Large polarization and record-high performance of energy storage induced by a phase change in organic molecular crystals.

ABSTRACT: Dielectrics that undergo electric-field-induced phase changes are promising for use as high-power electrical energy storage materials and transducers. We demonstrate the stepwise on/off switching of large polarization in a series of dielectrics by flipping their antipolar or canted electric dipoles via proton transfer and inducing simultaneous geometric changes in their π-conjugation system. Among antiferroelectric organic molecular crystals, the largest-magnitude polarization jump was obtained as 18 μC cm^-2 through revisited measurements of squaric acid (SQA) crystals with improved dielectric strength. The second-best polarization jump of 15.1 μC cm^-2 was achieved with a newly discovered antiferroelectric, furan-3,4-dicarboxylic acid. The field-induced dielect

SUBMITTER: Horiuchi S 

PROVIDER: S-EPMC8565377 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature