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Valorisation of used lithium-ion batteries into nanostructured catalysts for green hydrogen from boranes
- Source :
- Materials Advances. 1:2279-2285
- Publication Year :
- 2020
- Publisher :
- Royal Society of Chemistry (RSC), 2020.
-
Abstract
- Cobalt-based Li-ion batteries are produced globally on a massive scale, but most are discarded to landfill at the end of their useful lifetime. In this work, an efficient cobalt catalyst for the hydrolysis of sodium borohydride to dihydrogen was prepared from lithium ion battery waste, providing a second life for valuable minerals. This material is composed of a mixed metal cobalt–aluminium oxide supported on graphene, as elucidated by a combined FTIR, Raman, SEM, scanning transmission electron microscopy with electron energy loss spectroscopy (STEM-EELS) and energy-dispersive X-ray spectroscopy (EDS) study. The obtained metal oxide material, which exhibits an average oxidation state for Co of 2.45, is a languid catalyst at room temperature, but rapid hydrogen production of up to 49 L(H2) min−1 g−1(Co) was observed in catalytic runs heated to 70 °C. This carbon-supported cobalt catalyst is competitive with designed cobalt nanostructured catalysts prepared from pure precursors. This work is illustrative of the opportunities which arise when e-waste is utilised as a mineral resource within the scope of a circular economy.
- Subjects :
- Materials science
Hydrogen
Oxide
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Lithium-ion battery
0104 chemical sciences
Catalysis
chemistry.chemical_compound
Sodium borohydride
chemistry
Chemical engineering
Chemistry (miscellaneous)
General Materials Science
Lithium
0210 nano-technology
Cobalt
Hydrogen production
Subjects
Details
- ISSN :
- 26335409
- Volume :
- 1
- Database :
- OpenAIRE
- Journal :
- Materials Advances
- Accession number :
- edsair.doi...........9ed3824a838d030890da14bbd1da3d75