Synthesis of various carbon incorporated flower-like MoS₂ microspheres as counter electrode for dye-sensitized solar cells

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• 作者：J. Theerthagiri ; R.A. Senthil…
• 关键词：Molybdenum disulfide ; Carbon ; Electrocatalytic activity ; Counter electrode ; Polymer electrolyte ; Dye ; sensitized solar cell
• 刊名：Journal of Solid State Electrochemistry
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：21
• 期：2
• 页码：581-590
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Physical Chemistry; Electrochemistry; Energy Storage; Characterization and Evaluation of Materials; Analytical Chemistry; Condensed Matter Physics;
• 出版者：Springer Berlin Heidelberg
• ISSN：1433-0768
• 卷排序：21

文摘

A flower-like molybdenum disulfide microspheres and various carbon materials (acetylene black, vulcan carbon, multi-walled carbon nanotubes, carbon nanofibers, and rice husk ash) incorporated MoS₂ microsphere materials were synthesized via convenient single-step hydrothermal method. The obtained MoS₂/C materials provide cost-effective and Pt free counter electrodes for DSSCs. Phthaloylchitosan-based polymer electrolyte was used as an electrolyte for DSSCs. The phase formation and purity of the synthesized materials were ascertained by powder X-ray diffractometer. The shape, morphology, and the distribution of the carbon materials in MoS₂ microspheres were examined by electron microscope measurements. The electrochemical measurements were revealed that the carbon materials incorporated MoS₂ electrode hold low charge transfer resistance at the counter electrode/electrolyte interface and demonstrate high electrocatalytic activity for the reduction of I₃− to I−ions. Among different carbon materials studied, MoS₂ doped on CNF offered a positive synergistic effect for the electrocatalytic reduction of I₃−. The DSSC fabricated with MoS₂/CNF CE and phthaloylchitosan-based polymer electrolyte shown a high power conversion efficiency of 3.17 %, whereas pure MoS₂ CE showed only 1.04 %. The present study validates the application of carbon incorporated MoS₂ as a potential CE in DSSCs.