Constructing Ni-O-Zr interfaces to induce oxygen vacancies with enhanced metal-carrier interactions for robust hydrogen storage in magnesium hydride

被引：0

作者：

Wu, Yake ^{[1
]}

Li, Suning ^{[3
]}

Zhang, Jiawen ^{[1
]}

Li, Shuai ^{[1
]}

Zhong, Tao ^{[1
]}

Zhu, Yanlong ^{[1
]}

Li, Hong ^{[2
]}

Zhang, Liuting ^{[1
]}

机构：

[1] Jiangsu Univ Sci & Technol, Sch Energy & Power, Zhenjiang 212003, Peoples R China

[2] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

[3] Yanshan Univ, Sch Vehicle & Energy, 438 West Hebei Ave, Qinhuangdao 066004, Hebei, Peoples R China

来源：

FUEL | 2025年 / 389卷

关键词：

Hydrogen storage; Magnesium hydride; Ni-O-Zr interface; Oxygen vacancy; Metal-carrier catalysis; NANOPARTICLES; KINETICS;

D O I：

10.1016/j.fuel.2025.134653

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

By constructing Ni-O-Zr interfaces, oxygen vacancies were generated and the interaction between the metal and the support in the catalyst was significantly enhanced. This synergy between Ni0 and oxygen vacancies greatly boosted the catalytic activity of Ni50/ZrO2 in the hydrogen storage system. Experimental tests showed that the MgH2 + 10 wt%Ni50/ZrO2 composite had a reduced initial hydrogen desorption temperature of 194.5 degrees C and released 6.30 wt%H2 within 10 min at 265 degrees C. Notably, this composite exhibited excellent low-temperature hydrogen absorption kinetics, initiating absorption at 29 degrees C and nearly completing it (6.67 wt%H2) at 134 degrees C. Furthermore, the activation energy for the modified MgH2 had been substantially decreased from 76.66 kJ/mol to 32.01 kJ/mol (absorption) and 155.84 kJ/mol to 83.93 kJ/mol (desorption), respectively. The presence of oxygen vacancies at the Ni-O-Zr interface significantly amplified the catalyst's charge conduction capabilities and provided a promising avenue for the development of effective catalysis for robust hydrogen storage.

引用

页数：9

共 60 条

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