Novel Ultrahigh-Performance ZnO-Based Varistor Ceramics.

ABSTRACT: The nonlinear response of a material to an external stimulus is vital in fundamental science and technical applications. The power-law current-voltage relationship of a varistor is one such example. An excellent example of such behavior is the power-law current-voltage relationship exhibited by Bi₂O₃-doped ZnO varistor ceramics, which are the cornerstone of commercial varistor materials for overvoltage protection. Here, we report on a sustainable, ZnO-based varistor ceramic, without the volatile Bi₂O₃, that is based on Cr₂O₃ as the varistor former and oxides of Ca, Co, and Sb as the performance enhancers. The material has an ultrahigh α of up to 219, a low I_L of less than 0.2 μA/cm², and a high <

SUBMITTER: Tian T 

PROVIDER: S-EPMC8397243 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature