supported by the National Natural Science Foundation of China (52177151, 51631005 and 51907154);the National Key Research and Development Plan of China (2017YFB0902503 and2016YFB0900802);Beijing Science and Technology Plan(Z191100002019014);the administration of Tsinghua University。
Due to their outstanding electrical insulation performance,low energy loss and high reliability,polymer dielectrics are widely used in flexible electronics,capacitors and large-scale power transmission equipment[1–5]...