The development of new electric applications powered by batteries could further take advantage of Australia’s abundant mineral resources (e.g., Li, Fe, Ni, Mn). Utilising solid-state electrolytes addresses the safety concerns of flammable organic liquid electrolytes in commercially available Li-ion batteries. In post-lithium batteries, e.g., proton batteries, solid-state electrolytes bring other benefits for better performance and stability. In recent years, my colleagues and I have dedicated ourselves to designing new electrode materials for solid-state batteries based on different battery chemistries. At this conference, I will present our recent works on the design of electrodes, focusing on rechargeable solid-state proton batteries1 and solid-state lithium batteries2,3.