MilliporeSigma
  • Home
  • Search Results
  • Fabrication of Mesoporous CoS2 Nanotube Arrays as the Counter Electrodes of Dye-Sensitized Solar Cells.

Fabrication of Mesoporous CoS2 Nanotube Arrays as the Counter Electrodes of Dye-Sensitized Solar Cells.

Chemistry, an Asian journal (2015-07-15)
Jung-Che Tsai, Min-Hsiung Hon, Ing-Chi Leu
ABSTRACT

Mesoporous cobalt sulfide nanotube arrays on FTO-coated glass were synthesized by combining three simple technologies: the selective etching of ZnO sacrificial templates, mesoporous Co3 O4 formation from cobalt-chelated chitosan, and ion-exchange reaction (IER). The mesoporous Co3 O4 nanotubes composed of the Co3 O4 nanoparticles possess a high surface area and are taken advantage for further removal of templates and IER. The morphologies and crystal structures of the CoS2 nanotube arrays were characterized by SEM, TEM, and XRD analyses. Their electrocatalytic properties were determined by electrochemical analyses including cyclic voltammetry measurements and Tafel polarization. The DSSCs assembled with a CoS2 counter electrode achieved a power conversion efficiency of 6.13 %, which was comparable to that of the DSSC with the Pt counter electrode (6.04 %). This indicates that the mesoporous CoS2 nanotube array can be a low-cost and efficient alternative for the reduction of electrolytes in DSSCs.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Guanidine thiocyanate, ≥97% (titration)
Sigma-Aldrich
Guanidine thiocyanate, for molecular biology, ≥99%
Sigma-Aldrich
Guanidine thiocyanate, BioUltra, for molecular biology, ≥99.0% (AT)
Sigma-Aldrich
Hexamethylenetetramine, ReagentPlus®, 99%
Sigma-Aldrich
Hexamethylenetetramine, ACS reagent, ≥99.0%
Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, anhydrous, ≥99.5%
Supelco
Acetonitrile, HPLC grade, ≥99.93%
Sigma-Aldrich
4-tert-Butylpyridine, 98%
Sigma-Aldrich
Iodine, ≥99.99% trace metals basis
Sigma-Aldrich
5α-Androstan-17β-ol-3-one, ≥97.5%
Sigma-Aldrich
Hexamethylenetetramine, meets analytical specification of Ph. Eur., BP, 99-100.5% (calc. to the dried substance)
Sigma-Aldrich
Hexamethylenetetramine, puriss. p.a., reag. Ph. Eur., ≥99.5% (calc. to the dried substance)
Sigma-Aldrich
Cobalt(II) acetate, 99.99% trace metals basis
Sigma-Aldrich
Acetonitrile, anhydrous, 99.8%
Sigma-Aldrich
Acetonitrile, ≥99.5%, ACS reagent
Sigma-Aldrich
Guanidine thiocyanate, BioReagent, for molecular biology, ≥99%
Sigma-Aldrich
Ethyl alcohol, Pure, 190 proof, ACS spectrophotometric grade, 95.0%
Sigma-Aldrich
Ethyl alcohol, Pure, 190 proof, meets USP testing specifications
Sigma-Aldrich
Iodine, anhydrous, beads, −10 mesh, 99.999% trace metals basis
Sigma-Aldrich
Acetonitrile, HPLC Plus, ≥99.9%, poly-coated bottles
Sigma-Aldrich
tert-Butanol, anhydrous, ≥99.5%
Sigma-Aldrich
Lithium perchlorate, 99.99% trace metals basis
Sigma-Aldrich
Iodine, 99.999% trace metals basis
Sigma-Aldrich
Acetonitrile, electronic grade, 99.999% trace metals basis
Sigma-Aldrich
Lithium perchlorate, battery grade, dry, 99.99% trace metals basis
Sigma-Aldrich
Acetonitrile
Sigma-Aldrich
Acetic acid, for luminescence, BioUltra, ≥99.5% (GC)
Sigma-Aldrich
Sodium sulfide
Sigma-Aldrich
Lithium iodide, AnhydroBeads, −10 mesh, 99.999% trace metals basis
Sigma-Aldrich
Acetic acid, ≥99.5%, FCC, FG