In-plane aligned doping pattern in electrospun PEI/MBene nanocomposites for high-temperature capacitive energy storage

at 150 °C, with an efficiency exceeding 90%. Additionally, this in-plane aligned doping pattern also enhances mechanical properties. This work provides a unique solution to mitigate side effects by utilizing conductive fillers, presenting a valuable strategy to fabricate dielectric films for high-performance energy storage.