| 以PEO为基质的离子及质子导电聚合物电解质 |
| Proton-conducting and Ionic-conducting Polymer Electrolytes Based on Polyethylene Oxide(PEO) |
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| 摘要: 本文以PEO-LiClO4为基质,在其中加入适量的纳米氧化锌及氧化锡,制备PEO-LiClO4-ZnO及PEO-LiClO4-SnO2离子导电聚合物电解质膜,测定了复合电解质膜的电导率,并探讨了纳米粒子与PEO链的相互作用,提出复合电解质膜的电导率提高的主要影响因素。本文还合成以PEO为基质的PEO-12-钨硅酸质子导电聚合物电解质膜,讨论12-钨硅酸的加入对PEO的构型及Keggin离子的影响并分析PEO-12-钨硅 |
| 关键词: PEO 12-钨硅酸 纳米氧化锌 纳米二氧化锡 电解质 |
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| Abstract: Polymer-inorganic composite films of PEO-ZnO-LiClO4, PEO-SnO2-LiClO4 and PEO-12-TSA(12-TSA: 12-tungstosilicic acid;PEO:polyethylene oxide,Aldrich,MW=600000) have been prepared through a film-casting method. The interactions between PEO and ZnO nanoparticles and those between PEO and SnO2 nanopartilces decrease the crystallinity of the composite films so as to produce more amorphous regions for charge carriers to transfer, and to release more Li+ or ClO4- from Li+ ClO4- ion pairs as charge carriers. As a result, the ionic conductivity of the films is significantly enhanced. The Keggin anions and the polymer molecules are linked together by hydrogen bonds to form a new composite compound of PEO-12-TSA. The ether oxygens of the PEO are associated with H3O+ cations provided by 12-TSA. 12-TSA not only provides the protons but also favors the formation of the H3O+ species and increases the proton conductivity of the PEO-12-TSA films. |
| Keywords: PEO ZnO nanoparticles SnO2 nanoparticles 12-tungstosilicic acid electrolyte |
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| 赵旭,熊焕明,陈接胜.以PEO为基质的离子及质子导电聚合物电解质[J].无机化学学报,2002,18(1):63-66. |
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