Synergistic effect of MoO3/MoS2 in improving the electrocatalytic performance of counter electrode for enhanced efficiency in dye-sensitized solar cells. (July 2023)

• Record Type: Journal Article
• Authors: Vibavakumar, S.; Nisha, K.D.; Harish, S.; Archana, J.; Navaneethan, M.
• Is Part Of: Applied geography. Volume 161(2023)
• Publication Date: 2023-07
• Subjects: MoO3/MoS2 film -- Active sites -- Charge transfer -- Exchange current density -- Electrocatalytic activity -- DSSC device; Geography -- Periodicals; Human geography -- Periodicals; Human ecology -- Periodicals; 910
• DOI: 10.1016/j.mssp.2023.107431
• Languages: English
• ISSNs: 0143-6228

Abstract

Abstract: Engineering non-Pt-based counter electrode is an essential step toward the commercialization of DSSC. Here, we have employed MoO3 rods as a counter electrode and improved its catalytic performance towards the reduction of 3I − to I3 − by embedding MoS2 on it. This combination of nanostructures composed of MoO3 rods/MoS2 sheets possessed increased surface area for electrolyte interaction by roughly 3-fold and displayed an enhanced catalytic activity. MoS2 's presence lowered the charge transport resistance of MoO3 by eleven folds. Both the limiting and exchange current density were increased roughly 6 –fold. A maximum power conversion efficiency of 3.9% was achieved by M/MS2 CE, which is 2-fold higher than the efficiency obtained using MoO3 CE. This work ascertains MoO3 /MoS2 counter electrode as a potential candidate for a non-Pt-based CE and thereby helps reduce the cost of DSSCs to promote commercialization.