Thermodynamics and kinetics of hydriding and dehydriding reactions in Mg-based hydrogen storage materials

Autor: Qian Li, Yangfan Lu, Qun Luo, Xiaohua Yang, Yan Yang, Jun Tan, Zhihua Dong, Jie Dang, Jianbo Li, Yuan Chen, Bin Jiang, Shuhui Sun, Fusheng Pan
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Journal of Magnesium and Alloys, Vol 9, Iss 6, Pp 1922-1941 (2021)
Druh dokumentu: article
ISSN: 2213-9567
DOI: 10.1016/j.jma.2021.10.002
Popis: Mg-based materials are one of the most promising hydrogen storage candidates due to their high hydrogen storage capacity, environmental benignity, and high Clarke number characteristics. However, the limited thermodynamics and kinetic properties pose major challenges for their engineering applications. Herein, we review the recent progress in improving their thermodynamics and kinetics, with an emphasis on the models and the influence of various parameters in the calculated models. Subsequently, the impact of alloying, composite, and nano-crystallization on both thermodynamics and dynamics are discussed in detail. In particular, the correlation between various modification strategies and the hydrogen capacity, dehydrogenation enthalpy and temperature, hydriding/dehydriding rates are summarized. In addition, the mechanism of hydrogen storage processes of Mg-based materials is discussed from the aspect of classical kinetic theories and microscope hydrogen transferring behavior. This review concludes with an outlook on the remaining challenge issues and prospects.
Databáze: Directory of Open Access Journals