Polypyrrole-cobalt-carbon nanocomposites as efficient counter electrode materials for dye-sensitized solar cells  

作　　者：WANG LiJiang ZHANG Kai CHENG FangYi CHEN Jun 

机构地区：[1]Key Laboratory of Advanced Energy Materials Chemistry,Ministry of Education [2]College of Chemistry, Nankai University [3]Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)

出　　处：《Science China Chemistry》2014年第11期1559-1563,共5页中国科学（化学英文版）

基　　金：supported by the National Basic Research Program of China(2011CBA00702);the National Natural Science Foundation of China(21322101);Ministry of Education(B12015,113016A,ACET-13-0296);the Fundamental Research Funds for the Central Universities

摘　　要：In this work, we demonstrate a new kind of Pt-free counter electrode for dye-sensitized solar cells(DSCs). Polypyrrole-cobalt-carbon(PPY-Co-C) nanocomposites, with the advantages of low cost and simple preparation, show favorable catalytic activity in promoting tri-iodide reduction. The DSC composed of the PPY-Co-C nanocomposite electrode exhibits an acceptable energy conversion efficiency of 6.01%, a considerable short-circuit photocurrent of 15.33 mA cm-2, and a low charge-transfer resistance of 1.5 Ω cm2. The overall performance of PPY-Co-C is superior to the carbon counterparts and comparable with the platinum reference, rendering them efficient and promising counter electrode materials for DSCs.In this work, we demonstrate a new kind of Pt-free counter electrode for dye-sensitized solar cells（DSCs）. Polypyrrole-cobalt-carbon（PPY-Co-C） nanocomposites, with the advantages of low cost and simple preparation, show favorable catalytic activity in promoting tri-iodide reduction. The DSC composed of the PPY-Co-C nanocomposite electrode exhibits an acceptable energy conversion efficiency of 6.01%, a considerable short-circuit photocurrent of 15.33 mA cm-2, and a low charge-transfer resistance of 1.5 Ω cm2. The overall performance of PPY-Co-C is superior to the carbon counterparts and comparable with the platinum reference, rendering them efficient and promising counter electrode materials for DSCs.

关 键 词：dye-sensitized solar cell energy conversion polypyrrole-cobalt-carbon composite NANOMATERIAL Pt-free counter electrode 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TB332[一般工业技术—材料科学与工程]