Flexible composite mechanical energy harvester from a ferroelectric organoamino phosphonium salt

TitleFlexible composite mechanical energy harvester from a ferroelectric organoamino phosphonium salt
Publication TypeJournal Article
Year of Publication2018
AuthorsVijayakanth, T, Srivastava, AKumar, Ram, F, Kulkarni, P, Shanmuganathan, K, Praveenkumar, B, Boomishankar, R
JournalAngewandte Chemie-International Edition
Volume57
Issue29
Pagination9054-9058
Date PublishedJUL
ISSN1433-7851
Keywordsbinary phosphonium salts, energy conversion, ferroelectricity, hydrogen bonding, polymer composites
Abstract

A new binary organic salt diphenyl diisopropylamino phosphonium hexaflurophosphate (DPDPPF6) 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-HF interactions. Ferroelectric measurements on the single crystals of DPDPPF6 gave a well-saturated rectangular hysteresis loop with a remnant (P-r) polarization value of 6Ccm(-2). Further, composite devices based on polydimethylsiloxane (PDMS) films for various weight percentages (3, 5, 7, 10 and 20wt%) of DPDPPF6 were prepared and examined for power generation by using an impact test setup. A maximum output peak-to-peak voltage (V-PP) of 8.5V and an output peak-to-peak current (I-PP) of 0.5A was obtained for the non-poled composite film with 10wt% of DPDPPF6. These results show the efficacy of organic ferroelectric substances as potential micropower generators.

DOI10.1002/anie.201805479
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

11.994

Divison category: 
Polymer Science & Engineering