William Brant is a fourth year PhD student at the University of Sydney just weeks out from submitting his final thesis. His PhD project has centred on synthesising new defect perovskite oxides for use as lithium storage materials. In particular, his thesis focuses on combining in-situ and ex-situ diffraction techniques to understand how the inserted lithium interacts with the host defect perovskite structure and how this interaction influences the physical properties.