Cold sintered composites consisting of PEEK and metal oxides with improved electrical properties via the hybrid interfaces

The manipulation of interfacial structures offers an effective route to improve the physical and chemical properties materials. However, it is challenging design ceramic-based composites with hybrid interfaces involved organics inorganics through conventional sintering technique, due incompatibility these materials at high temperatures. Here, we propose a strategy integrate poly-ether-ether-ketone together several metal-oxide additives into zinc oxide (ZnO) form composite varistors via cold process. Nanoscale layers are dispersed between densified ZnO grain forming Schottky barriers, which dramatically improves electrical resulted composites. Compared pure ZnO, breakdown electric field 0.1 mA mm −2 reaches over 13 kV −1 . Particularly, shows switch-like effect similar switching devices, extraordinarily nonlinear coefficient 375. In addition, elastic module decreases addition PEEK. Given flexibility in dopants polymers metal oxides, this work provides unique superior performances.