Facing the increasingly serious energy and environmental problems, the research and development of new energy storage technology and environment-friendly energy storage materials are imminent. As a typical lead-free ferroelectric with excellent dielectric properties, (Bi,Na)TiO₃ (BNT) is supposed to be the most potential and competitive environment-friendly ceramic material and has become a research hotspot for dielectric energy storage in recent years. This paper first briefly introduces the basic physical principles and energy storage performance evaluation parameters of dielectric energy storage materials, then summarizes the critical research systems and related progress of BNT-based lead-free energy storage materials (bulk ceramics, films and multilayer ceramics) from the aspects of ions doping modification and multi-component composite optimization, and finally looks forward to the improvement direction and energy storage application prospect of BNT-based lead-free relaxor ferroelectric materials.

面对日益严峻的能源和环境问题，新型储能技术和环境友好型储能材料的研发迫在眉睫。_{(Bi,Na)TiO 3} (BNT)作为一种典型的无铅铁电体，具有优异的介电性能，被认为是最具潜力和竞争力的环保陶瓷材料，近年来已成为介电储能领域的研究热点。本文首先简要介绍了介电储能材料的基本物理原理和储能性能评价参数，然后从BNT基无铅储能材料（块状陶瓷、薄膜和多层陶瓷）的关键研究体系和相关进展进行了总结。从离子掺杂改性和多组分复合优化等方面进行了研究，最后展望了BNT基无铅弛豫铁电材料的改进方向和储能应用前景。