Kela Materials presents Calcium Copper Titanate (CCTO) — a leading high-permittivity ceramic material widely used in advanced capacitors and energy-storage components. CCTO is known for its extremely high dielectric constant, enabling large energy storage capacity. It maintains strong dielectric stability (ε’ ≈ 10⁶–10³) across a wide temperature range (100–600 K). When cooled to 100 K, the dielectric constant decreases sharply (ε’ ≈ 100), which is essential for evaluating temperature-dependent performance.
CCTO’s combination of giant permittivity, stable dielectric behaviour, wide operating temperature range, and excellent processability makes it one of the best ceramic materials for next-generation high-energy capacitors and miniaturised components.
Extremely high dielectric constant (high-k) suitable for ultra-compact capacitor design
Excellent thermal stability and reliable performance across wide temperature ranges
Ideal for high-density capacitors, thin-film devices, MEMS, and next-generation microelectronics
High breakdown strength and strong insulation characteristics
Kela Materials’ proprietary modification technology further reduces dielectric loss, achieving loss tangent values as low as 0.9%
Q1: What is Calcium Copper Titanate (CCTO)?
A: CCTO is a high-permittivity ceramic material with a giant dielectric constant, making it ideal for compact capacitors, energy-storage modules, and microelectronic components.
Q2: Why does CCTO have such a high dielectric constant?
A: Its perovskite-related crystal structure enables internal barrier layer capacitance (IBLC), resulting in extremely high permittivity values (ε’ ≈ 10⁶–10³).
Q3: What happens to CCTO at low temperatures?
A: At around 100 K, the dielectric constant drops significantly (to ~100), which is important for evaluating temperature-dependent device performance.
Q4: What industries use CCTO?
A: Capacitors, supercapacitors, photovoltaics, DRAM/GB-DRAM, microelectronics, power electronics, and smart-grid energy storage.
Q5: What advantages does Kela Materials' CCTO offer?
A: Improved dielectric loss (as low as 0.9%), stable particle morphology, reliable performance, and suitability for high-density capacitor manufacturing.
Q6: Is CCTO safe and non-hazardous?
A: Yes. CCTO is a ceramic oxide material with stable inorganic composition and is classified as non-hazardous for international shipping.
Application area
Solar photovoltaic energy-storage modules
Capacitors, supercapacitors, and dielectric energy-storage components
Electronic circuits and high-density microelectronic devices
DRAM / GB-DRAM thin-film components
Smart grids, energy-storage modules, and DC link capacitors
Power electronics requiring high-k ceramic materials