电聚合PANI作为低成本离子液体型DSSC对电极  

ELECTROPOLYMERIZED-PANI AS DSSC COUNTET ELECTRODE WITH LOW-COST WITH IONIC LIQUIDS ELECTROLYTE

作　　者：叶报喜[1] 李作鹏[2] 马祥元[2] 张世国[2] 胡晓东[1] 张庆华[2] 张晓萍[1] 邓友全[2] 

机构地区：[1]兰州大学信息科学与工程学院,兰州730000 [2]中科院兰州化学物理研究所绿色化学与催化研究中心,兰州730000

出　　处：《太阳能学报》2011年第6期826-830,共5页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(60377039;20533080);教育部"新世纪优秀人才支持计划"基金(NCET-04-0981)

摘　　要：用原位电聚合的方法在FTO导电玻璃上制备出了SO42-杂化的聚苯胺(PANI)(厚度10μm),并用循环伏安表征了其电聚合过程。通过扫描电镜表征,这种聚苯胺具有粗糙多孔的结构,有利于形成高比表面积的对电极。制备了以PMII和[EMIm]BF4、[EMIm]NTf2、[EMIm]N(CN)2不同组成比例的二元离子液体作为电解液的染料敏化太阳电池(DSSC)并研究其光伏行为,发现:使用[EMIm]N(CN)2和PMII(4∶6)电解液能得到最佳光电参数:短路电流密度Jsc(10.4mA.cm-2),开路电压Voc(0.655V),填充因子FF(0.521)和光电转换效率η(3.56%)。通过研究3种电解液的电导率I,3-和I-离子扩散系数,发现[EMIm]N(CN)2和PMII(4∶6)电解液具有最高的电导率和离子扩散系数。The in-situ electropolymerized-polyaniline（PANI） film （lOlxm thickness） on FTO （fluorine tin oxide） glass doped by SO4^2- was prepared, and its electropolymerizaion process was characterized by cyclic vohammetry. SEM of electropolymerized-PANI films doped by SO4^2- exhibit porous and crude film morphology, and the film structures may be favorable for the high surface area porous counter electrode. The electrolytes composed porous of two binary ionic liquids 1-propyl-3-methylimidazolium iodide （PMII） and [ EMIm] BF4, [ EMIm] N（CN） 2, [ EMIm] NTf2 in different ratio （volume/volume） were prepared. The results show that the electrolyte （ [ EMIm ] N （CN） 2 ： PMII was 4： 6） gave the best photovohaic parameters ： short-circuit photocurrent density Jse = 10.4mA·cm-2, open-circuit voltage Voc =0.655V, fill factor FF=0.521 and an overall energy conversion efficiency η= 3.56% when the electrolytes was applied to the dye-sensitized solar cell （DSSC） with a electropolymerized-PANI electrode. On the other hand, the conductivity and apparent diffusion of I3 and I - ions of electrolytes for DSSC were also measured. The electrolyte （ [ EMIm ] N （CN） 2： PMII was 4：6 ） possessed of the highest conductivity and apparent diffusion of I3- and I-.

关 键 词：染料敏化太阳电池 聚苯胺 对电极 离子液体 低粘度 

分 类 号：TB34[一般工业技术—材料科学与工程]