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Angewandte Chemie. international edition v.57 no.29, 2018년, pp.9054 - 9058   SCI SCIE
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A Flexible Composite Mechanical Energy Harvester from a Ferroelectric Organoamino Phosphonium Salt

Vijayakanth, Thangavel (Department of Chemistry, Indian Institute of Science Education and Research, Pune, Dr. Homi Bhabha Road, Pune, 411008, India ) ; Srivastava, Anant Kumar (Department of Chemistry, Indian Institute of Science Education and Research, Pune, Dr. Homi Bhabha Road, Pune, 411008, India ) ; Ram, Farsa (Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India ) ; Kulkarni, Priyangi (PZT Centre, Armament Research and Development Establishment, Pune, Dr. Homi Bhabha Road, Pune, 411021, India ) ; Shanmuganathan, Kadhiravan (Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India ) ; Praveenkumar, Balu (PZT Centre, Armament Research and Development Establishment, Pune, Dr. Homi Bhabha Road, Pune, 411021, India ) ; Boomishankar, Ramamoorthy (Department of Chemistry, Indian Institute of Science E ) ;
  • 초록  

    Abstract 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.


  • 주제어

    binary phosphonium salts .   energy conversion .   ferroelectricity .   hydrogen bonding .   polymer composites.  

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