Empowering multicomponent alloys with unique nanostructure for exceptional oxygen evolution performance through self-replenishment

IF 38.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Joule Pub Date : 2024-10-16 DOI:10.1016/j.joule.2024.06.023

Zhibin Li , Ruoyu Wu , Dabo Duan , Xiongjun Liu , Rui Li , Jing Wang , Houwen Chen , Shi-Wei Chen , Yuan Wu , Hui Wang , Suihe Jiang , Xiaobin Zhang , Zhaoping Lu

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引用次数: 0

Abstract

Oxygen evolution reaction (OER) catalysts suffer from degradation under harsh oxygen evolution conditions, especially at large current densities, which is a longstanding challenge when developing OER catalysts for industrial applications. Here, we report ultra-stable multicomponent alloys with outstanding OER performance, created by forming two-layered nanostructures in noble metal-free multicomponent alloys, which boost activity and stability simultaneously through a counterintuitive parallel-mechanism strategy. The outer multicomponent amorphous oxide layer endows compelling OER activity, while the underneath layer affords dynamic replenishment capability for sustainable performance (working stably at least 1,600 h at 500 mA cm⁻²) in alkaline electrolytes. More appealing is that the catalyst can be easily revitalized, significantly extending its service durability and reducing its cost. This finding can be applied to develop other cost-efficient catalysts with considerable potential for industrial applications, offering a design paradigm to break the activity-stability trade-off of electrocatalysts.

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利用独特的纳米结构强化多组分合金，通过自我补给实现卓越的氧进化性能

氧进化反应（OER）催化剂在苛刻的氧进化条件下会发生降解，尤其是在大电流密度下，这是开发工业应用 OER 催化剂的长期挑战。在这里，我们报告了通过在不含贵金属的多组分合金中形成双层纳米结构而产生的具有出色 OER 性能的超稳定多组分合金，这种合金通过一种反直觉的平行机制策略同时提高了活性和稳定性。外层的多组分无定形氧化物层具有极强的 OER 活性，而底层则具有动态补充能力，可在碱性电解质中持续发挥性能（在 500 mA cm-2 下至少稳定工作 1,600 小时）。更吸引人的是，催化剂可以很容易地重新焕发活力，从而大大延长其使用寿命并降低成本。这一发现可用于开发其他具有工业应用潜力的高性价比催化剂，为打破电催化剂的活性-稳定性权衡提供了一种设计范式。

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

Joule Energy-General Energy

CiteScore

53.10

自引率

2.00%

发文量

198

期刊介绍： Joule is a sister journal to Cell that focuses on research, analysis, and ideas related to sustainable energy. It aims to address the global challenge of the need for more sustainable energy solutions. Joule is a forward-looking journal that bridges disciplines and scales of energy research. It connects researchers and analysts working on scientific, technical, economic, policy, and social challenges related to sustainable energy. The journal covers a wide range of energy research, from fundamental laboratory studies on energy conversion and storage to global-level analysis. Joule aims to highlight and amplify the implications, challenges, and opportunities of novel energy research for different groups in the field.