 LEED-HAFNATE, PBHFO3, a promising antiferroelectric material, has been shown to have excellent energy storage properties over a wide temperature range. At room temperature, PBHFO3 exhibits an antiferroelectric loop, allowing for efficient energy storage. At higher temperatures, the material transforms into an intermediate phase, which also displays antiferroelectric behavior. This phase transition allows for even greater energy storage capacity, with a maximum recovery rate of 2.7 joules per cubic centimeter at 235 kilovolts per centimeter. This article was authored by the Di Chaohan, Bai Xiaowang, and Zwei Guangyi.