensional (3D) N, O and S doped carbon foam (NOSCF) is prepared as a substrate for in situ vertically grown Ni(OH)2 nanosheets. As designed Ni(OH)2/NOSCF possesses strong electrostatic interactions with OH- ions due to many C=O groups existing in NOSCF, which can facilitate the formation of crucial NiOOH intermediates during the OER process. CeO2 nanoparticles (NPs) of ∼3.3 nm in size are decorated on Ni(OH)2 nanosheets to design a highly efficient CeO2/Ni(OH)2/NOSCF electrocatalyst for the oxygen evolution reaction (OER). The CeO2 NP decorated Ni(OH)2/NOSCF not only exhibits a remarkably improved OER performance with an onset potential of 240 mV, outperforming most reported non-noble metal based OER electrocatalysts, but also possesses a small Tafel slope of 57 mV dec-1 and excellent stability under different overpotentials. The synergistic effect of producing more active species of NiIII/IV and accelerating the charge transfer for Ni(OH)2/NOSCF by the introduction of CeO2 NPs is also investigated. These results demonstrate the possibility of designing energy efficient OER catalysts with the assistance of earth abundant CeO2-based catalysts.",

author = "Zhengqing Liu and Na Li and Hongyang Zhao and Yi Zhang and Yunhui Huang and Zongyou Yin and Yaping Du",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

year = "2017",

doi = "10.1039/c6sc05408k",

language = "English",

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T1 - Regulating the active species of Ni(OH)2 using CeO2

T2 - 3D CeO2/Ni(OH)2/carbon foam as an efficient electrode for the oxygen evolution reaction

AU - Liu, Zhengqing

AU - Li, Na

AU - Zhao, Hongyang

AU - Zhang, Yi

AU - Huang, Yunhui

AU - Yin, Zongyou

AU - Du, Yaping

PY - 2017

Y1 - 2017

N2 - Three dimensional (3D) N, O and S doped carbon foam (NOSCF) is prepared as a substrate for in situ vertically grown Ni(OH)2 nanosheets. As designed Ni(OH)2/NOSCF possesses strong electrostatic interactions with OH- ions due to many C=O groups existing in NOSCF, which can facilitate the formation of crucial NiOOH intermediates during the OER process. CeO2 nanoparticles (NPs) of ∼3.3 nm in size are decorated on Ni(OH)2 nanosheets to design a highly efficient CeO2/Ni(OH)2/NOSCF electrocatalyst for the oxygen evolution reaction (OER). The CeO2 NP decorated Ni(OH)2/NOSCF not only exhibits a remarkably improved OER performance with an onset potential of 240 mV, outperforming most reported non-noble metal based OER electrocatalysts, but also possesses a small Tafel slope of 57 mV dec-1 and excellent stability under different overpotentials. The synergistic effect of producing more active species of NiIII/IV and accelerating the charge transfer for Ni(OH)2/NOSCF by the introduction of CeO2 NPs is also investigated. These results demonstrate the possibility of designing energy efficient OER catalysts with the assistance of earth abundant CeO2-based catalysts.

AB - Three dimensional (3D) N, O and S doped carbon foam (NOSCF) is prepared as a substrate for in situ vertically grown Ni(OH)2 nanosheets. As designed Ni(OH)2/NOSCF possesses strong electrostatic interactions with OH- ions due to many C=O groups existing in NOSCF, which can facilitate the formation of crucial NiOOH intermediates during the OER process. CeO2 nanoparticles (NPs) of ∼3.3 nm in size are decorated on Ni(OH)2 nanosheets to design a highly efficient CeO2/Ni(OH)2/NOSCF electrocatalyst for the oxygen evolution reaction (OER). The CeO2 NP decorated Ni(OH)2/NOSCF not only exhibits a remarkably improved OER performance with an onset potential of 240 mV, outperforming most reported non-noble metal based OER electrocatalysts, but also possesses a small Tafel slope of 57 mV dec-1 and excellent stability under different overpotentials. The synergistic effect of producing more active species of NiIII/IV and accelerating the charge transfer for Ni(OH)2/NOSCF by the introduction of CeO2 NPs is also investigated. These results demonstrate the possibility of designing energy efficient OER catalysts with the assistance of earth abundant CeO2-based catalysts.

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U2 - 10.1039/c6sc05408k

DO - 10.1039/c6sc05408k

M3 - Article

SN - 2041-6520

VL - 8

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JO - Chemical Science

JF - Chemical Science

IS - 4

ER -

Regulating the active species of Ni(OH)₂ using CeO₂: 3D CeO₂/Ni(OH)₂/carbon foam as an efficient electrode for the oxygen evolution reaction

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