Qianyun Bai, Da Liu, Xiaoxiao Yan, Peifang Guo, Xingyu Ding, Kang Xiang, Xin Tu, Yanhui Guo* and Renbing Wu*,
{"title":"Oxygen Vacancy-Enriched Amorphous Transition Metal Ternary Oxides toward Highly Efficient Oxygen Evolution Reaction","authors":"Qianyun Bai, Da Liu, Xiaoxiao Yan, Peifang Guo, Xingyu Ding, Kang Xiang, Xin Tu, Yanhui Guo* and Renbing Wu*, ","doi":"10.1021/acsmaterialslett.4c00716","DOIUrl":null,"url":null,"abstract":"<p >Developing highly efficient oxygen evolution reaction (OER) electrocatalysts based on earth-abundant elements is critical to improve the efficiency of water electrolysis, but it remains a challenge. Herein, an amorphous ternary oxides composites FeNiCoO<sub><i>x</i></sub>/CoO<sub><i>x</i></sub> with rich oxygen vacancies are developed through a low-cost wet chemical deposition strategy toward this challenge. Benefiting from the synergistic effect of multimetal atom interaction and high exposure of active sites caused by oxygen vacancies and amorphous structure, the as-developed FeNiCoO<sub><i>x</i></sub>/CoO<sub><i>x</i></sub> electrocatalyst exhibits an exceptional catalytic performance with a low overpotential of only 221 mV at a current density of 100 mA cm<sup>–2</sup> and negligible performance degradation over 240 h. Furthermore, the FeNiCoO<sub><i>x</i></sub>/CoO<sub><i>x</i></sub>-assembled anion exchange membrane water electrolyzer (AEMWE) can achieve a high current density of 1 A cm<sup>–2</sup> at a low voltage of 1.765 V, demonstrating its great potential for practical application.</p>","PeriodicalId":19,"journal":{"name":"ACS Materials Letters","volume":null,"pages":null},"PeriodicalIF":9.6000,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Materials Letters","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsmaterialslett.4c00716","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Developing highly efficient oxygen evolution reaction (OER) electrocatalysts based on earth-abundant elements is critical to improve the efficiency of water electrolysis, but it remains a challenge. Herein, an amorphous ternary oxides composites FeNiCoOx/CoOx with rich oxygen vacancies are developed through a low-cost wet chemical deposition strategy toward this challenge. Benefiting from the synergistic effect of multimetal atom interaction and high exposure of active sites caused by oxygen vacancies and amorphous structure, the as-developed FeNiCoOx/CoOx electrocatalyst exhibits an exceptional catalytic performance with a low overpotential of only 221 mV at a current density of 100 mA cm–2 and negligible performance degradation over 240 h. Furthermore, the FeNiCoOx/CoOx-assembled anion exchange membrane water electrolyzer (AEMWE) can achieve a high current density of 1 A cm–2 at a low voltage of 1.765 V, demonstrating its great potential for practical application.
期刊介绍:
ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.