Guangdong Fenghua Advanced Technology Holding Co., Ltd.

Dehong Chen

Zhenxiao Fu

Shiwo Ta

Xiuhua Cao

Yun Liu

Terry James Frankcombe

Haidong Ren

Jianmei Liu

The present invention discloses a multiphase ceramic material with a giant dielectric constant, wherein the multiphase ceramic material has a general formula of ABTiO; wherein A is at least one selected from the group consisting of Nb, Ta, V, Mo, and Sb, B is at least one selected from the group consisting of In, Ga, Al, Co, Cr, Sc, Fe (III), and a trivalent rare-earth cation; n is a molar ratio of B to A, 1<n≤5, 0<x≤0.1. The multiphase ceramic material possesses outstanding properties including a giant dielectric constant, a low dielectric loss, and excellent frequency- and temperature-stability. In particular, it exhibits a high insulation resistivity of higher than 10Ω·cm and a high breakdown voltage, which implies it can be applied in high-energy storage devices and supercapacitors. This invention also provides a method to synthesize the multiphase ceramic material.

Multiphase ceramic material with giant dielectric constant, and preparation method thereof

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Canberra, Australia

Dehong Chen