TY - JOUR

T1 - Improved energy storage performance of bismuth sodium titanate-based lead-free relaxor ferroelectric ceramics via Bi-containing complex ions doping

AU - Shi, Wen-Jing

AU - Zhang, Lei-Yang

AU - Yang, Yu-Le

AU - Alikin, D. O.

AU - Shur, V. Ya.

AU - Wei, Xiao-Yong

AU - Du, Hong-Liang

AU - Jin, Li

N1 - This work was financially supported by the National Natural Science Foundation of China (No. 52172127), the International Cooperation Project of Shaanxi Province, China (No. 2022KWZ-22), the National Key Research and Development Program of China (Nos. 2021YFE0115000 and 2021YFB3800602), the Fundamental Research Funds for the Central Universities (No. XJTU), the Natural Science Basis Research Plan in Shaanxi Province of China (No. 2020JM-635), the Youth Innovation Team of Shaanxi Universities and Scientific Research Program Funded by Shaanxi Provincial Education Department (No. 21JK0869). SEM work was done at International Center for Dielectric Research (ICDR), Xi'an Jiaotong University, Xi'an, China.

PY - 2023/5/1

Y1 - 2023/5/1

N2 - Lead-free dielectric ceramics can be used to make quick charge–discharge capacitor devices due to their high power density. Their use in advanced electronic systems, however, has been hampered by their poor energy storage performance (ESP), which includes low energy storage efficiency and recoverable energy storage density (Wrec). In this work, we adopted a combinatorial optimization strategy to improve the ESP in (Bi0.5Na0.5)TiO3 (BNT)-based relaxor ferroelectric ceramics. To begin, the Bi-containing complex ions Bi(Mg2/3Nb1/3)O3 (BMN) were introduced into a BNT-based matrix in order to improve the diffuse phase transition, increase Bi−O bond coupling, avoid macro domain development, and limit polarization response hysteresis. Second, the viscous polymer process was employed to reduce sample thickness and porosity, resulting in an apparent increase in breakdown strength in (1 − x)[0.7(Bi1/2Na1/2)TiO3]-0.3SrTiO3-xBi(Mg2/3Nb1/3)O3 (BS-xBMN) ceramics. Finally, in x = 0.20 composition, an amazing Wrec of 5.62 J·cm−3 and an ultra-high efficiency of 91.4% were simultaneously achieved at a relatively low field of 330 kV·cm−1, together with remarkable temperature stability in the temperature range of 30–140 °C (3.5 J·cm−3 ± 5% variation). This research presents a new lead-free dielectric material with superior ESP for use in pulsed power capacitors.

AB - Lead-free dielectric ceramics can be used to make quick charge–discharge capacitor devices due to their high power density. Their use in advanced electronic systems, however, has been hampered by their poor energy storage performance (ESP), which includes low energy storage efficiency and recoverable energy storage density (Wrec). In this work, we adopted a combinatorial optimization strategy to improve the ESP in (Bi0.5Na0.5)TiO3 (BNT)-based relaxor ferroelectric ceramics. To begin, the Bi-containing complex ions Bi(Mg2/3Nb1/3)O3 (BMN) were introduced into a BNT-based matrix in order to improve the diffuse phase transition, increase Bi−O bond coupling, avoid macro domain development, and limit polarization response hysteresis. Second, the viscous polymer process was employed to reduce sample thickness and porosity, resulting in an apparent increase in breakdown strength in (1 − x)[0.7(Bi1/2Na1/2)TiO3]-0.3SrTiO3-xBi(Mg2/3Nb1/3)O3 (BS-xBMN) ceramics. Finally, in x = 0.20 composition, an amazing Wrec of 5.62 J·cm−3 and an ultra-high efficiency of 91.4% were simultaneously achieved at a relatively low field of 330 kV·cm−1, together with remarkable temperature stability in the temperature range of 30–140 °C (3.5 J·cm−3 ± 5% variation). This research presents a new lead-free dielectric material with superior ESP for use in pulsed power capacitors.

UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=85144196795

UR - https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=tsmetrics&SrcApp=tsm_test&DestApp=WOS_CPL&DestLinkType=FullRecord&KeyUT=000900087800002

U2 - 10.1007/s12598-022-02176-x

DO - 10.1007/s12598-022-02176-x

M3 - Article

VL - 42

SP - 1472

EP - 1482

JO - Rare Metals

JF - Rare Metals

SN - 1001-0521

IS - 5

ER -