近期,我院研究生贾凯、教师吴富英(共一)、陈代芬(通讯)、张刘挺(通讯)等的研究成果“Elastic Framework Driven Mg2+ Autocapture and Autocatalysis: Mechanistic Origin of Fast Hydrogen Release in 2LiBH4-MgH2”在《Rare Metals》(一区TOP,IF=11)上发表。
论文简介如下:
The protracted incubation time has long been the Achilles’ heel of the promising 2LiBH4–MgH2 hydrogen storage system. Instead of the usual route-creating heterogeneous nucleation sites to hasten MgB2 formation-we shortened both de- and re-hydrogenation incubation periods by steering the Mg transformation itself. Herein, this paper engineered a Prussian-blue analogue whose surface charge landscape traps Mg2+ and the released electrons in a non-stoichiometric lattice, keeping them instantly available for MgB2 nucleation. Theory and experiment show that CoFe-PBA stores both ion and electron; Under the same experimental temperature, the optimized LiBH4-MgH2 hydrogen storage system demonstrates remarkable performance improvements: its incubation period is significantly reduced to just one seventh that of the original hydrogen storage material, achieving a leap forward in reaction kinetics efficiency. The above concept provides a versatile tool for any catalytic system constrained by nucleation delays and opens new avenues for energy-related research.


