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超性和超性Ru载尼可双金属氧化物在所有pH范围实现了高效的进化

Mingyue Zhang¹, Yong Gao¹, Jingjing Li¹

¹Centre for Hydrogenergy, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P. R China.

Chemistry (Weinheim an der Bergstrasse, Germany)

|July 7, 2023

概括

一种新的带有的-氧化催化剂 (Ru@NiCo-BH) 通过所有pH水平的演化反应 (HER) 有效地产生. 这种无粘合剂的催化剂表现出极好的活性,对于清洁的生产至关重要.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
催化剂是一种催化剂.

背景情况:

有效的电催化剂对于通过演化反应 (HER) 产生清洁气至关重要.
在所有pH范围 (性,中性,酸性) 中有效运行的催化剂的开发仍然是一个重大挑战.
无粘合剂和超湿性质是可取的,以提高催化性能和质量转移.

研究的目的:

开发一种新的,无粘合剂的,超湿的电催化剂,用于整个pH频谱中有效的演化反应 (HER).
调查Ru-loaded NiCo双金属氧化物 (Ru@NiCo-BH) 催化剂的结构和化学特性,以及它们与HER性能的相关性.
为通用电催化剂提供简单合理的设计策略.

主要方法:

通过自发的氧化还原反应合成带有Ru的NiCo双金属氧化物 (Ru@NiCo-BH).
催化剂的表面特性,包括超性和超空恐性.
在性,中性和酸性电解质中对HER活性进行电化学评估.

主要成果:

Ru@NiCo-BH催化剂表现出超性和超空性表面,在HER过程中促进了质量转移.
在Ru-O-M (M=Ni,Co) 接口和富含电子的Ru位点的强化学相互作用导致了高的催化活性.
催化剂在电流密度为10 mA cm-2.2时,达到29 mV (性),68 mV (中性) 和80 mV (酸性) 的低超电位.

结论:

Ru@NiCo-BH催化剂在所有pH范围都表现出了显著和普遍的HER活性.
催化剂的无粘合剂性质,超湿性质和独特的接口结构是其卓越性能的关键.
这项研究为通过简单的策略设计高效的,通用的电催化剂,以促进的进化提供了宝贵的参考.

关键词:

鲁−O−M (M=Ni,Co) 接口键接口键所有的pH范围.气演化反应反应的反应一种自发的氧化还原反应.超湿性超湿性超湿性

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