(Invited) High Energy and Power Density Dense and Deterministically Mesostructured Electrodeposited Electrodes for Lithium and Sodium-Ion Batteries

摘要

Electrodeposition of electrode materials has the potential to grow anode and cathode materials with unprecedented energy and power densities for both Li-ion and Na-ion rechargeable batteries and to broaden the scope of available electrode form factors. I will present our work on the electrodeposition of high performance silicon and tin-based Na and Li-ion anodes and LiCoO_2, NaCoO_2, LiMn_2O_4, and Al-doped LiCoO_2-based Na and Li-ion cathodes. The electrolytically active materials were formed either as solid films, or where significant volume changes upon cycling are present, as a 3D mesostructured film. The capacities are near-theoretical, and in the case of the electroplated oxides, the crystallinities and electrochemical capacities are comparable, or in some cases, even better than powders synthesized at much higher temperatures. Time permitting, I will also discuss some of our recent work on the fundamentals of energy transport in redox-active materials for flow batteries.