Kang, Han Byul Han, Chan Su Pyun, Jae Chul Ryu, Won Hyoung Kang, Chong-Yun Cho, Yong Soo 2024-01-20T07:03:00Z 2024-01-20T07:03:00Z 2021-09-04 2015-05-06 0266-3538 https://pubs.kist.re.kr/handle/201004/125454 Piezoelectric composite nanofibers based on (Na-0.5,K-0.5)NbO3 (NKN) nanoparticles embedded in poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] polymer are investigated in terms of their performance as nanogenerators. Perovskite NKN nanoparticles with similar to 30-105 nm were separately prepared by combustion synthesis using polyacrylic acid (PAA) as a fuel. Surface modification of nanoparticles by tetradecylphosphonic acid (TDPA) was essential to secure proper adhesion with the polymer in the nanofibers prepared by electrospinning. Location-dependent piezoelectricity measurements confirmed that the region of embedded NKN filler particles exhibited better piezoelectricity than the P(VDF-TrFE) matrix region. Energy harvesting performance of the flexible composite nanogenerator demonstrated similar to 0.98 V output voltage and similar to 78 nA output current, which were enhanced depending on the volume fraction of the NKN nanoparticles dispersed in the polymer. (C) 2015 Elsevier Ltd. All rights reserved. English ELSEVIER SCI LTD SODIUM-POTASSIUM NIOBATE POLY(VINYLIDENE FLUORIDE) POLYMER NANOCOMPOSITES BATIO3 NANOPARTICLES ACID FIBERS FILMS SIZE (Na,K)NbO3 nanoparticle-embedded piezoelectric nanofiber composites for flexible nanogenerators Article 10.1016/j.compscitech.2015.02.015 1 COMPOSITES SCIENCE AND TECHNOLOGY, v.111, pp.1 - 8 COMPOSITES SCIENCE AND TECHNOLOGY 111 1 8 scie scopus 000353087700001 2-s2.0-84924113492 Materials Science, Composites Materials Science Article SODIUM-POTASSIUM NIOBATE POLY(VINYLIDENE FLUORIDE) POLYMER NANOCOMPOSITES BATIO3 NANOPARTICLES ACID FIBERS FILMS SIZE Nanocomposites Functional composites Electrical properties