染料敏化太阳能电池准固态电解质PAM-PEG研究.pdfVIP

染料敏化太阳能电池准固态电解质 PAM/PEG 的研究 摘 要 聚丙烯酰胺(PAM)是一种线型的水溶性聚合物，是水溶性高分子中应用最广 泛的品种之一，它具有增稠、絮凝和调节流体流变性的作用。PAM能够吸收大量 的水，但在液体电解质中它并不是一个很好的吸收剂，而PEG是种双亲性的物质， 可与PAM形成均相共混物，二者共混后可加强对液态电解质的吸收。本实验通过 在丙烯酰胺的聚合反应中加入PEG 的方法来制备PEG/PAM共混物。用PEG/PAM 共混物固化液态电解质得到一种新型的准固态电解质。研究了共混物中PEG含 量、PEG分子量、有机溶剂、温度等因素对准固态电解质的吸收度和电导率的影 响，结果表明PEG分子量为20000 ，含量为50%的共混物在EC ：PC组成的液态电 解质中吸收度和电导率较大，分别为2.04g/g和1715.6us/cm。 关键词：染料敏化太阳能电池，高分子凝胶电解质，聚丙烯酰胺，聚乙二醇 II 染料敏化太阳能电池准固态电解质 PAM/PEG 的研究 Abstract Polyacrylamide (PAM) ，a linear water-soluble polymer，is one of the most extensively applied water-soluble polymer. It plays a regulatory role of thickening， flocculation and modifying the rheological properties of the fluid. PAM can absorb a large amount of water，but it can not absorb liquid electrolyte well. It is well known that PEG is a kind of amphiphilic material ，it can form homogeneous hybrid with PAM. The hybrid will be an efficient absorbent for liquid electrolyte. In this study the PAM/PEG hybrid was prepared by adding PEG into the mixture of oligo (acrylamide). Then a new type of quasi-solid gel electrolyte was obtained by socking PAM/ PEG hybrid into the liquid electrolyte.The absorbency and the conductivity of the PAM/PEG hybrid were influenced when the PEG content ，PEG molecular weight ， organic solvent and temperature varied. It was found when the content of PEG was 40% ，and its molecular weight was 20000，the liquid electrolyte absorbency of the hybrid was 2.04g/g and ionic conductivity was 1715.6us/cm，in which the liquid electrolyte were composed of 0.5M KI，0.05 M I2 ，and 80 wt.% EC and 20 wt.% PC. Key words ：Dye-sensitized solar cell ，polymer gel electrolyte ，polyacrylamide ， polyethylene glycol