Mesoporous High-Entropy Alloy Films

被引：0

作者：

Fu, Lei ^{[1
,2
,3
]}

Nam, Ho Ngoc ^{[3
]}

Zhou, Jun ^{[1
]}

Kang, Yunqing ^{[3
,4
]}

Wang, Kaiteng ^{[1
]}

Zhou, Zilin ^{[1
]}

Zhao, Yingji ^{[3
]}

Zhu, Liyang ^{[3
]}

Nandan, Ravi ^{[2
]}

Eguchi, Miharu ^{[5
,6
]}

Phung, Quan Manh ^{[7
,8
]}

Yokoshima, Tokihiko ^{[3
]}

Wu, Kai ^{[1
]}

Yamauchi, Yusuke ^{[3
,6
,9
]}

机构：

[1] Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an,710049, China

[2] Research Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Ibaraki, Tsukuba,305-0044, Japan

[3] Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Nagoya,464-8603, Japan

[4] Nanozyme Laboratory in Zhongyuan, Henan Academy of Innovations in Medical Science, Henan, Zhengzhou,451163, China

[5] Faculty of Science and Engineering, Waseda University, Tokyo, Shinjuku,169-8555, Japan

[6] Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensl, Brisbane,QLD,4072, Australia

[7] Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Nagoya,464-8602, Japan

[8] Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya,464-8601, Japan

[9] Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul,03722, Korea, Republic of

来源：

ACS Nano | 2024年 / 18卷 / 40期

关键词：

High-entropy alloys (HEAs) are promising materials for electrochemical energy applications due to their excellent catalytic performance and durability. However; the controlled synthesis of HEAs with a well-defined structure and a uniform composition distribution remains a challenge. Herein; a soft template-assisted electrodeposition technique is used to fabricate a mesoporous HEA (m-HEA) film with a uniform composition distribution of Pt; Pd; Rh; Ru; and Cu; providing a suitable platform for investigating structure-performance relationships. Electrochemical deposition enables the uniform nucleation and grain growth of m-HEA; which can be deposited onto many conductive substrates. The m-HEA film exhibits an enhanced mass activity of 4.2 A mgPt-1 toward methanol oxidation reaction (MOR); which is 7.2-fold and 35-fold higher than a mesoporous Pt film and commercial Pt black; respectively. Experimental characterization indicates that structural defects and a low work function of the m-HEA film offer sufficient active sites and fast electron-transfer kinetics. Furthermore; theoretical calculations demonstrate that the variety of favorable adsorption sites on multimetallic elements of HEA reduces the barriers for dehydration pathways and *CO species removal; ensuring optimal performance for complex MOR reactions. This work provides an effective approach to designing a variety of HEA catalysts with well-controlled porous structures for targeted electrocatalytic applications. © 2024 American Chemical Society;

D O I：

10.1021/acsnano.4c08929

中图分类号：

学科分类号：

摘要：

引用

页码：27617 / 27629

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