High-entropy catalysts for electrochemical water-electrolysis of hydrogen evolution and oxygen evolution reactions

IF 3.1 4区工程技术 Q3 ENERGY & FUELS

Frontiers in Energy Pub Date : 2023-08-20 DOI:10.1007/s11708-023-0892-6

Simiao Sha, Riyue Ge, Ying Li, Julie M. Cairney, Rongkun Zheng, Sean Li, Bin Liu, Jiujun Zhang, Wenxian Li

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Abstract

High entropy materials (HEMs) have developed rapidly in the field of electrocatalytic water-electrolysis for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) due to their unique properties. In particular, HEM catalysts are composed of many elements. Therefore, they have rich active sites and enhanced entropy stability relative to single atoms. In this paper, the preparation strategies and applications of HEM catalysts in electrochemical water-electrolysis are reviewed to explore the stabilization of HEMs and their catalytic mechanisms as well as their application in support green hydrogen production. First, the concept and four characteristics of HEMs are introduced based on entropy and composition. Then, synthetic strategies of HEM catalysts are systematically reviewed in terms of the categories of bottom-up and top-down. The application of HEMs as catalysts for electrochemical water-electrolysis in recent years is emphatically discussed, and the mechanisms of improving the performance of electrocatalysis is expounded by combining theoretical calculation technology and ex-situ/in situ characterization experiments. Finally, the application prospect of HEMs is proposed to conquer the challenges in HEM catalyst fabrications and applications.

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用于电化学水电解氢进化和氧进化反应的高熵催化剂

高熵材料（HEM）因其独特的性质，在电催化水电解氧气进化反应（OER）和氢气进化反应（HER）领域发展迅速。特别是，HEM 催化剂由多种元素组成。因此，与单原子相比，它们具有丰富的活性位点和更强的熵稳定性。本文综述了 HEM 催化剂的制备策略和在电化学水-电解中的应用，探讨了 HEM 的稳定性、催化机理及其在支持绿色制氢中的应用。首先，介绍了基于熵和组成的 HEM 的概念和四个特征。然后，从自下而上和自上而下两方面系统地综述了 HEM 催化剂的合成策略。重点讨论了近年来 HEMs 作为电化学水电解催化剂的应用，并结合理论计算技术和原位/原位表征实验，阐述了 HEMs 提高电催化性能的机理。最后，提出了 HEMs 的应用前景，以应对 HEM 催化剂制造和应用中的挑战。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Frontiers in Energy Energy-Energy Engineering and Power Technology

CiteScore

5.90

自引率

6.90%

发文量

708

期刊介绍： Frontiers in Energy, an interdisciplinary and peer-reviewed international journal launched in January 2007, seeks to provide a rapid and unique platform for reporting the most advanced research on energy technology and strategic thinking in order to promote timely communication between researchers, scientists, engineers, and policy makers in the field of energy. Frontiers in Energy aims to be a leading peer-reviewed platform and an authoritative source of information for analyses, reviews and evaluations in energy engineering and research, with a strong focus on energy analysis, energy modelling and prediction, integrated energy systems, energy conversion and conservation, energy planning and energy on economic and policy issues. Frontiers in Energy publishes state-of-the-art review articles, original research papers and short communications by individual researchers or research groups. It is strictly peer-reviewed and accepts only original submissions in English. The scope of the journal is broad and covers all latest focus in current energy research. High-quality papers are solicited in, but are not limited to the following areas: -Fundamental energy science -Energy technology, including energy generation, conversion, storage, renewables, transport, urban design and building efficiency -Energy and the environment, including pollution control, energy efficiency and climate change -Energy economics, strategy and policy -Emerging energy issue