Carbon supported bifunctional Rh–Ni(OH)2/C nanocomposite catalysts with high electrocatalytic efficiency for alkaline hydrogen evolution reaction

Y. F. Wang; X. Luo; W. J. Lu; L. Yang; B. Huang; P. T. Li; Y. Q. Yang

doi:10.1016/j.ijhydene.2022.02.117

Carbon supported bifunctional Rh–Ni(OH)₂/C nanocomposite catalysts with high electrocatalytic efficiency for alkaline hydrogen evolution reaction

Y. F. Wang
, X. Luo
, W. J. Lu
, L. Yang
, B. Huang
, P. T. Li
, Y. Q. Yang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

6 Scopus citations

Abstract

Pt group metals display lower HER activity in alkaline solution than in acidic solution, because they are inefficient in the water dissociation step (Volmer step). Compared with Pt, the activity difference of Rh in alkaline and acidic media is much smaller. Meanwhile, Ni(OH)₂ is proved to be an effective catalyst for water dissociation. Therefore, Rh–Ni(OH)₂/C nanocomposites with different Rh:Ni(OH)₂ ratios were synthesized by a co-deposition/partial reduction method, and their microstructures as well as electrocatalytic properties were studied. The results show that Rh and Ni(OH)₂ display synergistic effect in Rh–Ni(OH)₂/C nanocomposites. The Rh–Ni(OH)₂/C nanocomposite with a molar ratio of Rh to Ni(OH)₂ of 1:1 exhibits the highest activity. It shows an overpotential of 36 mV at 10 mA cm⁻² and a Tafel slope of 32 mV dec⁻¹ for HER in alkaline media, which is superior to commercial Pt/C. In addition, the Rh–Ni(OH)₂/C (1:1) nanocomposite shows excellent durability in alkaline media as well.

Original language	English
Pages (from-to)	13674-13682
Number of pages	9
Journal	International Journal of Hydrogen Energy
Volume	47
Issue number	28
DOIs	https://doi.org/10.1016/j.ijhydene.2022.02.117
State	Published - 1 Apr 2022

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Alkali-active catalysts
Bifunctional catalysts
Hydrogen evolution reaction
Ni(OH)
Rhodium

Access to Document

10.1016/j.ijhydene.2022.02.117

Cite this

@article{812ec5e3366142d698113a0c94727487,

title = "Carbon supported bifunctional Rh–Ni(OH)2/C nanocomposite catalysts with high electrocatalytic efficiency for alkaline hydrogen evolution reaction",

abstract = "Pt group metals display lower HER activity in alkaline solution than in acidic solution, because they are inefficient in the water dissociation step (Volmer step). Compared with Pt, the activity difference of Rh in alkaline and acidic media is much smaller. Meanwhile, Ni(OH)2 is proved to be an effective catalyst for water dissociation. Therefore, Rh–Ni(OH)2/C nanocomposites with different Rh:Ni(OH)2 ratios were synthesized by a co-deposition/partial reduction method, and their microstructures as well as electrocatalytic properties were studied. The results show that Rh and Ni(OH)2 display synergistic effect in Rh–Ni(OH)2/C nanocomposites. The Rh–Ni(OH)2/C nanocomposite with a molar ratio of Rh to Ni(OH)2 of 1:1 exhibits the highest activity. It shows an overpotential of 36 mV at 10 mA cm−2 and a Tafel slope of 32 mV dec−1 for HER in alkaline media, which is superior to commercial Pt/C. In addition, the Rh–Ni(OH)2/C (1:1) nanocomposite shows excellent durability in alkaline media as well.",

keywords = "Alkali-active catalysts, Bifunctional catalysts, Hydrogen evolution reaction, Ni(OH), Rhodium",

author = "Wang, \{Y. F.\} and X. Luo and Lu, \{W. J.\} and L. Yang and B. Huang and Li, \{P. T.\} and Yang, \{Y. Q.\}",

note = "Publisher Copyright: {\textcopyright} 2022 Hydrogen Energy Publications LLC",

year = "2022",

month = apr,

day = "1",

doi = "10.1016/j.ijhydene.2022.02.117",

language = "英语",

volume = "47",

pages = "13674--13682",

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TY - JOUR

T1 - Carbon supported bifunctional Rh–Ni(OH)2/C nanocomposite catalysts with high electrocatalytic efficiency for alkaline hydrogen evolution reaction

AU - Wang, Y. F.

AU - Luo, X.

AU - Lu, W. J.

AU - Yang, L.

AU - Huang, B.

AU - Li, P. T.

AU - Yang, Y. Q.

PY - 2022/4/1

Y1 - 2022/4/1

N2 - Pt group metals display lower HER activity in alkaline solution than in acidic solution, because they are inefficient in the water dissociation step (Volmer step). Compared with Pt, the activity difference of Rh in alkaline and acidic media is much smaller. Meanwhile, Ni(OH)2 is proved to be an effective catalyst for water dissociation. Therefore, Rh–Ni(OH)2/C nanocomposites with different Rh:Ni(OH)2 ratios were synthesized by a co-deposition/partial reduction method, and their microstructures as well as electrocatalytic properties were studied. The results show that Rh and Ni(OH)2 display synergistic effect in Rh–Ni(OH)2/C nanocomposites. The Rh–Ni(OH)2/C nanocomposite with a molar ratio of Rh to Ni(OH)2 of 1:1 exhibits the highest activity. It shows an overpotential of 36 mV at 10 mA cm−2 and a Tafel slope of 32 mV dec−1 for HER in alkaline media, which is superior to commercial Pt/C. In addition, the Rh–Ni(OH)2/C (1:1) nanocomposite shows excellent durability in alkaline media as well.

AB - Pt group metals display lower HER activity in alkaline solution than in acidic solution, because they are inefficient in the water dissociation step (Volmer step). Compared with Pt, the activity difference of Rh in alkaline and acidic media is much smaller. Meanwhile, Ni(OH)2 is proved to be an effective catalyst for water dissociation. Therefore, Rh–Ni(OH)2/C nanocomposites with different Rh:Ni(OH)2 ratios were synthesized by a co-deposition/partial reduction method, and their microstructures as well as electrocatalytic properties were studied. The results show that Rh and Ni(OH)2 display synergistic effect in Rh–Ni(OH)2/C nanocomposites. The Rh–Ni(OH)2/C nanocomposite with a molar ratio of Rh to Ni(OH)2 of 1:1 exhibits the highest activity. It shows an overpotential of 36 mV at 10 mA cm−2 and a Tafel slope of 32 mV dec−1 for HER in alkaline media, which is superior to commercial Pt/C. In addition, the Rh–Ni(OH)2/C (1:1) nanocomposite shows excellent durability in alkaline media as well.

KW - Alkali-active catalysts

KW - Bifunctional catalysts

KW - Hydrogen evolution reaction

KW - Ni(OH)

KW - Rhodium

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U2 - 10.1016/j.ijhydene.2022.02.117

DO - 10.1016/j.ijhydene.2022.02.117

M3 - 文章

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SN - 0360-3199

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JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

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