C2020-47 – Lithium Superionic Conducting Coatings For High-Performance Nickel-Rich Cathodes of Lithium-ion Batteries

Explanation of Claimed Invention In this invention, we propose, for the first time, to surface-modify NMC811 cathodes directly with a conformal layer of lithium superionic conductor coatings (enabling an ionic conductivity of up to 10-3 S/cm at room temperature, which is more than four orders of magnitude higher than that reported by others) via atomic layer deposition (ALD) for achieving high performance and enhanced safety. Problem Addressed by Claimed Invention In pursuing new LIBs, layer-structured nickel-rich LiNi0.8Mn0.1Co0.1O2 (NMC811) cathodes have stood out, featuring its high potential, high capacity, and cost-effectiveness. Unfortunately, NMC811 cathodes suffer from a series of issues in structural, interfacial, and thermodynamic stability, which hinder them from commercialization. Technology Ventures ventures@uark.edu 479-575-7243

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