We investigate the use of soft materials to create a Li-air cathode that brings the three key components: electrolyte, electrode and air, into close contact with each other, increasing the contact area between the components and thereby reducing the likelihood of the reaction product keeping the electrolyte and air apart from each other. We use high internal phase Pickering emulsions (Pickering HIPE) (Fig. 1) to create a ‘tricontinuous’ structure (Fig. 2), in which the conducting particles on the interface and both liquid phases are all continuous in 3D space . When fully realised, this structure should allow us to create a cathode where the build-up of reaction product over repeated charge cycles has very little effect on the ability of the electrolyte to react with oxygen from the air during discharge.
 J. Read, J. Electrochem. Soc. 149 (2002) A1190.