Shi, Xiaoqun (2025) Development of lithium-rich, high-nickel-content cathodes to increase energy density of lithium-ion batteries. MPhil thesis, University of Sheffield.
Abstract
Nickel-rich cathodes are anticipated to function as essential components for highcapacity
lithium-ion batteries. Though it normally results in more complicated synthesis
conditions, increasing the Ni content can substantially enhance the energy density,
hence restricting its development. This study presents a straightforward one-step solidstate
procedure for synthesising Li-rich and Ni-rich (Li2NiO3) materials. The synthesis
conditions were thoroughly investigated and analysed. The study revealed that the
synthesis circumstances had a significant influence on the electrochemical performance,
especially the calcination temperature.
In addition, the study utilises a straightforward microwave-assisted approach.
The products obtained by synthesis were analysed using X-ray diffraction,
electron microscopy, and galvanostatic electrochemistry. When compared to the
original Li2NiO3, the Li2NiO3 that was exposed to microwaves exhibited a 20%
increase in capacity after undergoing 100 cycles at a rate of C/5.
Metadata
Supervisors: | Sinclair, Derek |
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Related URLs: | |
Keywords: | Li-ion batteries, high nickel, lithium-rich |
Awarding institution: | University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Materials Science and Engineering (Sheffield) |
Depositing User: | Mr Xiaoqun Shi |
Date Deposited: | 14 Jul 2025 15:58 |
Last Modified: | 14 Jul 2025 15:58 |
Open Archives Initiative ID (OAI ID): | oai:etheses.whiterose.ac.uk:37091 |
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