High dielectric material has attracted interest in applications of triboelectric nanogenerators for its high charge-trapping capability. We reported the enhancement of both dielectric and piezoelectric properties by adding modified halloysite (HAL) into PVDF-HFP. Due to the combined effect of triboelectric generation by enhanced dielectric constant and piezoelectric generation by increase of β-phase, the HAL/PVDF-HFP composites film modified by Li⁺ and water exhibited superior generated current of 9.23×10⁻⁷ A compared to the pure PVDF-HFP with 1.65×10⁻⁷ A and unmodified HAL/PVDF-HFP with 2.68×10⁻⁷ A. This work is expected to inspire the design and fabrication of high dielectric and piezoelectric material for nanogenerators.

高电介质材料因其高的电荷捕获能力而在摩擦纳米发电机的应用中引起了人们的兴趣。我们报告了通过向PVDF-HFP中添加改性的埃洛石（HAL）来增强介电和压电性能。由于通过增加介电常数产生的摩擦生电和通过增加β相产生的压电学的综合作用，与锂离子电池相比，Li ⁺和水改性的HAL / PVDF-HFP复合膜表现出了更好的9.23×10 ^-7 A的产生电流。具有1.65×10 ^-7 A的纯PVDF-HFP和具有2.68×10 ^-7 A的未改性HAL / PVDF-HFP 。这项工作有望激发纳米发电机高介电和压电材料的设计和制造。