Nanoporous ultra-high-entropy alloys containing fourteen elements for water splitting electrocatalysis

被引：135

作者：

Cai, Ze-Xing ^{[1
]}

Goou, Hiromi ^{[1
]}

Ito, Yoshikazu ^{[2
]}

Tokunaga, Tomoharu ^{[3
]}

Miyauchi, Masahiro ^{[4
]}

Abe, Hideki ^{[5
]}

Fujita, Takeshi ^{[1
]}

机构：

[1] Kochi Univ Technol, Sch Environm Sci & Engn, 185 Miyanokuchi,Tosayamada, Kochi 7828502, Japan

[2] Univ Tsukuba, Grad Sch Pure & Appl Sci, Inst Appl Phys, Tsukuba, Ibaraki 3058573, Japan

[3] Nagoya Univ, Inst Mat & Syst Sustainabil, Nagoya, Aichi 4648603, Japan

[4] Tokyo Inst Technol, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528552, Japan

[5] Natl Inst Mat Sci, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

来源：

CHEMICAL SCIENCE | 2021年 / 12卷 / 34期

关键词：

EFFICIENT ELECTROCATALYSTS; STABLE ELECTROCATALYST; EVOLUTION REACTION; SURFACE-AREA; OXYGEN; FABRICATION; IRO2-TIO2; PLATINUM;

D O I：

10.1039/d1sc01981c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

High-entropy alloys (HEAs) are near-equimolar alloys comprising five or more elements. In recent years, catalysis using HEAs has attracted considerable attention across various fields. Herein, we demonstrate the facile synthesis of nanoporous ultra-high-entropy alloys (np-UHEAs) with hierarchical porosity via dealloying. These np-UHEAs contain up to 14 elements, namely, Al, Ag, Au, Co, Cu, Fe, Ir, Mo, Ni, Pd, Pt, Rh, Ru, and Ti. Furthermore, they exhibit high catalytic activities and electrochemical stabilities in the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in acidic media, superior to that of commercial Pt/graphene and IrO2 catalysts. Our results offer valuable insights for the selection of elements as catalysts for various applications.

引用

页码：11306 / 11315

页数：11

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