ICCAS OpenIR
X-ray photoelectron spectroscopy analysis of the stability of platinized catalytic electrodes in dye-sensitized solar cells
Wang, GQ; Lin, Y; Xiao, XR; Li, XP; Wang, WB
2004-11-01
Source PublicationSURFACE AND INTERFACE ANALYSIS
ISSN0142-2421
Volume36Issue:11Pages:1437-1440
AbstractThe stability of platinized catalytic electrodes prepared by thermal decomposition of hexachloroplatinic acid was investigated. The platinum on the electrode did not dissolve in the presence of the electrolyte containing an iodide/triiodide redox couple, even under anodic bias. The electrocatalytic activity of platinized catalytic electrodes sealed in a cell with oxygen-free electrolyte did not decrease within 23 weeks. However, the charge transfer resistance value of platinized catalytic electrodes increased tenfold when the electrodes were heated at 150degrees for 15 min in air during the sealing process and doubled when the electrodes were reused. The XPS analysis results showed that part of the platinum catalyst on the surface of the electrode was transformed to Pt[II] and Pt[IV] during the thermal sealing process, which led to the decrease of catalytic activity of the platinized catalytic electrodes for the reduction of triiodide. A large amount of inactive iodine absorbed on the surface of the reused electrode, which was confirmed by XPS, also decreased the electrocatalytic activity of the electrodes. The electrocatalytic activity of reused electrodes can be recovered by heating again at 390degreesC or removing the platinum oxide and inactive iodine by the electrochemical method. Copyright (C) 2004 John Wiley Sons, Ltd.
KeywordDye-sensitized Solar Cells Platinized Catalytic Electrode Stability Xps
DOI10.1002/sia.1905
Indexed BySCI
Language英语
WOS IDWOS:000225242600001
PublisherJOHN WILEY & SONS LTD
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/82164
Collection中国科学院化学研究所
Corresponding AuthorLin, Y
Affiliation1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Key Lab Photochem, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Wang, GQ,Lin, Y,Xiao, XR,et al. X-ray photoelectron spectroscopy analysis of the stability of platinized catalytic electrodes in dye-sensitized solar cells[J]. SURFACE AND INTERFACE ANALYSIS,2004,36(11):1437-1440.
APA Wang, GQ,Lin, Y,Xiao, XR,Li, XP,&Wang, WB.(2004).X-ray photoelectron spectroscopy analysis of the stability of platinized catalytic electrodes in dye-sensitized solar cells.SURFACE AND INTERFACE ANALYSIS,36(11),1437-1440.
MLA Wang, GQ,et al."X-ray photoelectron spectroscopy analysis of the stability of platinized catalytic electrodes in dye-sensitized solar cells".SURFACE AND INTERFACE ANALYSIS 36.11(2004):1437-1440.
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