Application of a composite polymer electrolyte based on montmorillonite in dye-sensitized solar cells

Journal of the Brazilian Chemical Society

Freitas, Jilian Nei de¹  Universidade Estadual de Campinas, Campinas, Brazil¹  Paoli, Marco-Aurelio De¹  Ito, Bruno Ieiri¹  Nogueira, Ana Flávia¹ 

关键词: MMT clay;    composite polymer electrolyte;    ionic conductivity;    dye sensitized solar cells;   

DOI  :  10.1590/S0103-50532008000400012

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

In this work we report for the first time the preparation and characterization of a novel composite polymer electrolyte based on montmorillonite clay and a poly(ethylene oxide) derivative plasticized with g-butyrolactone and its application in dye sensitized solar cells. Although the plasticizers enhance the ionic conductivity of the polymer electrolytes, they compromise the mechanical stability of the whole system and make the practical application of these devices difficult. Films with composite polymer electrolytes containing different clay content were analyzed by thermal and mechanical analysis and electrochemical impedance spectroscopy. We observed that the addition of the inorganic particles to the polymer matrix promotes not only an enhancement in the mechanical properties but also contributes to the increase the of ionic conductivity of the system. A solid-state dye-sensitized solar cell was assembled for this first time with the electrolyte containing montmorillonite clay, displaying efficiencies higher than 3% at 10 mW cm-2.

【 授权许可】

Unknown