LaNi5.5 particles for reversible hydrogen storage in N-ethylcarbazole
Title
LaNi5.5 particles for reversible hydrogen storage in N-ethylcarbazole
Subject
Hydrogen storage
Efficiency
Binary alloys
Calcium compounds
Hydrogen storage alloys
Description
In this work, we demonstrate that the classic hydrogen storage alloy LaNi5 can catalyze the reversible hydrogen storage in N-ethylcarbazole (NEC), one of the most promising liquid organic hydrogen carriers (LOHCs), with high efficiency and cyclic stability. Using CaH2 reduction in molten salt, uniform LaNi5+x particles around 100 nm are obtained from hydroxide precursors. The sub-m LaNi5.5 particles exhibit excellent catalytic ability for reversible hydrogen storage in NEC, which is originated from the synergism of surface excessive Ni and the LaNi5 core with reversible hydrogen storage property. Hydrogen storage capacity above 5.5 wt% H2 (based on 12 H-NEC) can be achieved for 9 cycles using 10 wt% LaNi5.5. The time required to reach 5.5 wt% hydrogen storage capacity is about 4.5 h for NEC hydrogenation at 453 K and 4.0 h for 12 H-NEC dehydrogenation at 473 K. The results are very promising in developing high-efficiency LOHC-based hydrogen storage systems and provide new insights into hydride-based catalysts. 2020 Elsevier Ltd
80
Publisher
Nano Energy
Date
2021
Contributor
Yu, Hongen
Yang, Xue
Jiang, Xiaojing
Wu, Yiman
Chen, Shunpeng
Lin, Wei
Wu, Yong
Xie, Lei
Li, Xingguo
Zheng, Jie
Type
journalArticle
Identifier
22112855
10.1016/j.nanoen.2020.105476
Collection
Citation
“LaNi5.5 particles for reversible hydrogen storage in N-ethylcarbazole,” Lamar University Midstream Center Research, accessed May 18, 2024, https://lumc.omeka.net/items/show/25265.