Dun, Chaochao Jeong, Sohee Liu, Yi-Sheng Leick, Noemi Mattox, Tracy M. Guo, Jinghua Lee, Joo-Won Gennett, Thomas Stavila, Vitalie Urban, Jeffrey J. 2024-01-19T13:32:09Z 2024-01-19T13:32:09Z 2022-01-10 2021-11 1613-6810 https://pubs.kist.re.kr/handle/201004/116222 Design of interfaces with thermodynamic and kinetic specificity is of great importance for hydrogen storage from both an applied and fundamental perspective. Here, in order to destabilize the metal hydride and protect the dehydrogenated products from oxidizing, a unique core-shell structure of porous Mg(BH4)(2)-based framework with a thin layer (no more than 5 nm) of MgCl2 additives on the surface, has been proposed and synthesized via a wet-chemical method. The local structure and electronic state of the present complex system are systematically investigated to understand the correlation between the distribution of additives and dehydrogenation property of Mg(BH4)(2). A significant improvement is achieved for hydrogen desorption with chlorides: initial hydrogen release from MgCl2 decorated gamma-phase Mg(BH4)(2) particles commences at 100 degrees C and reaches a maximum of 9.4 wt% at 385 degrees C. Besides the decreased decomposition temperature, an activation barrier of about 76.4 kJ mol(-1) lower than that of Mg(BH4)(2) without MgCl2 is obtained. Moreover, MgCl2 decoration can also prevent the whole decomposed system (both Mg- and B- elements) from oxidizing, which is a necessary condition to reversibility. English WILEY-V C H VERLAG GMBH HYDROGEN STORAGE PROPERTIES MG(BH4)(2) RELEASE Additive Destabilization of Porous Magnesium Borohydride Framework with Core-Shell Structure Article 10.1002/smll.202101989 1 SMALL, v.17, no.44 SMALL 17 44 scie scopus 000699947300001 2-s2.0-85115713698 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article HYDROGEN STORAGE PROPERTIES MG(BH4)(2) RELEASE