[2] [2] LI D X, ZENG X J, LI Z P, et al. Progress and perspectives in dielectric energy storage ceramics［J］. Journal of Advanced Ceramics, 2021, 10(4): 675-703.

[3] [3] GAO J H, WANG Y, LIU Y B, et al. Enhancing dielectric permittivity for energy-storage devices through tricritical phenomenon［J］. Scientific Reports, 2017, 7: 40916.

[4] [4] WANG T, JIN L, LI C C, et al. Relaxor ferroelectric BaTiO3-Bi(Mg2/3Nb1/3)O3 ceramics for energy storage application［J］. Journal of the American Ceramic Society, 2015, 98(2): 559-566.

[5] [5] LI X X, CHEN X L, LIU X B, et al. Temperature-stable dielectric properties from -56 ℃ to 248 ℃ in (1-x)BaTiO3-xBi(Mg0.5Sn0.5)O3 system［J］. Journal of Electronic Materials, 2019, 48(1): 296-303.

[6] [6] LIANG X W, ZHAO Z Y, ZHU Q Y, et al. Lead-free BaTiO3-based ceramics modified by Bi(Mg0.5Sn0.5)O3 with enhanced energy-storage performance and charge-discharge properties［J］. Journal of Materials Science: Materials in Electronics, 2021, 32(3): 3377-3390.

[7] [7] WU L W, WANG X H, LI L T. Lead-free BaTiO3-Bi(Zn2/3Nb1/3)O3 weakly coupled relaxor ferroelectric materials for energy storage［J］. RSC Advances, 2016, 6(17): 14273-14282.

[8] [8] HU Q Y, JIN L, WANG T, et al. Dielectric and temperature stable energy storage properties of 0.88BaTiO3-0.12Bi(Mg1/2Ti1/2)O3 bulk ceramics［J］. Journal of Alloys and Compounds, 2015, 640: 416-420.

[9] [9] OGIHARA H, RANDALL C A, TROLIER-MCKINSTRY S. High-energy density capacitors utilizing 0.7BaTiO3-0.3BiScO3Ceramics［J］. Journal of the American Ceramic Society, 2009, 92(8): 1719-1724.

[10] [10] WU L W, LUO B C, TIAN E K. Ferroelectric properties of BaTiO3-BiScO3 weakly coupled relaxor energy-storage ceramics from first-principles calculations［J］. Journal of Alloys and Compounds, 2021, 866: 158933.

[12] [12] SAKURAI M, KANEHARA K, TAKEDA H, et al. Wideband dielectric spectroscopy of (Sr0.7Bi0.2)TiO3 ceramics and its microscopic mechanism of polarization［J］. Journal of the Ceramic Society of Japan, 2016, 124(6): 664-667.

[13] [13] LI S Y, SHI P, ZHU X P, et al. Enhanced energy storage properties in lead-free NaNbO3-Sr0.7Bi0.2TiO3-BaSnO3 ternary ceramic［J］. Journal of Materials Science, 2021, 56(20): 11922-11931.

[14] [14] LI J L, LI F, XU Z, et al. Multilayer lead-free ceramic capacitors with ultrahigh energy density and efficiency［J］. Advanced Materials (Deerfield Beach, Fla), 2018, 30(32): e1802155.

[15] [15] DONG L, STONE D S, LAKES R S. Enhanced dielectric and piezoelectric properties of xBaZrO3-(1-x)BaTiO3 ceramics［J］. Journal of Applied Physics, 2012, 111(8): 084107.