Probing the Depths of Battery Heterogeneity
In this Nature Nanotechnology article, we discuss the context that makes the electrode heterogeneity an important topic for batteries.
To Start at Seoul National University as Faculty
Stephen D. Kang is moving to Korea to start a new lab at Seoul National University!
Contact resistance: important in battery electrodes!
Bulk electronic conductivity of NMC is orders of magnitude larger than previously reported. It's because contact resistances were not properly excluded from measurements. We also find a significant carbon-related impedance component in porous electrodes, as resistive as the charge-transfer resistance but at an even lower frequency.
Why conventional GITT fails; how to fix it
We explain why conventional GITT (Galvanostatic Intermittent Titration Technique) measurements do not work as intended.
Fictitious phase separation paper published in Nature Materials
Our work unraveling the strange phase separation in single-phase lithium-intercalating layered oxides appears in Nature Materials. We also reveal that most battery particles are reaction-limited rather than diffusion-limited.