Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 24, Pages 15232-15241Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b02607
Keywords
hydrogen storage; Ni/graphene; interface; composite; gravimetric density
Funding
- Canada Research Chair program
- National Engineering Research Council of Canada
- China Scholarship Council (CSC)
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We have designed a Ni graphene composite for hydrogen storage with Ni nanoparticles of 10 nm in size, uniformly dispersed over a graphene substrate. This system exhibits attractive features like high gravimetric density, ambient conditions, and low activation temperature for hydrogen release. When charged at room temperature and an atmospheric hydrogen pressure of 1 bar, it could yield a hydrogen capacity of 0.14 wt %. When hydrogen pressure increased to 60 bar, the sorbent had a hydrogen gravimetric density of 1.18 wt %. The hydrogen release could occur at an operating temperature below 150 degrees C and completes at 250 degrees C.
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