Do Counter Electrodes on Metal Substrates Work with Cobalt Complex Based Electrolyte in Dye Sensitized Solar Cells?

Kati Miettunen*, Tapio Saukkonen, Xiaoe Li, ChunHung Law, Yeo Kee Sheng, Janne Halme, Armi Tiihonen, Piers R. F. Barnes, Tarek Ghaddar, Imran Asghar, Peter Lund, Brian C. O'Regan

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

21 Citations (Scopus)

Abstract

Yes. Testing 7 different metals as a substrate for a counter electrode in dye sensitized solar cells (DSSC) showed that some metals can be a good option for use with cobalt electrolyte. It was found that Stainless steels 304 and 321 as well as Ni and Ti suit well to the counter electrodes in DSSCs with cobalt electrolyte. In these 4 cases both the efficiency and the lifetime were similar to the reference cells on conducting glass substrates. In contrast, the cells with Al, Cu and Zn substrates suffered from both a low efficiency and a poor stability. These three metals had clear marks of corrosion such as apparent corrosion products in the aged cells. Additionally, we also investigated how the different types of catalyst materials perform in the case of a metal counter electrode (stainless steel 304) with cobalt electrolyte in comparison to reference glass cells. Among the 5 different catalyst layers the best results for stainless steel electrode were achieved with low temperature platinization whereas polymer catalysts poly(3,4-ethylenedioxythiophene)-p-toluenesulfone and poly(3,4-ethylenedioxythiophene)-polystyrenesulfone that worked well on the glass worked very poorly on the metal. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.074302jes] All rights reserved.

Original languageEnglish
Pages (from-to)H132-H137
Number of pages6
JournalJournal of the Electrochemical Society
Volume160
Issue number2
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

Keywords

  • ORGANIC-DYES
  • RESISTANCE
  • EFFICIENCY
  • MEDIATORS

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