Temperature-dependent energy storage characterization of Pb-free relaxor ferroelectrics

Journal of Advanced Dielectrics

卷:10

Guang-Ping Zheng¹  Asif Khan²  Banaras Khan²  Muhammad Riaz Khan²  Sarir Uddin³ 

[1] Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong;

[2] Department of Physical and Numerical Sciences, Qurtuba University of Science & Information Technology, Peshawar 25000, Khyber Pakhtunkhwa, Pakistan;

[3] Department of Physics, Government College Hayatabad, Peshawar 25124, Khyber Pakhtunkhwa, Pakistan;

关键词: lead-free;    perovskites;    relaxor;    antiferroelectrics;    energy storage;   

DOI  :  10.1142/S2010135X20500095

来源: DOAJ

【 摘 要 】

The energy storage properties of (1−x)Bi0.5Na0.5TiO3–xBaTiO3(0≤x≤0.08) (BNT–BT) ceramics obtained via sol–gel method are determined from the polarization versus electric field (P–E) loops at various temperatures. The energy storage densities are observed to increase with increase in temperature and this may be attributed to the presence of antiferroelectric (AFE) phase at higher temperature (≥120∘C). Obvious changes are observed in the saturation polarization (Ps) and remnant polarization (Pr) with increasing temperature. The maximum energy storage density of 0.6J/cm3 is observed for x=0.06 in the AFE phase at 150∘C for 90kV/cm of applied electric field. BNT–BT can be a promising candidate for energy storage devices to be used in above-room-temperature environment.

【 授权许可】

Unknown