In this work, the effect of mixing processes on the microstructure of porous Li-ion battery electrodes is studied through directly measuring electrode tortuosity and local electronic conductivity. Different types of mixing processes were performed by varying, for instance, the speed of mixing. For measuring tortuosity the blocking electrolyte method is used [2]. This method is based on an AC-impedance measurement of the electrode sample using a non-intercalating or blocking electrolyte. For electronic conductivity measurements, a flexible surface conductivity probe was used [3]
This research was funded by the BMR program of the US Department of Energy.
[1] Dreger et al., Abstract 326, PRiME 2016, Honolulu, HI.
[2] Landesfeind et al., J. Electrochem. Soc. 163, A1373, (2016).
[3] Hardy et al., Abstract 113, 231st Meeting of the Electrochemical Society, New Orleans, LA, (2017)