Alumina – Stabilized SEI and CEI in Potassium Metal Batteries
Pengcheng Liu,
Hongchang Hao,
Aditya Singla
et al.
Abstract:Aluminum oxide (Al2O3) nanopowder is spin‐coated onto both sides of commercial polypropene separator to create artificial solid‐electrolyte interphase (SEI) and artificial cathode electrolyte interface (CEI) in potassium metal batteries (KMBs). This significantly enhances the stability, including of KMBs with Prussian Blue (PB) cathodes. For example, symmetric cells are stable after 1,000 cycles at 0.5 mA/cm2 ‐ 0.5 mAh/cm2 and 3.0 mA/cm2 ‐ 0.5 mAh/cm2. Alumina modified separators promote electrolyte wetting an… Show more
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