Enhanced energy storage density and high efficiency of lead-free Ca1-xSrxTi1-yZryO3 linear dielectric ceramics |
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| Affiliation: | 1. School of Materials Science and Engineering, Shaanxi University of Science & Technology, 710021, Xi’an, China;2. School of Materials and Energy, Southwest University, 400715, Chongqing, China;1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China;2. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Material Science and Engineering, Wuhan University, Wuhan 430070, Hubei, China;3. Materials Research Institute, Pennsylvania State University, University Park, PA 16802, USA;1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, PR China;2. Materials Research Institute, Pennsylvania State University, University Park, PA 16802, USA;1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China;2. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China;3. Laboratory for Research in Advanced Materials, Department of Physics, University of Science and Technology Bannu, Township Bannu, 28100, KPK, Pakistan;4. Center for Materials Science, Islamia College Peshawar, 25120, Khyber Pakhtunkhawa, Pakistan;5. College of Natural and Mathematical Sciences, The University of Dodoma, P.O. Box 338, Dodoma, Tanzania |
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| Abstract: | Ca1-xSrxTi1-yZryO3 (0.40 ≤ x ≤ 0.60, 0.1 ≤ y ≤ 0.4) ceramic samples were fabricated by conventional solid state method. The microstructure of ceramic samples were studied by XRD and SEM, and the influence of Zr4+ doping on the electric properties and energy storage performances were systematically studied. The results showed that the introduction of Zr4+ results in an inhibition of interfacial polarization and enhancement of grain boundary barrier effect. Ca0.5Sr0.5Ti1-yZryO3 ceramic samples exhibit excellent energy storage properties, with breakdown strength being on the order of 390 kV/cm versus 280 kV/cm for the counterpart Ca0.5Sr0.5TiO3 ceramic samples, together with energy efficiency above 95%. Meanwhile, a maximum breakdown strength of 390 kV/cm, a high energy storage density of 2.05 J/cm3 and an ultrahigh energy efficiency of 85% at high temperature of 125 ℃ were obtained in the sample with y = 0.1 as well, indicating it as a good candidate for linear energy storage fileds. |
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| Keywords: | Linear dielectric Energy storage performance |
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