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One-step in situ growing CoS1.097 nanoplates on flexible graphite paper as efficient and stable FTO-free counter electrodes for dye-sensitized solar cells.
- Source :
-
Journal of Nanoparticle Research . Jun2019, Vol. 21 Issue 6, pN.PAG-N.PAG. 1p. - Publication Year :
- 2019
-
Abstract
- Hexagonal single crystal CoS1.097 nanoplates with the size of 200~500 nm have successfully in situ grown on flexible graphite paper (GP) and FTO substrates with a one-step hydrothermal method, which are used as counter electrodes (CEs) of dye-sensitized solar cells (DSSCs) and show different microstructures and different electrocatalytic activities for I3− reduction. The DSSC based on CoS1.097/GP CE shows larger fill factor and higher short-circuit current density than the DSSCs with Pt/FTO CE and CoS1.097/FTO CE, which attribute to the excellent electrical conductivity of GP and predominant electrocatalytic activity of hexagonal single crystal CoS1.097 nanoplates with the addition of a small electrocatalytic contribution of GP. Therefore, the DSSC with the CoS1.097/GP CE shows the highest photoelectric conversion efficiency (6.99%) among these DSSCs. Furthermore, the CoS1.097/GP CE still shows excellent electrochemical and mechanical stability in the iodine-based electrolyte after enduring the S-type mechanical perturbation. This work indicates the flexible CoS1.097/GP electrode is a promising candidate to replace Pt/FTO CE as a Pt-free, FTO-free, low cost, exceptionally stable, and high-efficient CE of DSSC. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13880764
- Volume :
- 21
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Journal of Nanoparticle Research
- Publication Type :
- Academic Journal
- Accession number :
- 137183985
- Full Text :
- https://doi.org/10.1007/s11051-019-4553-y