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From Synthesis to Applications: Copper Calcium Titanate (CCTO) and Its Magnetic and Photocatalytic Properties

Sara Kawrani, Madona Boulos, David Cornu, Mikhael Bechelany

ChemistryOpen. 2019 Jul 12;8(7):922-950.

PMID: 31338276

Abstract:

Investigations focusing on electrical energy storage capacitors especially the dielectric ceramic capacitors for high energy storage density are attracting more and more attention in the recent years. Ceramic capacitors possess a faster charge-discharge rate and improved mechanical and thermal properties compared with other energy storage devices such as batteries. The challenge is to obtain ceramic capacitors with outstanding mechanical, thermal and storage properties over large temperature and frequencies ranges. ABO3 as a type of perovskites showed a strong piezoelectric, dielectric, pyroelectric, and electro-optic properties useful as energy storage and environmental devices. CaCu3Ti4O12 (CCTO) perovskite with cubic lattice (Im3 symmetry) was discovered to have a colossal dielectric constant (104) that is stable over a wide range of frequencies (10 Hz-1 MHz) and temperature independence (100-300 K). The origin of this high dielectric constant is not fully established, specially because it is the same for single crystal and thin films. In this review, the history of CCTO will be introduced. The synthesis and the sintering approaches, the dopant elements used as well as the applications of CCTO will be reported. In addition to dielectrical properties useful to energy storage devices; CCTO could serve as photocatalytic materials with a very good performance in visible light.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP12049502 Calcium titanate Calcium titanate 12049-50-2 Price
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