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journal article·2026-02Open access

Synergistic High Entropy and Inductive Effects in Aerogels Accelerate pH‐Universal Hydrogen Evolution

Nicole L. D. Sui, Yinghao Li, Yuntong Sun, Takefumi Yoshida, Hiroko Ariga‐Miwa, Tomoya Uruga, Zhongqi Zhang, Xiaojiang Long, Guangzhao Wang, Yasuhiro Iwasawa, Jong‐Min Lee

Small· Volume 22· Issue 10
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Source abstract

Abstract

Abstract The development of electrocatalysts that function efficiently across the full pH range remains a significant challenge for the hydrogen evolution reaction (HER). Herein, this study reports a class of high‐entropy aerogel alloys with remarkable pH‐universal HER performance. The excellent electrocatalytic activity arises from the synergistic contributions of three key features: (i) a highly porous architecture that exposes abundant active sites; (ii) high‐entropy effects that promote diverse catalytic sites; and (iii) strong inductive effects that optimize hydrogen adsorption/desorption and enhance water activation at active sites. Electrochemical measurements reveal that the best‐performing X‐La (X = PtPdRuOs) aerogel achieves low overpotentials of 2.3, 28.8, and 25.3 mV at 10 mA cm −2 in 1.0 m HClO 4 , PBS, and KOH, respectively. This study presents a promising design strategy for developing HER catalysts with robust activity across diverse pH environments.
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Research context

Metals & alloysCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Advancements in Solid Oxide Fuel Cells · Ammonia Synthesis and Nitrogen Reduction

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Chemistry, Chemical Engineering and Biotechnology Nanyang Technological University Singapore

Environmental Chemistry and Materials Centre Nanyang Environment & Water Research Institute (NEWRI) Interdisciplinary Graduate Programme Nanyang Technological University Singapore

Innovation Research Center for Fuel Cells and Hydrogen The University of Electro‐Communications Chofu Tokyo Japan

Physical and Chemical Research Infrastructure Group RIKEN SPring‐8 Center RIKEN Sayo Hyogo Japan

Research & Utilization Division Japan Synchrotron Radiation Research Institute (JASRI/SPring‐8) Sayo Hyogo Japan

Key Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology of Chongqing School of Electronic Information Engineering Yangtze Normal University Chongqing China

Department of Energy Science and Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of Korea

Energy Science and Engineering Research Center Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of Korea

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