AVS 66th International Symposium & Exhibition
    Applied Surface Science Division Thursday Sessions
       Session AS-ThA

Invited Paper AS-ThA10
Interfaces in Electrodeposited Li-Ion Battery Electrodes

Thursday, October 24, 2019, 5:20 pm, Room A211

Session: Role of Surfaces and Interfaces in Energy Material and Industrial Problems
Presenter: Paul Braun, University of Illinois at Urbana-Champaign
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Electrodeposition of electrode materials has the potential to enhance secondary battery performance and broaden the scope of available electrode form factors. For example, as we have shown, electrodeposited electrodes provide energy densities not achievable via conventional slurry-cast electrode processing methodologies. 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 related 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 to powders synthesized at much higher temperatures. What we have found, is that the interfaces, and interphases that may form during cycling, have significant impacts on the properties of the resulting electrodes. Understanding the properties of these interfaces/interphases is critical to understanding, and ultimately improving, overall cell performance.