Work

Modified Si3N4 filler enhancing the energy storage performance and thermal stability of a P( VDF ‐ HFP ) based composite

Year: 2024

Type: article

Abstract: To improve the high‐temperature stability of poly(vinylidene fluoride hexafluoropropylene) P(VDF‐HFP)‐based composite film for its potential application in energy storage, the modified silicon nitride (mSi3N4) nanoparticles are fabricated using silane coupling agent (KH‐570) and introduced into P(VDF‐HFP). When the mass fraction of mSi3N4 is 7.5 wt%, the recoverable energy density (Wrec) of the mSi3N4/ P(VDF‐HFP) composite film reaches to 1.79 J/cm3 under a 125 MV/m electric field, which is 82.7% higher than pure P(VDF‐HFP). Interestingly, the dielectric properties of mSi3N4/P(VDF‐HFP) show a considerable thermal stability at a high‐frequency ranging from −20 to 160°C, providing an effective approach for preparing energy storage composites working for high‐temperature environments.

Source: Journal of Applied Polymer Science

DOI: 10.1002/app.56472

Authors: Zi Yang, Weimin Xia, Shiyu Zhang, Xiaofang Zhang, Xinyi Zhang

Institution: Xi'an University of Technology

Language: English

Topic: Dielectric materials and actuators

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: bronze

Funders: National Natural Science Foundation of China, Education Department of Shaanxi Province, National Key Research and Development Program of China