Abstract Scope |
Conventional Li-ion batteries are formed using slurry-cast electrodes whose random nature limits both energy density and rate performance, and is generally incompatible with solid-state designs. We have made considerable strides in electrodeposition of electrode materials in both solid and deterministically mesostructured form with enhanced energy densities and rate performances. I will present our work on the electrodeposition of high performance silicon and tin-based Na and Li-ion anodes and LiCoO2, NaCoO2, LiMn2O4, and Al-doped LiCoO2-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. Finally, I will discuss our first strides to build solid-state batteries using these electrodes. |