TY - JOUR
T1 - Bimetallic organic framework NiFeMOF driven by tiny Ag particles for PVDF dielectric composites
AU - Guan, Lizhu
AU - Weng, Ling
AU - Chen, Nan
AU - Kannan, Haripriya
AU - Li, Qiong
AU - Zhang, Xiaorui
AU - Wu, Zijian
AU - Ma, Yingyi
AU - Sahu, Ayaskanta
N1 - Funding Information:
This work was funded by the National Natural Science Foundation of China (No. 51677045), the outstanding young talents project of Harbin University of Science and Technology (2019-KYYWF-0206), and the Harbin Science and Technology Innovation Talents Project (No. 2016RAQXJ059). The author Lizhu Guan thanks financial support from the China Scholarship Council (201808230282). Work by the author Haripriya Kannan was (partially) supported by the Schlumberger Foundation Faculty for the Future Program. We thank Sheng Zhang at the CUNY Advanced Science Research Center for the SEM and TEM tests. We also like to thank Tony Hu from the Department of Chemistry of New York University for his assistance in X-ray analysis.
Funding Information:
This work was funded by the National Natural Science Foundation of China (No. 51677045), the outstanding young talents project of Harbin University of Science and Technology (2019-KYYWF-0206), and the Harbin Science and Technology Innovation Talents Project (No. 2016RAQXJ059). The author Lizhu Guan thanks financial support from the China Scholarship Council (201808230282). Work by the author Haripriya Kannan was (partially) supported by the Schlumberger Foundation Faculty for the Future Program. We thank Sheng Zhang at the CUNY Advanced Science Research Center for the SEM and TEM tests. We also like to thank Tony Hu from the Department of Chemistry of New York University for his assistance in X-ray analysis.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/8
Y1 - 2021/8
N2 - Two-dimensional (2D) anisotropic ferroelectric nanoparticles are considered as potential candidates in polymer-based dielectric energy storage materials. We successfully synthesized a new class of Ag@NiFeMOF 2D ferroelectric hybrid nanoplates and added it to PVDF matrix to prepare Ag@NiFeMOF/PVDF composites (MOF = metal-organic framework). The morphology of composites reveals that Ag atoms are uniformly dispersed in the nanoplates as 14 nm clusters. The discharge energy storage density of composites shows a remarkable improvement of over 610% compared to the pure PVDF sample and reaches a value of 8.01 J/cm3 (η = 64%). We hypothesize that the bimetallic NiFeMOF exhibits a stronger electric dipole moment than the monometallic NiMOF under the strengthening effect of Ag particles, which improves the polarization ability of composites. In addition, under high electric field strength, the Ag-induced Coulomb blocking effect in NiFeMOF nanoplates inhibits the migration of electrons, improves the electric field breakdown strength, and thereby increases the energy storage ability of the composites.
AB - Two-dimensional (2D) anisotropic ferroelectric nanoparticles are considered as potential candidates in polymer-based dielectric energy storage materials. We successfully synthesized a new class of Ag@NiFeMOF 2D ferroelectric hybrid nanoplates and added it to PVDF matrix to prepare Ag@NiFeMOF/PVDF composites (MOF = metal-organic framework). The morphology of composites reveals that Ag atoms are uniformly dispersed in the nanoplates as 14 nm clusters. The discharge energy storage density of composites shows a remarkable improvement of over 610% compared to the pure PVDF sample and reaches a value of 8.01 J/cm3 (η = 64%). We hypothesize that the bimetallic NiFeMOF exhibits a stronger electric dipole moment than the monometallic NiMOF under the strengthening effect of Ag particles, which improves the polarization ability of composites. In addition, under high electric field strength, the Ag-induced Coulomb blocking effect in NiFeMOF nanoplates inhibits the migration of electrons, improves the electric field breakdown strength, and thereby increases the energy storage ability of the composites.
KW - A. Energy materials
KW - A. Polymer-matrix composites
KW - B. Electrical properties
KW - C. Finite element analysis
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U2 - 10.1016/j.compositesa.2021.106432
DO - 10.1016/j.compositesa.2021.106432
M3 - Article
AN - SCOPUS:85105697437
SN - 1359-835X
VL - 147
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
M1 - 106432
ER -