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High-performance BaZr0.35Ti0.65O3 thin film capacitors with ultrahigh energy storage density and excellent thermal stability

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Abstract

The ability to work at ultralow (−90 °C) or ultrahigh (200 °C) temperature with superior energy storage properties is essential for dielectric capacitors to operate in harsh environments. Here, we realized an ultrahigh recoverable energy density (Wrec) (78.7 J cm−3) and efficiency (η) (80.5%) in BaZr0.35Ti0.65O3 film capacitors through enhancing the breakdown electric field strength at room temperature. Moreover, the BaZr0.35Ti0.65O3 film capacitor exhibits great energy storage properties when measured from −150 °C to 200 °C. Wrec and η can reach the value of 41.9 J cm−3 and 66.4% under an electric strength of 4.0 MV cm−1 even at 200 °C, respectively. Especially, the variation of both Wrec and η at 200 °C during 1 × 106 cycles (ferroelectric fatigue tests) is less than 3%. All these reveal that the BZT film capacitor is a commendable material for application in equipment working in harsh environments.

Graphical abstract: High-performance BaZr0.35Ti0.65O3 thin film capacitors with ultrahigh energy storage density and excellent thermal stability

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Publication details

The article was received on 20 Dec 2017, accepted on 01 Apr 2018 and first published on 02 Apr 2018


Article type: Paper
DOI: 10.1039/C7TA11109F
Citation: J. Mater. Chem. A, 2018, Advance Article
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    High-performance BaZr0.35Ti0.65O3 thin film capacitors with ultrahigh energy storage density and excellent thermal stability

    Z. Liang, M. Liu, C. Ma, L. Shen, L. Lu and C. Jia, J. Mater. Chem. A, 2018, Advance Article , DOI: 10.1039/C7TA11109F

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