Study on electronic structure and rate performance of olivine phosphate cathode materials

(2020) Study on electronic structure and rate performance of olivine phosphate cathode materials. PhD by Publication, Queensland University of Technology.

Description

This thesis has investigated a family of olivine phosphate battery materials using various spectroscopic techniques. The research has demonstrated that the surfaces of these materials display nanoscale Lithium depletion. The differentiated surface layers are responsible for many of the measured properties, which have so far been mostly attributed to the bulk of the compounds. In the case of LiFePO4, the surface layers also concentrate the dopants, which have been reported as beneficial for the electrochemical performance. The identified surface differentiation seems present in other families of battery materials. Its identification provides new insights on particle surface design for performance optimization.

Impact and interest:

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376 since deposited on 23 Jul 2020
75 in the past twelve months

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ID Code: 201911
Item Type: QUT Thesis (PhD by Publication)
Supervisor: Alarco, Jose, Nerkar, Jawahar, & Talbot, Peter
Keywords: band gap, battery, cathode materials, DFT, electrochemistry, electronic band structure, lithium ion, olivine phosphates, surface, rate
DOI: 10.5204/thesis.eprints.201911
Divisions: Past > QUT Faculties & Divisions > Science & Engineering Faculty
Past > Schools > School of Chemistry, Physics & Mechanical Engineering
Institution: Queensland University of Technology
Deposited On: 23 Jul 2020 22:33
Last Modified: 23 Jul 2020 22:33