Ferroelectric Materials for High Energy Density Batteries: Progress and Outlook

Accelerating the development of revolutionary high-energy battery technology is essential for strengthening competitiveness in advanced battery innovation and achieving carbon-free electricity. Unfortunately, poor ion transport greatly hinders the commercialization of high energy density batteries. Owing to the unique noncentrosymmetric crystal structure and the spontaneous polarization, ferroelectric materials hold great potential in promoting ion transport and hence enhancing reaction kinetics. In this work, the research progress on ferroelectric materials for high energy density batteries is systematically reviewed. The fundamental understanding of ferroelectric materials, including the development history, classification, and working mechanism, is first introduced. Second, the challenges of each component in high energy density batteries are analyzed. Based on this, the modification strategies of utilizing ferroelectric materials to improve the ion transport kinetics are summarized. Finally, the existing problems and development directions of ferroelectric materials are put forward, shining light on future advances in practical batteries.