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基于甲基纤维素-聚乙烯吡咯烷酮并浸渍钾盐的新型固体聚合物电解质：离子传导与热性能

Innovative Methylcellulose-Polyvinyl Pyrrolidone-Based Solid Polymer Electrolytes Impregnated with Potassium Salt: Ion Conduction and Thermal Properties.

作者信息

Adam Abdullahi Abbas, Ali Mohammed Khalil Mohammed, Dennis John Ojur, Soleimani Hassan, Shukur Muhammad Fadhlullah Bin Abd, Ibnaouf Khalid Hassan, Aldaghri Osamah A, Ibrahem Moez A, Abdel All Naglaa F M, Bashir Abdulkadir Abubakar

机构信息

Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Malaysia.

Centre of Innovative Nanoscience and Nanotechnology (COINN), Universiti Teknologi PETRONAS, Seri Iskandar 32610, Malaysia.

出版信息

Polymers (Basel). 2022 Jul 28;14(15):3055. doi: 10.3390/polym14153055.

DOI:10.3390/polym14153055
PMID:35956570
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9370478/
Abstract

In this research, innovative green and sustainable solid polymer electrolytes (SPEs) based on plasticized methylcellulose/polyvinyl pyrrolidone/potassium carbonate (MC/PVP/KCO) were examined. The MC/PVP/KCO SPE system with five distinct ethylene carbonate (EC) concentrations as a plasticizer was successfully designed. Frequency-dependent conductivity plots were used to investigate the conduction mechanism of the SPEs. Electrochemical potential window stability and the cation transfer number of the SPEs were studied via linear sweep voltammetry (LSV) and transference number measurement (TNM), respectively. Additionally, the structural behavior of the SPEs was analyzed using Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), X-ray diffractometry (XRD), and differential scanning calorimetry (DSC) techniques. The SPE film complexed with 15 wt.% EC measured a maximum conductivity of 3.88 × 10 Scm. According to the results of the transference number examination, cations that record a transference number of 0.949 are the primary charge carriers. An EDLC was fabricated based on the highest conducting sample that recorded a specific capacitance of 54.936 Fg at 5 mVs.

摘要

在本研究中，对基于增塑甲基纤维素/聚乙烯吡咯烷酮/碳酸钾（MC/PVP/KCO）的新型绿色可持续固体聚合物电解质（SPEs）进行了研究。成功设计了具有五种不同碳酸亚乙酯（EC）浓度作为增塑剂的MC/PVP/KCO SPE体系。使用频率依赖性电导率图来研究SPEs的传导机制。分别通过线性扫描伏安法（LSV）和迁移数测量（TNM）研究了SPEs的电化学势窗稳定性和阳离子迁移数。此外，使用傅里叶变换红外光谱（FTIR）、场发射扫描电子显微镜（FESEM）、X射线衍射仪（XRD）和差示扫描量热法（DSC）技术分析了SPEs的结构行为。与15 wt.% EC络合的SPE膜测得的最大电导率为3.88×10 S/cm。根据迁移数测试结果，迁移数为0.949的阳离子是主要电荷载体。基于最高导电样品制备了一个双电层电容器，在5 mV/s时记录的比电容为54.936 F/g。

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