BaTiO 3 -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 )BaTiO 3 – x Bi(Li 0.5 Ta 0.5 )O 3 (0.06 ≤ x ≤ 0.12, BT– x BLT) lead-free ceramic with electric field ( E ) ∼ 280 kV cm –1, discharge energy density ( W e ) ∼ 2.2 J cm –3, charge–discharge efficiency (η) > 89% that is thermally stable up to 160 °C and with a fast discharge time (≤0.5 μs). Multilayers of compositions with x = 0.1 also exhibited high W e = 4.05 J cm –3 and η = 95.5%, demonstrating their potential for energy storage.
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Li et al. (2018) studied this question.
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