Thomas J. Mason | Researchain

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Nature Communications | 2015

In-operando high-speed tomography of lithium-ion batteries during thermal runaway

Donal P. Finegan; Mario Scheel; James Robinson; Bernhard Tjaden; Ian Hunt; Thomas J. Mason; Jason Millichamp; Marco Di Michiel; Gregory J. Offer; Gareth Hinds; Daniel J.L. Brett; Paul R. Shearing

Prevention and mitigation of thermal runaway presents one of the greatest challenges for the safe operation of lithium-ion batteries. Here, we demonstrate for the first time the application of high-speed synchrotron X-ray computed tomography and radiography, in conjunction with thermal imaging, to track the evolution of internal structural damage and thermal behaviour during initiation and propagation of thermal runaway in lithium-ion batteries. This diagnostic approach is applied to commercial lithium-ion batteries (LG 18650 NMC cells), yielding insights into key degradation modes including gas-induced delamination, electrode layer collapse and propagation of structural degradation. It is envisaged that the use of these techniques will lead to major improvements in the design of Li-ion batteries and their safety features.

Journal of Synchrotron Radiation | 2014

A novel high-temperature furnace for combined in situ synchrotron X-ray diffraction and infrared thermal imaging to investigate the effects of thermal gradients upon the structure of ceramic materials

James Robinson; Leon D. Brown; Rhodri Jervis; Oluwadamilola O. Taiwo; Jason Millichamp; Thomas J. Mason; Tobias P. Neville; David S. Eastwood; Christina Reinhard; Peter D. Lee; Daniel J.L. Brett; Paul R. Shearing

A combined X-ray diffraction and thermal imaging technique is described to investigate the effect of thermal gradients on high-temperature composite materials.

Journal of Synchrotron Radiation | 2017

A novel molten-salt electrochemical cell for investigating the reduction of uranium dioxide to uranium metal by lithium using in situ synchrotron radiation

Leon D. Brown; Rema Abdulaziz; Rhodri Jervis; Vidal Bharath; Thomas J. Mason; Robert C. Atwood; Christina Reinhard; Leigh D. Connor; Douglas Inman; Daniel J.L. Brett; Paul R. Shearing

Energy-dispersive X-ray diffraction was used to follow the reduction of UO2 to U in LiCl–KCl eutectic. A novel electrochemical cell was designed and constructed in order to follow molten-salt electrochemical investigations in situ.

Journal of Power Sources | 2012

Ex-situ characterisation of gas diffusion layers for proton exchange membrane fuel cells

Ahmad El-kharouf; Thomas J. Mason; Daniel J.L. Brett; Bruno G. Pollet

Journal of Power Sources | 2012

Effect of clamping pressure on ohmic resistance and compression of gas diffusion layers for polymer electrolyte fuel cells

Thomas J. Mason; Jason Millichamp; Tobias P. Neville; Ahmad El-kharouf; Bruno G. Pollet; Daniel J.L. Brett

Journal of Power Sources | 2013

A study of carbon deposition on solid oxide fuel cell anodes using electrochemical impedance spectroscopy in combination with a high temperature crystal microbalance

Jason Millichamp; Thomas J. Mason; Nigel P. Brandon; Richard J. C. Brown; Robert C. Maher; George Manos; Tobias P. Neville; Daniel J.L. Brett

Journal of Power Sources | 2013

A study of the effect of water management and electrode flooding on the dimensional change of polymer electrolyte fuel cells

Thomas J. Mason; Jason Millichamp; Tobias P. Neville; Paul R. Shearing; Stefaan Simons; Daniel J.L. Brett

International Journal of Hydrogen Energy | 2013

A study of the effect of compression on the performance of polymer electrolyte fuel cells using electrochemical impedance spectroscopy and dimensional change analysis

Thomas J. Mason; Jason Millichamp; Paul R. Shearing; Daniel J.L. Brett

Journal of Power Sources | 2015

Mechanisms and effects of mechanical compression and dimensional change in polymer electrolyte fuel cells – A review

Jason Millichamp; Thomas J. Mason; Tobias P. Neville; N. Rajalakshmi; Rhodri Jervis; Paul R. Shearing; Daniel J.L. Brett

Journal of Power Sources | 2015

Investigating the effect of thermal gradients on stress in solid oxide fuel cell anodes using combined synchrotron radiation and thermal imaging

James Robinson; Leon D. Brown; Rhodri Jervis; Oluwadamilola O. Taiwo; Thomas M. M. Heenan; Jason Millichamp; Thomas J. Mason; Tobias P. Neville; Ralph Clague; David S Eastwood; Christina Reinhard; Peter D. Lee; Daniel J.L. Brett; Paul R. Shearing

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