Back to Search
Start Over
In suit growth of CuSe nanoparticles on MXene (Ti3C2) nanosheets as an efficient counter electrode for quantum dot-sensitized solar cells.
- Source :
-
Electrochimica Acta . Sep2019, Vol. 316, p248-256. 9p. - Publication Year :
- 2019
-
Abstract
- This paper reports a one-step hydrothermal method of in-situ growing copper selenide (CuSe) nanoparticles on the 2D materials-MXene (Ti 3 C 2) nanosheets to form CuSe/Ti 3 C 2 composite with three-dimensional structure. The CuSe/Ti 3 C 2 slurry prepared via a solvothermal method was screen-printied onto graphite sheet to form a counter electrode (CE) in quantum dot-sensitized solar cells (QDSCs). The CuSe/Ti 3 C 2 CE shows the better electrical conductivity for electron transfer, and a larger specific surface area to provide more active sites for polysulfide electrolyte reduction, as compared to the pristine CuSe CE and Ti 3 C 2 CE. Hence, the device with CuSe/Ti 3 C 2 -30 mg CE achieves an efficiencies of 5.12%, which much better than that of CuSe CE (3.47%) and Ti 3 C 2 CE (2.04%). The symmetrical dummy cells consisting of two CEs are further designed to confirm the best electrocatalytic activity and the excellent stability of composite CE towards polysulfide electrolyte. Therefore, CuSe/Ti 3 C 2 is very promising as CE for QDSCs and this strategy provides a facile route for the design of the composite with MXene as a CE for QDSCs. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00134686
- Volume :
- 316
- Database :
- Academic Search Index
- Journal :
- Electrochimica Acta
- Publication Type :
- Academic Journal
- Accession number :
- 136935182
- Full Text :
- https://doi.org/10.1016/j.electacta.2019.05.132