Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/73772
Title: Synthesis and characterisation of electrode materials for sodium ion battery
Authors: Neoh, Cui Fang
Keywords: DRNTU::Engineering::Materials
Issue Date: 2018
Abstract: The interest in Sodium Ion Batteries have grown in recent years, in the light of the lithium depletion that has been used widely in our everyday lives. To compare the effect of cobalt doping and morphology as improvement strategies for metal oxide cathodes, five representatives of the P2-layered Na0.6MO2 (M = transition metal) have been studied, namely Na0.6MnO2 flake and sphere, as well as P2-Na0.6¬Mn0.9Co0.1O2, P2-Na0.6-Mn0.8Co0.2O2 and P2-Na0.6¬Mn0.6Co0.4O2. The higher capacity of the spheres over the flakes are explained based on the structural features observed using the Scanning Electron Microscope. Additionally, improved cycling stability of Co-doped materials is attributed to better accommodations to volume changes due to its spherical morphology. The two approaches in optimisation of morphology and doping have been shown to be successful in attaining higher capacity and cycling stability.
URI: http://hdl.handle.net/10356/73772
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:MSE Student Reports (FYP/IA/PA/PI)

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