Surpassing Pt hydrogen production from {200} facet-riched polyhedral Rh2P nanoparticles by one-step synthesis

Hongqiang Xin; Lan Sun; Yiwei Zhao; Zhengfei Dai; Qiaomei Luo; Shengwu Guo; Danyang Li; Ya Chen; Naoki Ogiwara; Hiroshi Kitagawa; Bo Huang; Fei Ma

doi:10.1016/j.apcatb.2023.122645

Surpassing Pt hydrogen production from {200} facet-riched polyhedral Rh₂P nanoparticles by one-step synthesis

Hongqiang Xin
, Lan Sun
, Yiwei Zhao
, Zhengfei Dai
, Qiaomei Luo
, Shengwu Guo
, Danyang Li
, Ya Chen
, Naoki Ogiwara
, Hiroshi Kitagawa
, Bo Huang
, Fei Ma

School of Materials Science and Engineering

Xi'an Jiaotong University
Kyoto University

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

9 Scopus citations

Abstract

The efficient water electrolysis catalyst is prominently important and urgent to forward the widespread applications of hydrogen energy. In this work, polyhedral-morphology controlled rhodium phosphide (Rh₂P) nanoparticles are synthesized by one-step high temperature pyrolysis under Ar atmosphere at 90 Pa. By analyzing the morphologies of Rh₂P, the crystal facets of {200}, {220} and {111} are dominant in the 26-facet polyhedrons, and {200} facets account for 58% of the total surface area of polyhedral 26-facet shapes. The overpotentials of polyhedral Rh₂P NPs are 12.6 mV and 10.5 mV at 10 mA m⁻² in 0.5 M H₂SO₄ and 1 M KOH electrolytes, even lower than those of Pt/C. Theoretical calculations indicate that {200} facets of Rh₂P NPs have the highest catalytic activity among {200}, {111}, and {220}, with the lowest hydrogen adsorption free energy. The substantial exposure of {200} facets is beneficial to the high catalytic activity of Rh₂P NPs.

Original language	English
Article number	122645
Journal	Applied Catalysis B: Environmental
Volume	330
DOIs	https://doi.org/10.1016/j.apcatb.2023.122645
State	Published - 5 Aug 2023

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Active facet
Density functional theory calculation
Hydrogen evolution reaction
Morphology control
Rhodium phosphide

Access to Document

10.1016/j.apcatb.2023.122645

Cite this

@article{5427a8934cb74d5bb8e728a7be46e1b7,

title = "Surpassing Pt hydrogen production from \{200\} facet-riched polyhedral Rh2P nanoparticles by one-step synthesis",

abstract = "The efficient water electrolysis catalyst is prominently important and urgent to forward the widespread applications of hydrogen energy. In this work, polyhedral-morphology controlled rhodium phosphide (Rh2P) nanoparticles are synthesized by one-step high temperature pyrolysis under Ar atmosphere at 90 Pa. By analyzing the morphologies of Rh2P, the crystal facets of \{200\}, \{220\} and \{111\} are dominant in the 26-facet polyhedrons, and \{200\} facets account for 58\% of the total surface area of polyhedral 26-facet shapes. The overpotentials of polyhedral Rh2P NPs are 12.6 mV and 10.5 mV at 10 mA m−2 in 0.5 M H2SO4 and 1 M KOH electrolytes, even lower than those of Pt/C. Theoretical calculations indicate that \{200\} facets of Rh2P NPs have the highest catalytic activity among \{200\}, \{111\}, and \{220\}, with the lowest hydrogen adsorption free energy. The substantial exposure of \{200\} facets is beneficial to the high catalytic activity of Rh2P NPs.",

keywords = "Active facet, Density functional theory calculation, Hydrogen evolution reaction, Morphology control, Rhodium phosphide",

author = "Hongqiang Xin and Lan Sun and Yiwei Zhao and Zhengfei Dai and Qiaomei Luo and Shengwu Guo and Danyang Li and Ya Chen and Naoki Ogiwara and Hiroshi Kitagawa and Bo Huang and Fei Ma",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

month = aug,

day = "5",

doi = "10.1016/j.apcatb.2023.122645",

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T1 - Surpassing Pt hydrogen production from {200} facet-riched polyhedral Rh2P nanoparticles by one-step synthesis

AU - Xin, Hongqiang

AU - Sun, Lan

AU - Zhao, Yiwei

AU - Dai, Zhengfei

AU - Luo, Qiaomei

AU - Guo, Shengwu

AU - Li, Danyang

AU - Chen, Ya

AU - Ogiwara, Naoki

AU - Kitagawa, Hiroshi

AU - Huang, Bo

AU - Ma, Fei

PY - 2023/8/5

Y1 - 2023/8/5

N2 - The efficient water electrolysis catalyst is prominently important and urgent to forward the widespread applications of hydrogen energy. In this work, polyhedral-morphology controlled rhodium phosphide (Rh2P) nanoparticles are synthesized by one-step high temperature pyrolysis under Ar atmosphere at 90 Pa. By analyzing the morphologies of Rh2P, the crystal facets of {200}, {220} and {111} are dominant in the 26-facet polyhedrons, and {200} facets account for 58% of the total surface area of polyhedral 26-facet shapes. The overpotentials of polyhedral Rh2P NPs are 12.6 mV and 10.5 mV at 10 mA m−2 in 0.5 M H2SO4 and 1 M KOH electrolytes, even lower than those of Pt/C. Theoretical calculations indicate that {200} facets of Rh2P NPs have the highest catalytic activity among {200}, {111}, and {220}, with the lowest hydrogen adsorption free energy. The substantial exposure of {200} facets is beneficial to the high catalytic activity of Rh2P NPs.

AB - The efficient water electrolysis catalyst is prominently important and urgent to forward the widespread applications of hydrogen energy. In this work, polyhedral-morphology controlled rhodium phosphide (Rh2P) nanoparticles are synthesized by one-step high temperature pyrolysis under Ar atmosphere at 90 Pa. By analyzing the morphologies of Rh2P, the crystal facets of {200}, {220} and {111} are dominant in the 26-facet polyhedrons, and {200} facets account for 58% of the total surface area of polyhedral 26-facet shapes. The overpotentials of polyhedral Rh2P NPs are 12.6 mV and 10.5 mV at 10 mA m−2 in 0.5 M H2SO4 and 1 M KOH electrolytes, even lower than those of Pt/C. Theoretical calculations indicate that {200} facets of Rh2P NPs have the highest catalytic activity among {200}, {111}, and {220}, with the lowest hydrogen adsorption free energy. The substantial exposure of {200} facets is beneficial to the high catalytic activity of Rh2P NPs.

KW - Active facet

KW - Density functional theory calculation

KW - Hydrogen evolution reaction

KW - Morphology control

KW - Rhodium phosphide

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U2 - 10.1016/j.apcatb.2023.122645

DO - 10.1016/j.apcatb.2023.122645

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