The nickel battery positive electrode revisited: stability and structure of the β-NiOOH phase
Journal Article
·
· Journal of Materials Chemistry. A
- CIC energiGUNE, Miñano (Spain)
- Univ. of California, Santa Barbara, CA (United States)
- Stony Brook Univ., NY (United States)
- Stony Brook Univ., NY (United States); Cambridge Univ. (United Kingdom)
- Univ. Autonoma de Barcelona (Spain)
In this work, the crystal structure of the nickel battery positive electrode material, β-NiOOH, is analyzed through a joint approach involving NMR and FTIR spectroscopies, powder neutron diffraction and DFT calculations. The obtained results confirm that structural changes occur during the β-Ni(OH)2/β-NiOOH transformation leading to a metastable crystal structure with a TP2 host lattice. This structure involves two types of hydrogen atoms both forming primary and secondary hydrogen bonds. The formation of TP2 NiOOH as opposed to the more stable P3 host type during β-Ni(OH)2/β-NiOOH transformation has a kinetic origin that can be understood by a lower strain penalty involved in the transformation.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). NorthEast Center for Chemical Energy Storage (NECCES); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); State Univ. of New York (SUNY), Albany, NY (United States); Univ. of California, Oakland, CA (United States)
- Sponsoring Organization:
- Ministry of Economy and Competitiveness (MINECO); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-05CH11231; SC0012583
- OSTI ID:
- 1543821
- Journal Information:
- Journal of Materials Chemistry. A, Journal Name: Journal of Materials Chemistry. A Journal Issue: 39 Vol. 6; ISSN JMCAET; ISSN 2050-7488
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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