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

材料学院

Northwestern Polytechnical University Xian

科研成果: 期刊稿件 › 文章 › 同行评审

6 引用（Scopus）

摘要

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.

源语言	英语
页（从-至）	13674-13682
页数	9
期刊	International Journal of Hydrogen Energy
卷	47
期	28
DOI	https://doi.org/10.1016/j.ijhydene.2022.02.117
出版状态	已出版 - 1 4月 2022

联合国可持续发展目标

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10.1016/j.ijhydene.2022.02.117

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@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

AN - SCOPUS:85125738359

SN - 0360-3199

VL - 47

SP - 13674

EP - 13682

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 28

ER -

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

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