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Electrochemical studies of hexavanadates and lithium manganese oxides for aqueous rechargeable lithium batteries

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thesis
posted on 07.04.2016 by Vivek Nair
Aqueous rechargeable lithium ion battery (ARLB) systems are potential alternative to existing rechargeable battery systems like Ni-Cd, Ni-MH, lead acid and lithium ion battery due to its advantages including rate capabilities, safety and environmental friendliness. Investigations of high energy/power, long cycle life and low-cost materials for aqueous rechargeable lithium ion batteries are of great interest especially for transportation applications such as electric (EVs) or hybrid-electric vehicles (HEVs), large-scale power storage grids and wearable electronics. ARLBs have higher power density but lower energy densities compared to lithium polymer batteries. ARLBs have much better rate capabilities (10-5000mAg-1) compared to lithium ion batteries (0.1-10mAg-1). This thesis focuses on the development and study of novel hexavanadate-based anode and lithium manganese oxide based cathode materials for ARLBs with higher energy densities and better cycle life performances at higher rates. In this thesis, new set of hexavanadate-based materials with high theoretical capacities like Li3V6O16, Na2V6O16, K2V6O16, CaV6O16 and SrV6O16from the family of metal vanadium oxides (Mx+2/x V6O16;x = valency of alkali metal ion) for aqueous rechargeable lithium ion battery were synthesized by both facile hydrothermal and sol-gel method using Vanadium Oxide (V2O5) and hydroxide salt of the alkali metal ion LiOH, NaOH, KOH, Ca(OH)2 and Sr(OH)2. [Continues.]

Funding

Nanyang Technological University, Institute for Sports Research

Nanyang Technological University, Energy Research Institute (ERIAN)

Singapore, Ministry of Education

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Publisher

© Vivek Sahadevan Nair

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2016

Notes

A Doctoral Thesis in partial fulfilment of the requirements for the award of Joint Degree of Doctor of Philosophy of Loughborough University and Nanyang Technological University.

Language

en

Supervisor(s)

Madhavi Srinivasan

Qualification name

PhD

Qualification level

Doctoral

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