近期，我院教师郑家广（通讯）、张刘挺（通讯），研究生张焱、卢志禹等的研究成果“Boosting the hydrogen storage performance of magnesium hydride with metal organic framework-derived Cobalt@Nickel oxide bimetallic catalyst”在《Chinese Journal of Chemical Engineering》上发表

近期，我院教师郑家广（通讯）、张刘挺（通讯），研究生张焱、卢志禹等的研究成果“Boosting the hydrogen storage performance of magnesium hydride with metal organic framework-derived Cobalt@Nickel oxide bimetallic catalyst”在《Chinese Journal of Chemical Engineering》上发表。

论文简介如下：

In this study, a MOF-derived bimetallic Co@NiOcatalyst was synthesized and doped into MgH₂ to improve the hydrogen desorption and resorption kinetics. The Co@NiO catalyst decreased the onset dehydrogenation temperature of MgH₂ by 160 °C, compared with un-doped MgH₂. The MgH₂ + 9 wt% Co@NiO composite released 6.6 wt% hydrogen in 350 s at 315 °C and uptook 5.4 wt% hydrogen in 500 s at 165 °C, showing greatly accelerated de/rehydrogenation rates. Besides, the desorption activation energy of MgH₂ + 9 wt% Co@NiO was decreased to 93.8±8.4 kJ·mol^-1. Noteworthy, symbiotic Mg₂NiH₄/Mg₂CoH₅ clusters were in-situ formed from bimetallic precursors and inlaid on MgH₂ surface, which are considered as “multi-step hydrogen pumps”, and provides surface pathways for hydrogen absorption. Meanwhile, the introduced Mg₂NiH₄/Mg₂CoH₅ interfaces could provide numerous low energy barrier H diffusion channels, therefore accelerating the hydrogen release and uptake. This research proposes new insights to design high-efficiency bimetallic catalyst for MgH₂ hydrogen storage.

全文下载：https://www.sciencedirect.com/science/article/pii/S1004954122002762?via%3Dihub