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Li 2 NH‐LiBH 4 : a Complex Hydride with Near Ambient Hydrogen Adsorption and Fast Lithium Ion Conduction
Author(s) -
Wang Han,
Cao Hujun,
Zhang Weijin,
Chen Jian,
Wu Hui,
Pistidda Claudio,
Ju Xiaohua,
Zhou Wei,
Wu Guotao,
Etter Martin,
Klassen Thomas,
Dornheim Martin,
Chen Ping
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201703910
Subject(s) - hydrogen storage , hydride , orthorhombic crystal system , ion , lithium (medication) , inorganic chemistry , hydrogen , lithium hydride , chemistry , conductivity , crystal structure , materials science , crystallography , organic chemistry , ionic bonding , medicine , endocrinology
Complex hydrides have played important roles in energy storage area. Here a complex hydride made of Li 2 NH and LiBH 4 was synthesized, which has a structure tentatively indexed using an orthorhombic cell with a space group of Pna 2 1 and lattice parameters of a= 10.121, b= 6.997, and c= 11.457 Å. The Li 2 NH‐LiBH 4 sample (in a molar ratio of 1:1) shows excellent hydrogenation kinetics, starting to absorb H 2 at 310 K, which is more than 100 K lower than that of pristine Li 2 NH. Furthermore, the Li + ion conductivity of the Li 2 NH‐LiBH 4 sample is about 1.0×10 −5 S cm −1 at room temperature, and is higher than that of either Li 2 NH or LiBH 4 at 373 K. Those unique properties of the Li 2 NH‐LiBH 4 complex render it a promising candidate for hydrogen storage and Li ion conduction.