我院研究生卢志禹、教师张刘挺与郑家广的研究成果“Two-dimensional vanadium nanosheets as a remarkably effective catalyst for hydrogen storage in MgH2”在《Rare Metals》上发表
发布时间: 2021-07-05 浏览次数: 12

近期,我院研究生卢志禹、教师张刘挺与郑家广的研究成果Two-dimensional vanadium nanosheets as a remarkably effective catalyst for hydrogen storage in MgH2在《Rare Metals》(IF=4.003)上发表。

论文简介如下:

 Magnesium hydride (MgH2), which possesses high hydrogen density of 7.6 wt%, abundant resource and non-toxicity, has captured intense attention as one of the potential hydrogen storage materials. However, the practical application of Mg/MgH2 system is suffering from high thermal stability, sluggish absorption and desorption kinetics. Herein, two-dimensional vanadium nanosheets (VNS) were successfully prepared via a facile wet chemical ball milling method, and proved highly effective on improving the hydrogen storage performance of MgH2. For instance, the MgH2+7 wt% VNS composite began to release hydrogen at 187.2 °C, 152 °C lower than that of additive-free MgH2. At 300 °C,6.3 wt% hydrogen was released from the MgH2+7 wt% VNS composite within 10 min. In addition, the fully dehydrogenated sample could absorb hydrogen even at room temperature under 32 bar of hydrogen pressure. XRD and TEM results confirmed metallic vanadium served as catalytic unit for facilitating the de/rehydrogenation reaction of MgH2. This finding presents an example of facile synthesis of two-dimensional vanadium with excellent catalysis, which may shed light on future design and prepare of highly effective layered catalysts for hydrogen storage and other energy related areas.

 

全文下载:https://link.springer.com/article/10.1007/s12598-021-01764-7