A Prime Lead-Free Ferroelectric Ceramic for Thermal Energy Harvesting: 0.88Bi(0.5)Na(0.5)TiO(3)-.02SrTiO(3)-0.1Bi(0.5)Li(0.5)TiO(3)

作者：Sao Reshma; Vats Gaurav; Vaish Rahul^*

来源：Ferroelectrics, 2015, 474(1): 1-7.

DOI：10.1080/00150193.2015.996041

• ferroelectric ceramics
• Lead free
• Olsen cycle
• energy harvesting

Present study unfurls the colossal energy harvesting potential of lead-free 0.88Bi(0.5)Na(0.5)TiO(3)-.02SrTiO(3)-0.1Bi(0.5)Li(0.5)TiO(3) (BNT-ST-BLT) bulk ceramic using Olsen cycle. This material has been reported for its excellent ferroelectric properties in various aspects. The maximum harness-able energy density for this composition is found to be 2130 J/L in the temperature spectrum of 20-140 degrees C and applied electric field of 0.1-6.0 MV/m. We found that the energy density of this material is 2.6times higher than the maximum energy density documented for any lead-based ferroelectric ceramics reported to date. Prior to the present study, 8/65/35 PLZT (thick films) was reported for the highest energy density of 888 J/L (temperature range: 25-160 degrees C; applied electric field: 0.2-7.5 MV/m).

• 出版日期2015-1-2