“…[ 38,198 ] Inorganic coating techniques were also adopted by other research laboratories, including, but not limited to, Penn State University, RPI, UT Austin, MIT, Tsinghua University, Beijing Institute of Printing, etc. [ 199–204 ] For example, the resulting Si 3 N 4 /P(VDF‐CTFE) bilayer film exhibits significantly reduced conduction loss over a single layer of P(VDF‐CTFE), while maintaining a high energy density. BN coating on polymers like PEI, BOPP, FPE, PI, and c‐BCB resulted in higher dielectric strength for a given charge–discharge efficiency at above 100°C.…”