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Selected Works

Gordon Wallace

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Articles 1 - 4 of 4

Full-Text Articles in Engineering

Carbon Nanotube Network Modified Carbon Fibre Paper For Li Ion Batteries, Jun Chen, Jiazhao Wang, Andrew I. Minett, Yong Liu, Carol M. Lynam, Hua-Kun Liu, G G. Wallace Mar 2013

Carbon Nanotube Network Modified Carbon Fibre Paper For Li Ion Batteries, Jun Chen, Jiazhao Wang, Andrew I. Minett, Yong Liu, Carol M. Lynam, Hua-Kun Liu, G G. Wallace

Gordon Wallace

Here we report on the direct deposition of large quantities of highly porous carbon nanotube networks onto a carbon fibre paper support; subsequently utilised as the anode in a Li-ion battery application showing improved long-term performance and chemical stability with a significant fully reversible capacity of 546mAh/g.


Novel Electrode Substrates For Rechargeable Lithium/Polypyrrole Batteries, Jiazhao Wang, Chee O. Too, Dezhi Zhou, G G. Wallace Mar 2013

Novel Electrode Substrates For Rechargeable Lithium/Polypyrrole Batteries, Jiazhao Wang, Chee O. Too, Dezhi Zhou, G G. Wallace

Gordon Wallace

A lightweight and inexpensive stainless steel mesh has been investigated as an electrode substrate material for Li/polypyrrole rechargeable battery. The effects of substrate materials on surface morphology of films, charge–discharge capacity and coulombic efficiency are discussed in detail. The results show that the capacity of the cell with stainless steel mesh is about 10% lower than the cell using platinum mesh, but it is much lighter and cheaper than that of platinum mesh, therefore, it is a promising substrate material for Li/polymer batteries.


The Use Of Embedded Sensors For The Monitoring Of Adhesive Joints In Marine Environments, Scott T. Mcgovern, Geoffrey M. Spinks, G G. Wallace Mar 2013

The Use Of Embedded Sensors For The Monitoring Of Adhesive Joints In Marine Environments, Scott T. Mcgovern, Geoffrey M. Spinks, G G. Wallace

Gordon Wallace

A copolymer incorporating polyaniline was used as a sensing medium in the construction of a resistance based humidity sensor. Aniline monomer was polymerised in the presence of poly (butyl acrylate / vinyl acetate) and a copolymer containing polyaniline emeraldine salt was obtained. The sensing medium was then developed by redissolving 1-2 w/w% of the resulting polymer residue in dichloromethane to produce a processable polymer blend solution. Some of this polymer residue was also de-doped in a solution of ammonia, and then washed with distilled water until the waste water had a neutral pH. This residue was then redissolved at 1-2 …


Highly Processable Method For The Construction Of Miniature Conducting Polymer Moisture Sensors, Scott T. Mcgovern, Geoffrey M. Spinks, G G. Wallace Mar 2013

Highly Processable Method For The Construction Of Miniature Conducting Polymer Moisture Sensors, Scott T. Mcgovern, Geoffrey M. Spinks, G G. Wallace

Gordon Wallace

A polymer blend incorporating polyaniline (PAn) was used as a sensing medium in the construction of a resistance based humidity sensor. Aniline monomer was polymerised to PAn emeraldine salt (ES) in the presence of poly (butyl acrylate-co-vinyl acetate) and the processable blend was developed by redissolving 1-2 w/w% of the resulting sensing polymer residue in dichloromethane (DCM). Some of this residue was washed in ammonia solution to de-dope the PAn to emeraldine base (EB) to act as a protective layer on the surface of the sensing polymer. This residue was then washed with distilled water until a neutral pH was …