以氧化型和还原型多酸为非碘电对构筑染料敏化太阳能电池的电解质

项目名称： 以氧化型和还原型多酸为非碘电对构筑染料敏化太阳能电池的电解质

项目编号： No.21201031

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 无机化学

项目作者： 陈维林

作者单位： 东北师范大学

项目金额： 25万元

中文摘要： "推动能源生产和利用方式变革"是十二五规划中具有重大战略意义的课题之一。 太阳能的重要利用方式之一是研制成本较低、效率较高和无污染的染料敏化太阳能电池（DSSC）。其中，电解质的主要功能是复原染料和传输电荷，它是影响DSSC光电转化效率和长期稳定性的重要因素之一，目前广泛采用的碘电对有强腐蚀性，且不利于封装，与染料能级匹配不好，严重限制了DSSC开路电压的提高，因此开发与电池各组分能级匹配的新型高效非碘电解质是提高DSSC光电转换效率所亟待解决的问题。由于多酸结构多样，溶解性和稳定性好，氧化还原活性高，本身可被还原成杂多蓝，可与其氧化型多酸组成氧化还原电对构筑DSSC电解质。本课题首次以氧化型和还原型多酸为非碘电对构筑DSSC的电解质，克服碘电对缺点，提高DSSC的光电转化效率。多酸型非碘电对是一项具有重大意义的创新性课题，未见报道，将为解决能源危机和环境污染等重大问题提供新的途径。

中文关键词： 非碘电对；多金属氧酸盐；染料敏化太阳能电池；电解质；光电性能

英文摘要： "To promote the changes of the energy production and use patterns" is one of the projects with the strategic significance in the Twelfth Five-Year Plan. One of the important ways of using solar energy is to develop the lower cost, higher efficiency and pollution-free dye-sensitized solar cells (DSSC). In DSSC, the main function of the electrolyte is to restore the electrolyte and transfer the charges of dye molecules, the electrolyte is one of the important factor of affecting the photovoltaic conversion efficiency and long-term stability of the DSSC.The widely used iodine couple is strongly corrosive, not propitious to encapsulation, and not well matched with the energy level of the dye, severely limiting the increasing of the open circuit voltage of the DSSC, so it is an urgent problem to develop the efficient new non-iodine electrolyte which is well matched with the energy level of each component of the DSSC. Since polyoxometalates (POMs) possess the various structures, good solubility, stability and redox activity, they can be easily reduced to heteropoly blue, the reduced polyoxoanion and its oxidation type can be used as the redox couple to build the electrolyte of the DSSC. In this project, we firstly use the reduced and oxidized POMs as the iodine-free couple to build the electrolyte of the DSSC, to over

英文关键词： Iodine-free couples；polyoxometalates；dye-sensitized solar cells；electrolytes；photoelectric properties