增强基于聚合物共混物和钛酸钡纳米粒子的聚合物纳米复合材料的结构、热和介电性能，用于储能,International Journal of Energy Research

当前位置： X-MOL 学术 › Int. J. Energy Res. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

增强基于聚合物共混物和钛酸钡纳米粒子的聚合物纳米复合材料的结构、热和介电性能，用于储能
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2022-01-30 , DOI: 10.1002/er.7703
Mervet R. Atta ₁ , Norah Algethami ₂ , Mohammed O. Farea ₃ , Qana A. Alsulami ₄ , Abdulwahab Rajeh ₅

Affiliation

_{溶液浇铸和超声辅助溶液浇铸方法用于制造基于填充有不同浓度 BaTiO 3}纳米粒子的聚乙烯醇 (PVA)/聚乙烯吡咯烷酮 (PVP) 的聚合物纳米复合材料薄膜。X射线衍射（XRD）、傅里叶变换红外（FT-IR）、透射电子显微镜和差示扫描量热法（DSC）用于研究制备的聚合物纳米复合材料样品的性能。PVA/PVP-BaTiO ₃纳米复合材料的特性，如交流电导率、介电常数和介电损耗，作为 BaTiO _{3的函数进行了研究}浓度。XRD 测量表明纯聚合物共混物是半结晶的，掺杂的 PVA/PVP 混合膜的结晶度 (Xc) 低于纯共混物的结晶度。_{FT-IR 光谱的显着变化证明了 BaTiO 3}离子与 PVA/PVP 基质之间的相互作用。DSC 分析表明 PVA/PVP 具有单一的玻璃化转变温度 ( _Tg)，表明这两种聚合物是可混溶的。此外，当 BaTiO ₃ NP 的量增加时，T _g纳米复合膜的减少。所有样品的交流电导谱均服从 Jonscher 幂律。为了更好地了解电荷存储特性和电导弛豫，已经进行了介电常数和损耗研究。与 1.5 wt% BaTiO _{3纳米填料混合的 PVA/PVP 实现了~8.57 × 10}^-5 S/cm的最大离子电导率。在这项引入了一种新方法的研究中，复介电常数显示所有样品的介电常数实部 ( ε ') 远大于虚部 ( ε“）价值。预计这些结果将对各种应用产生重大影响，包括聚合物有机半导体、储能、聚合物太阳能电池和纳米电子学。

"点击查看英文标题和摘要"

Enhancing the structural, thermal, and dielectric properties of the polymer nanocomposites based on polymer blend and barium titanate nanoparticles for application in energy storage

Solution casting and ultrasonic-assisted solution-cast methods were used to create polymer nanocomposites films based on polyvinyl alcohol (PVA)/polyvinyl pyrrolidone (PVP) filled with varying concentrations of BaTiO₃ nanoparticles. The X-ray diffraction (XRD), Fourier-transform infrared (FT-IR), transmission electron microscope, and differential scanning calorimetry (DSC) were used to study the properties of the produced polymer nanocomposite samples. The properties of PVA/PVP-BaTiO₃ nanocomposites, such as ac conductivity, dielectric constant, and dielectric loss, were investigated as a function of BaTiO₃ concentration. XRD measurements demonstrate that the pure polymer blend is semi-crystalline and that the crystallinity degree (Xc) of the doped PVA/PVP mix films is lower than that of the pure blend. Significant variations in the FT-IR spectra demonstrate the interaction between the BaTiO₃ ions and the PVA/PVP matrix. The DSC analysis demonstrates that the PVA/PVP has a single glass transition temperature (T_g), showing that the two polymers are miscible. In addition, when the amount of BaTiO₃ NP's increased, the T_g of the nanocomposite films decreased. The AC conductivity spectra of all samples obey Jonscher's power law. For a better understanding of charge storage characteristics and conductivity relaxation, dielectric constant and loss investigations have been carried out. The PVA/PVP mixed with 1.5 wt% BaTiO₃ nanofiller achieves a maximum ionic conductivity of ~8.57 × 10⁻⁵ S/cm. In this investigation, which introduced a novel approach, the complex permittivity revealed that the real part value of the dielectric constant (ε′) for all samples was much bigger than the imaginary part (ε″) value. These results are predicted to have a significant influence on a variety of applications, including polymer organic semiconductors, energy storage, polymer solar cells, and nanoelectronics.

更新日期：2022-01-30

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南

全部期刊列表>>