Strategies for Advancing Electrodeposited Co-Based Oxygen Evolution Catalysts from Alkaline to Pure-Water Conditions

IF 8.7 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Materials Letters Pub Date : 2025-08-06 DOI:10.1021/acsmaterialslett.5c00949

Sanghwi Han, and , Jeyong Yoon*,

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Abstract

Anion exchange membrane water electrolysis (AEMWE) is a promising platform for scalable and cost-effective green hydrogen production. Extensive research efforts have focused on enhancing the oxygen evolution reaction (OER) activity from alkaline to pure-water conditions. Co-based catalysts have shown high activity and stability for OER across alkaline to near-neutral conditions, making them strong candidates for AEMWE. In addition, electrodeposition offers a simple, scalable, and low-cost method for synthesizing these catalysts with tailored properties. Despite numerous advances in enhancing catalytic performance, comprehensive guidance on tailoring these catalysts to different electrolyte environments remains limited. This study suggests the key factors affecting the activity and durability of electrodeposited Co-based OER catalysts in both KOH and pure-water media. By comparing the electrochemical behavior and catalyst synthesis strategies under these conditions, we identify performance bottlenecks and knowledge gaps and propose strategies to guide the rational design of robust Co-based catalysts for sustainable AEMWE systems.

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电沉积co基析氧催化剂从碱性到纯水的发展策略

阴离子交换膜水电解（AEMWE）是一种具有可扩展性和成本效益的绿色制氢技术。广泛的研究工作集中在提高从碱性到纯水条件下的析氧反应（OER）活性上。co基催化剂在碱性至近中性条件下对OER表现出高活性和稳定性，使其成为AEMWE的有力候选。此外，电沉积提供了一种简单、可扩展、低成本的方法来合成这些具有定制性能的催化剂。尽管在提高催化性能方面取得了许多进展，但针对不同电解质环境定制这些催化剂的综合指导仍然有限。研究了影响电沉积co基OER催化剂在KOH和纯水介质中活性和耐久性的关键因素。通过比较这些条件下的电化学行为和催化剂合成策略，我们发现了性能瓶颈和知识空白，并提出了指导可持续AEMWE系统稳健的co基催化剂的合理设计的策略。

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

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.