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一种新型无 Pt 和 FTO 的分级对电极用于染料敏化太阳能电池。

A novel hierarchical Pt- and FTO-free counter electrode for dye-sensitized solar cell.

机构信息

State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Renewable Energy, North China Electric Power University, Beijing 102206, China ; School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China.

State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Renewable Energy, North China Electric Power University, Beijing 102206, China ; Suzhou Institute, North China Electric Power University, Suzhou 215123, China.

出版信息

Nanoscale Res Lett. 2014 May 1;9(1):202. doi: 10.1186/1556-276X-9-202. eCollection 2014.

DOI:10.1186/1556-276X-9-202
PMID:24808802
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4009037/
Abstract

A novel hierarchical Pt- and FTO-free counter electrode (CE) for the dye-sensitized solar cell (DSSC) was prepared by spin coating the mixture of TiO2 nanoparticles and poly(3,4-ethylenedioxy-thiophene):poly(styrenesulfonate) (PEDOT:PSS) solution onto the glass substrate. Compared with traditional Pt/FTO CE, the cost of the new CE is dramatically reduced by the application of bilayer TiO2-PEDOT:PSS/PEDOT:PSS film and the glass substrate. The sheet resistance of this composite film is 35 Ω sq(-1) and is low enough to be used as an electrode. The surface morphologies of TiO2-PEDOT:PSS layer and modified PEDOT:PSS layer were characterized by scanning electron microscope, which shows that the former had larger surface areas than the latter. Electrochemical impedance spectra and Tafel polarization curves prove that the catalytic activity of TiO2-PEDOT:PSS/PEDOT:PSS/glass CE is higher than that of PEDOT:PSS/FTO CE and is similar to Pt/FTO CE's. This new fabricated device with TiO2-PEDOT:PSS/PEDOT:PSS/glass CE achieves a high power conversion efficiency (PCE) of 4.67%, reaching 91.39% of DSSC with Pt/FTO CE (5.11%).

摘要

一种新型的无铂和 FTO 的染料敏化太阳能电池（DSSC）对电极（CE）通过将 TiO2 纳米粒子和聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）溶液的混合物旋涂到玻璃基底上而制备。与传统的 Pt/FTO CE 相比，通过使用双层 TiO2-PEDOT：PSS/PEDOT：PSS 和玻璃基底，新 CE 的成本大大降低。该复合膜的方阻值为 35 Ω/sq(-1)，低到足以用作电极。TiO2-PEDOT：PSS 层和修饰的 PEDOT：PSS 层的表面形貌通过扫描电子显微镜进行了表征，结果表明前者的表面积大于后者。电化学阻抗谱和 Tafel 极化曲线证明，TiO2-PEDOT：PSS/PEDOT：PSS/玻璃 CE 的催化活性高于 PEDOT：PSS/FTO CE，与 Pt/FTO CE 的相似。具有 TiO2-PEDOT：PSS/PEDOT：PSS/玻璃 CE 的新型制备器件实现了 4.67%的高功率转换效率（PCE），达到了具有 Pt/FTO CE（5.11%）的 DSSC 的 91.39%。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e79/4009037/44fb6c2b0a11/1556-276X-9-202-3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e79/4009037/db24b0845876/1556-276X-9-202-1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e79/4009037/f1380904cd32/1556-276X-9-202-2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e79/4009037/44fb6c2b0a11/1556-276X-9-202-3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e79/4009037/db24b0845876/1556-276X-9-202-1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e79/4009037/f1380904cd32/1556-276X-9-202-2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1e79/4009037/44fb6c2b0a11/1556-276X-9-202-3.jpg

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