Dielectric ceramics, as crucial materials for energy storage capacitors, are widely used in new energy vehicles and high-power pulsed devices. However, they suffer from low energy storage capacity and poor temperature stability, which have posed major challenges for their further development.

Current research on dielectric energy storage ceramics mainly focuses on ferroelectric materials with a perovskite structure. Tetragonal tungsten bronzes (TTBs) ferroelectrics, the second largest category of ferroelectrics after perovskites, have received less attention due to their complex crystal structure and relatively poor performance in dielectric energy storage.

Professor Lou Xiaojie from Xi'an Jiaotong University (XJTU) and collaborators have enhanced the high-temperature energy storage performance of tetragonal tungsten bronze dielectric ceramics using high-entropy strategies and bandgap engineering, building on their previous work (Adv. Mater. 2024,36, 2310559). Their research provides an effective method for designing tetragonal tungsten bronze dielectric ceramics with ultra-high comprehensive energy storage performance, offering new ideas and possibilities for future development in the field of dielectric energy storage.

Their research findings were published in the renowned journal Nature Communications under the title "Optimizing High-Temperature Energy Storage in Tungsten Bronze-Structured Ceramics via High-Entropy Strategy and Bandgap Engineering".