ISIS Neutron and Muon Source Data Journal

The structural role of Mg in enhancing the performance of P2-type Na2/3Ni1/3-xMgxMn2/3O2 cathode materials

Abstract: Na-ion batteries have become an important area of research in the last few years. Na2/3Ni1/3Mn2/3O2 with the P2-type structure is a promising cathode in Na-ion batteries due to its high capacity and stability. However, it experiences a structural transition at high voltages (by gliding of the transition metal layers) that causes a detrimental effect on the battery life. Our studies have shown that Mg-doped Na2/3Ni1/3Mn2/3O2 materials exhibit excellent performance with capacities greater than 130 mAh g-1 that remain stable up to 20 cycles. These results contrast to the undoped materials, where a capacity loss of 43.7% is observed. We propose a 5.5 day experiment on POLARIS to deliver a model of the long-range and short-range (using PDF analysis) to understand the role of Mg on the stabilisation of these compounds and thus its performance and further optimisation.

Principal Investigator: Professor Peter Bruce
Experimenter: Dr Anthony Armstrong
Experimenter: Dr Urmimala Maitra
Experimenter: Mr James Somerville
Experimenter: Dr Nuria Tapia
Local Contact: Dr Matthew Tucker

DOI: 10.5286/ISIS.E.RB1510542

ISIS Experiment Number: RB1510542

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:
Professor Peter Bruce et al; (2015): The structural role of Mg in enhancing the performance of P2-type Na2/3Ni1/3-xMgxMn2/3O2 cathode materials , STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1510542

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