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Development of Catalyst‐Enhanced Sodium Alanate as an Advanced Hydrogen‐Storage Material for Mobile Applications
Author(s) -
Liu Yongfeng,
Ren Zhuanghe,
Zhang Xin,
Jian Ni,
Yang Yaxiong,
Gao Mingxia,
Pan Hongge
Publication year - 2018
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201700517
Subject(s) - hydrogen storage , catalysis , hydride , materials science , hydrogen , raw material , chemical engineering , desorption , chemistry , organic chemistry , adsorption , engineering
As a prototypical high‐capacity complex hydride, sodium alanate (NaAlH 4 ) has attracted significant attention because of its favorable thermodynamics and the potential low cost of its raw materials (NaH and Al). However, a high desorption temperature and slow kinetics preclude its practical use, particularly in mobile applications. The introduction of appropriate catalysts has been demonstrated to reduce the operating temperature and to improve the reversibility of hydrogen storage in NaAlH 4 effectively. In this Review, we survey the development of various catalytic additives and their effects on the hydrogen‐storage behavior of NaAlH 4 . First, the basic physical and chemical characteristics of NaAlH 4 and its catalyst‐doping methods are briefly summarized. Then, the catalytically enhanced hydrogen‐storage properties and the corresponding mechanistic understanding are highlighted. Finally, the remaining challenges and the directions of future research efforts are discussed.