Polymer‐/Ceramic‐based Dielectric Composites for Energy Storage and Conversion

Garnet-type electrolytes are attractive for lithium metal batteries due to their high ionic conductivity. A strategy to decrease interfacial impedance between a lithium metal anode and garnet electrolyte is found promising for all-solid-state batteries.

Piezoelectricity and pyroelectricity, traditionally encountered in certain single crystals and ceramics, have now also been documented in a number of polymers. Recently, one such polymer-poly(vinylidene fluoride)-and some of its copolymers have been shown to be ferroelectric as well. The extraordinary molecular and supermolecular structural requirements for ferroelectric behavior in polymers are discussed in detail, with particular emphasis on poly(vinylidene fluoride). Piezoelectric, pyroelectric, and ferroelectric properties are also briefly reviewed, as are some promising applications of such polymers.