Journal
CHEMICAL ENGINEERING JOURNAL
Volume 396, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2020.125374
Keywords
1T-MoS2; Quantum dot sensitized solar cell; Counter electrode; Electrocatalytic activity
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Funding
- Top-notch Academic Programs Project of Jiangsu Higher Education Institutions
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- National Natural Science Foundation of China [51578288]
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Honeycomb spherical metallic 1T-MoS2 was fabricated as an efficient counter electrode (CE) for quantum dot sensitized solar cells (QDSSCs) via facile hydrothermal method using environment-friendly F127 as soft templates. Electrochemical tests show that the interface charge transfer resistance (R-ct) of 1T-MoS2 is only 0.66 Omega with 3% template, demonstrating its superior electrocatalytic activity for S-n(2-) reduction. The power conversion efficiency of QDSSCs assembled with Ti-mesh substrate MoS2 CEs reached 6.03%. The outstanding performance is mainly ascribed to the unique morphological advantage and intrinsically excellent conductivity, catalytic activity and hydrophilicity of 1T-MoS2. The honeycomb spherical 1T-MoS2 increases the specific surface area and provides rich catalytic active sites and electrolyte transport channels, also enhances the stability of 1T-MoS2. The experimental results reveal 1T-MoS2 is expected to be a competitive CE material for efficient QDSSCs.
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