近期，我院新能源本科生郑林欣，教师张刘挺（通讯）等的研究成果“Gas atmospheres intrigued microstructure evolution of Ni-Ti based MOFs with exceptional impact on magnesium hydride for hydrogen storage”在《Rare Metals》（IF=11）上发表。
论文简介如下：
Magnesium hydride (MgH2) is recognized as a promising candidate for solid-state hydrogen storage due to its high hydrogen capacity and safety. However, its highly stable thermodynamics and slow kinetics pose challenges to its commercial application. To effectively solve these problems, Ni-Ti based MOFs (NT-MOF and NT-MOF-x (x=Ar, O2, and H2)) are prepaered as effective catalysts for MgH2, with NT-MOF-Ar/MgH2 showing the best performance. The onset dehydrogenation temperature of NT-MOF-Ar/MgH2 is reduced to 197 °C and remains 97% H2 capacity after 20 cycles. An interface reconstruction which enables its superior catalytic performance is evidenced. By in situ forming a multiphase-multivalence Mg-Ni-Ti-C catalytic interface: Mg2Ni/Mg2NiH4 act as a hydrogen pump, multivalence Ti facilitates charge transfer, while amorphous carbon mitigates agglomeration, enhancing long-term performance. Our work verifies the interface reconstruction in a MgH2 hydrogen storage system, thus paving ways for developing new catalytic mechanisms and efficient catalysts for hydrogen storage and other energy related fields.
