Journal
ACS APPLIED ENERGY MATERIALS
Volume 1, Issue 9, Pages 5016-5023Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.8b01001
Keywords
BaTiO3; ceramics; multilayers; dielectrics; energy storage; capacitors
Funding
- National Natural Science Foundation of China [U1632146]
- Young Star Project of Science and Technology of Shaanxi Province [2016KJXX-34]
- Key Basic Research Program of Shaanxi Province [2017GY-129]
- Fundamental Research Funds for the Central University
- 111 Project of China [B14040]
- Engineering and Physical Science Research Council [EP/L017563/1]
- EPSRC [EP/N010493/1, EP/L017563/1] Funding Source: UKRI
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BaTiO3-based materials show great promise for energy storage capacitors, but their low breakdown strength and high remnant polarization currently result in relatively low energy density. Here, we report a novel (1-x)BaTiO3-xBi(Li0.5Ta0.5)O-3 (0.06 <= x <= 0.12, BT-xBLT) lead-free ceramic with electric field (E) similar to 280 kV cm(-1), discharge energy density (W-e) similar to 2.2 J cm(-3), charge-discharge efficiency (eta) > 89% that is thermally stable up to 160 degrees C and with a fast discharge time (< 0.5 mu s). Multilayers of compositions with x = 0.1 also exhibited high W-e = 4.05 J cm(-3) and eta = 95.5%, demonstrating their potential for energy storage.
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