储能电容无机电介质薄膜研究进展

Research Progress of Inorganic Dielectric Thin Films for Capacitive Energy Storage

无机电介质薄膜相对有机电介质材料具有更高的工作温度范围,相对无机块体陶瓷材料又有更高的击穿场强和储能密度,因而近年来受到研究者的关注.从无机电介质薄膜材料的5种类型:顺电薄膜、铁电薄膜、弛豫铁电薄膜、反铁电薄膜和线性电介质薄膜,分类综述了过去10余年这个领域优化其储能性能的手段与思路,从不同尺度归纳无机电介质薄膜的储能改性策略,最后展望发展趋势,如应用场景的挖掘、能量效率与能量密度的平衡和多尺度改性等.

Inorganic dielectric thin films possess a higher operation temperature range compared with organic counterparts,a higher breakdown strength and energy density compared with bulk ceramics,and thus receive extensive attention.This paper reviews the methods for improving the energy storage performance of inorganic dielectric thin films with different polarization behaviors including paraelectric,ferroelectric,relaxor ferroelectric,antiferroelectric,and linear dielectric in the past decade,summarizes the strategies for enhancing the energy storage performance of inorganic dielectric thin films in different scales,and finally discusses the future develop-ment trend in the field involving the development of application scenarios,the balance of energy density and energy efficiency,and multiscale optimization.