ISIS Neutron and Muon Source Data Journal

Understanding the impact of high-voltage cycling on the structural stability of cobalt-free LiNiO2 using operando neutron diffraction

Abstract: To increase discharge capacity in layered transition metal oxides as cathodes for Li-ion batteries, higher Ni loadings are being utilised. This has recently renewed interest in the species LiNiO2 (LNO) as the end member of this series. The increased capacity overserved for LNO comes with a number of complex, sharp phase changes during cycling, particularly at high voltages, which result in increased capacity but rapid capacity fading. This is accompanied by a dynamic interplay between the different atom pairs in the structure which cause a wide range of effects in the structure. We propose to study these phenomena by using operando neutron diffraction during high-voltage charge/discharge to collect, and subsequently analyse, both the Bragg and Total Scattering data. This study will aid efforts to mitigate the capacity fade and improve the performance of LNO.

Local Contact: Dr Gabriel Perez
Experimenter: Dr Innes McClelland
Experimenter: Professor Edmund Cussen
Experimenter: Dr Beth Johnston
Experimenter: Mr Peter Gross
Experimenter: Dr Chris Thomas

DOI: 10.5286/ISIS.E.RB2200305

ISIS Experiment Number: RB2200305

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Gabriel Perez et al; (2024): Understanding the impact of high-voltage cycling on the structural stability of cobalt-free LiNiO2 using operando neutron diffraction, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2200305

Data is released under the CC-BY-4.0 license.