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首页> 外文期刊>Journal of Applied Polymer Science >Networked cellulose entrapped and reinforced PEO-based solid polymer electrolyte for moderate temperature applications
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Networked cellulose entrapped and reinforced PEO-based solid polymer electrolyte for moderate temperature applications

机译：网络化纤维素包裹和增强的基于PEO的固体聚合物电解质，适用于中等温度的应用

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摘要

A novel solid polymer electrolyte (SPE) composed of poly (ethylene oxide) (PEO) and networked cellulose (NC) is developed for moderate temperature applications typically 50 to 100°C. The SPE thus formed demonstrates enhanced strength; high thermal and appropriate electrochemical stability. NC is a high strength polymeric material with a network structure possessing open spaces in its construction. The NC open spaces shrink on drying. The SPEs are formed by solution casting different amounts of NC in dissolved PEO. NC was formed by the acid hydrolysis and regeneration of microcrystalline cellulose (MCC). SEM, TEM and in-situ optical images revealed that the dissolved PEO solidified around the suspended NC and the open structure of NC entraps PEO upon drying. NC provides structural and thermal stability to the SPE. With an addition of 15wt% NC in SPE there was about five-time increase in both tensile as well as storage modulus measured via tensile testing and Dynamic mechanical analysis (DMA) respectively. The enhancement of mechanical strength is explained using the Zener model. Cyclic voltammetry (CV) and linear sweep voltammetry (LSV) studies validated that the electrochemical stability window of PEO+15 wt %NC with salt and that of neat PEO with salt are analogous.
机译：开发了一种由聚环氧乙烷（PEO）和网状纤维素（NC）组成的新型固体聚合物电解质（SPE），适用于通常在50至100°C的中等温度下使用。这样形成的SPE表现出增强的强度。高热和适当的电化学稳定性。 NC是一种高强度聚合材料，其网络结构在其结构中具有开放空间。 NC开放空间在干燥时会收缩。通过在溶解的PEO中溶液浇铸不同量的NC来形成SPE。 NC是通过酸水解和微晶纤维素（MCC）的再生而形成的。 SEM，TEM和原位光学图像表明，溶解的PEO在悬浮的NC周围固化，而NC的开放结构在干燥后截留了PEO。 NC为SPE提供结构和热稳定性。通过在SPE中添加15wt％的NC，分别通过拉伸测试和动态力学分析（DMA）测得的拉伸模量和储能模量分别提高了约五倍。使用齐纳模型说明了机械强度的提高。循环伏安法（CV）和线性扫描伏安法（LSV）研究证实，PEO + 15 wt％NC含盐的PEO + 15％纯PEO含盐的电化学稳定性窗口相似。

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