An aqueous rechargeable formate-based hydrogen battery driven by heterogeneous Pd catalysis.
The formate-based rechargeable hydrogen battery (RHB) promises high reversible capacity to meet the need for safe, reliable, and sustainable H2 storage used in fuel cell applications. Described herein is an additive-free RHB which is based on repetitive cycles operated between aqueous formate dehydrogenation (discharging) and bicarbonate hydrogenation (charging). Key to this truly efficient and durable H2 handling system is the use of highly strained Pd nanoparticles anchored on graphite oxide nanosheets as a robust and efficient solid catalyst, which can facilitate both the discharging and charging processes in a reversible and highly facile manner. Up to six repeated discharging/charging cycles can be performed without noticeable degradation in the storage capacity.
Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai 200433 (P. R. China).
Qing-Yuan
QY
Bi
Jian-Dong
JD
Lin
Yong-Mei
YM
Liu
Xian-Long
XL
Du
Jian-Qiang
JQ
Wang
He-Yong
HY
He
Yong
Y
Cao
Pd catalysis; batteries; energy conversion; hydrogen; lattice strain