A Proton Conductor Based on a Polymeric Complex of Poly(Ethylene Oxide)-Modified Poly(Methacrylate) with Anhydrous H3PO4
A Proton Conductor Based on a Polymeric Complex of Poly(Ethylene Oxide)-Modified Poly(Methacrylate) with Anhydrous H3PO4
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DOI：
10.1021/cm021076s
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发表时间：
2003-04
影响因子：
8.6
通讯作者：
J. Qiao;N. Yoshimoto;M. Ishikawa;M. Morita
中科院分区：
文献类型：
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作者：
J. Qiao;N. Yoshimoto;M. Ishikawa;M. Morita
通过在聚乙二醇二甲醚（PEGDE）增塑的聚环氧乙烷改性聚甲基丙烯酸酯（PEO-PMA）中引入无水H3 PO 4，制备了非水质子导电凝胶电解质。光学透明的聚合物凝胶膜，得到了在很宽的范围内的组成比例。样品膜已通过AC电导率，FTIR和DSC测量进行了表征。对于（PEO-PMA）/PEGDE质量比为32：68的组合物，在室温下获得1.3 × 10- 4S cm-1的高电导率。通过添加少量的第二增塑剂二甲基甲酰胺（DMF）来增强离子电导率。凝胶膜的直流极化实验表明，凝胶中的电荷传输主要是离子型的（离子度> 0.99），其中主要的移动的物种被认为是迁移率μ = 2.5 × 10- 4cm ~ 2 V ~（-1）s ~（-1）的H ~+阳离子。红外光谱证明了氢键和质子相互作用的存在。
Nonaqueous proton-conducting gel electrolyte has been prepared by incorporating anhydrous H3PO4 in poly(ethylene oxide)-modified poly(methacrylate) (PEO−PMA) plasticized by poly(ethylene glycol) dimethyl ether (PEGDE). Optically transparent polymeric gel membranes were obtained in a wide range of the component ratio. The sample membranes have been characterized by AC conductivity, FTIR, and DSC measurements. High conductivity of 1.3 × 10-4 S cm-1 was obtained at room temperature for the composition of the (PEO−PMA)/PEGDE mass ratio 32:68. The ionic conductivity was enhanced by the addition of small amounts of the second plasticizer, dimethylformamide (DMF). The DC polarization experiments of the gel membranes with Pt blocking electrodes revealed that the charge transport in the gel was mainly ionic (tion > 0.99), where the type of the major mobile species was considered to be H+ cation with mobility μ = 2.5 × 10-4 cm2 V-1 s-1. The FTIR spectroscopy proved that hydrogen-bonding and protonic interactions ex...