Ferroelectrics enhanced electrochemical energy storage system

Since the discovery of Rochelle salt about a century ago, ferroelectrics have been researched extensively because of their robust responses to the thermal, optical, electrical and mechanical fields. Furthermore, these researches about ferroelectric materials have been progressively extended to more diverse fields because of their unique chemical and physical properties. In this review, the most recent research progress related to the utilization of ferroelectrics in electrochemical storage systems has been summarized. First, the basic knowledge of ferroelectrics is introduced. Second, according to the order from the cathode side, the separator membrane to the anode side, the improved performance, the role of ferroelectric polarization and piezoelectric effect upon the energy storage and conversion process originated from the ferroelectric materials are revealed and discussed. Furthermore, we also offer insight into how future research may more conclusively correlate these improvements with the ferroelectricity/piezoelectricity of the ferroelectric additives. Accordingly, further progress in understanding ferroelectric physics/chemistry is expected to offer more constructive guidance about the research and development of advanced electrochemical energy storage systems.