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A Flexible Composite Mechanical Energy Harvester from a Ferroelectric Organoamino Phosphonium Salt
Author(s) -
Vijayakanth Thangavel,
Srivastava Anant Kumar,
Ram Farsa,
Kulkarni Priyangi,
Shanmuganathan Kadhiravan,
Praveenkumar Balu,
Boomishankar Ramamoorthy
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201805479
Subject(s) - ferroelectricity , composite number , materials science , polydimethylsiloxane , monoclinic crystal system , phosphonium , composite material , voltage , analytical chemistry (journal) , crystallography , chemistry , polymer chemistry , optoelectronics , crystal structure , chromatography , electrical engineering , dielectric , engineering
A new binary organic salt diphenyl diisopropylamino phosphonium hexaflurophosphate (DPDP⋅PF 6 ) was shown to exhibit a good ferroelectric response and employed for mechanical energy harvesting application. The phosphonium salt crystallizes in the monoclinic noncentrosymmetric space group Cc and exhibits an H‐bonded 1D chain structure due to N−H⋅⋅⋅F interactions. Ferroelectric measurements on the single crystals of DPDP⋅PF 6 gave a well‐saturated rectangular hysteresis loop with a remnant ( P r ) polarization value of 6 μC cm −2 . Further, composite devices based on polydimethylsiloxane (PDMS) films for various weight percentages (3, 5, 7, 10 and 20 wt %) of DPDP⋅PF 6 were prepared and examined for power generation by using an impact test setup. A maximum output peak‐to‐peak voltage ( V PP ) of 8.5 V and an output peak‐to‐peak current ( I PP ) of 0.5 μA was obtained for the non‐poled composite film with 10 wt % of DPDP⋅PF 6 . These results show the efficacy of organic ferroelectric substances as potential micropower generators.