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Title: Transition metal nitride materials For supercapacitor applications
Author: Gray, Benjamin
ISNI:       0000 0004 7972 0819
Awarding Body: University of Southampton
Current Institution: University of Southampton
Date of Award: 2015
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There is a pressing need to develop more environmentally friendly ways to generate and store electrical energy. Current technology for this is limited by the speed at which power storage can absorb and store the energy generated. To this end, transition metal nitride materials have been investigated with the aim of creating a nitride based supercapacitor. Ti(NEt2)4 and V(NEt2)4 were prepared and there, and Ta(NMe2)5's, sol-gel chemistry was explored. These sols were infiltrated into multilayer templates, composed of hexagonally close packed opalescent crystals of DVB crosslinked amidine capped polystyrene spheres and heated under flowing ammonia to give metal nitride inverse opals exhibiting long range order and specific capacitances of upto 2 F g-1. Solid (Ti,V)N solutions were also synthesised and tested electrochemically as supercapacitor electrode materials. TiN and VN foils were prepared and subjected to a range of surface treatments. Their specific capacitances at a range of scan rates were measured to ascertain which surface treatment gave the highest capacitive performance.
Supervisor: Hector, Andrew Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available