Highly Active and Stable Al-Doped NiFe Self-Supported Oxygen Evolution Reaction Electrode for Alkaline Water Electrolysis

IF 13.1 1区化学 Q1 CHEMISTRY, PHYSICAL ACS Catalysis Pub Date : 2025-01-03 DOI:10.1021/acscatal.4c04393

Byung-Jo Lee, Sang-Mun Jung, Gwonho Yu, Hyun-Yup Kim, Jaesub Kwon, Kyu-Su Kim, Jaeik Kwak, Wooseok Lee, Dong Hyeon Mok, Seoin Back, Yong-Tae Kim

{"title":"Highly Active and Stable Al-Doped NiFe Self-Supported Oxygen Evolution Reaction Electrode for Alkaline Water Electrolysis","authors":"Byung-Jo Lee, Sang-Mun Jung, Gwonho Yu, Hyun-Yup Kim, Jaesub Kwon, Kyu-Su Kim, Jaeik Kwak, Wooseok Lee, Dong Hyeon Mok, Seoin Back, Yong-Tae Kim","doi":"10.1021/acscatal.4c04393","DOIUrl":null,"url":null,"abstract":"Alkaline water electrolysis (AWE), a predominant technology for large-scale industrial hydrogen production, faces limitations in commercialization owing to the inadequate catalytic activity and stability of oxygen evolution reaction (OER) electrocatalysts. This study introduces a NiFeAl self-supported electrode characterized by high activity and stability for the OER and outlines a rational design strategy for NiFe (oxy)hydroxide-based self-supported electrodes. The introduction of Al, a ternary dopant with relatively low electronegativity and a small ionic radius, into the NiFe electrode effectively controls the adsorption energy of O-intermediates and facilitates the deprotonation of adsorbed OH*, thereby accelerating the OER. Remarkably, the NiFeAl self-supported electrode demonstrates approximately 50% enhanced operational activity (0.71 A cm<sup>–2</sup> at 1.8 V) compared to NiFe alongside exceptional stability (>72 h at 0.6 A cm<sup>–2</sup>) in OER within an AWE single cell. These findings highlight the significant potential of the NiFeAl electrode for application in AWE for efficient, large-scale hydrogen production.","PeriodicalId":9,"journal":{"name":"ACS Catalysis ","volume":"18 1","pages":""},"PeriodicalIF":13.1000,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Catalysis ","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1021/acscatal.4c04393","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Alkaline water electrolysis (AWE), a predominant technology for large-scale industrial hydrogen production, faces limitations in commercialization owing to the inadequate catalytic activity and stability of oxygen evolution reaction (OER) electrocatalysts. This study introduces a NiFeAl self-supported electrode characterized by high activity and stability for the OER and outlines a rational design strategy for NiFe (oxy)hydroxide-based self-supported electrodes. The introduction of Al, a ternary dopant with relatively low electronegativity and a small ionic radius, into the NiFe electrode effectively controls the adsorption energy of O-intermediates and facilitates the deprotonation of adsorbed OH*, thereby accelerating the OER. Remarkably, the NiFeAl self-supported electrode demonstrates approximately 50% enhanced operational activity (0.71 A cm^–2 at 1.8 V) compared to NiFe alongside exceptional stability (>72 h at 0.6 A cm^–2) in OER within an AWE single cell. These findings highlight the significant potential of the NiFeAl electrode for application in AWE for efficient, large-scale hydrogen production.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

碱性水电解用高活性稳定掺铝NiFe自支撑析氧电极

碱水电解（AWE）是大规模工业制氢的主要技术，但由于析氧反应（OER）电催化剂的催化活性和稳定性不足，在商业化方面受到限制。本研究介绍了一种具有高活性和稳定性的NiFe（氧）氢氧化物自支撑电极，并概述了NiFe（氧）氢氧化物自支撑电极的合理设计策略。Al是一种电负性相对较低、离子半径较小的三元掺杂剂，在NiFe电极中引入Al可以有效控制o -中间体的吸附能，促进吸附OH*的去质子化，从而加速OER。值得注意的是，与NiFe相比，NiFeAl自支撑电极的工作活性提高了约50% (1.8 V时0.71 A cm-2)，并且在AWE单个电池的OER中具有出色的稳定性（0.6 A cm-2时72小时）。这些发现突出了NiFeAl电极在AWE中高效、大规模制氢应用的巨大潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

ACS Catalysis CHEMISTRY, PHYSICAL-

CiteScore

20.80

自引率

6.20%

发文量

1253

审稿时长

1.5 months

期刊介绍： ACS Catalysis is an esteemed journal that publishes original research in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. It offers broad coverage across diverse areas such as life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels. The scope of the journal is to showcase innovative work in various aspects of catalysis. This includes new reactions and novel synthetic approaches utilizing known catalysts, the discovery or modification of new catalysts, elucidation of catalytic mechanisms through cutting-edge investigations, practical enhancements of existing processes, as well as conceptual advances in the field. Contributions to ACS Catalysis can encompass both experimental and theoretical research focused on catalytic molecules, macromolecules, and materials that exhibit catalytic turnover.