A poly(3,4-propylenedioxythiophene)/carbon micro-sphere-bismuth nanoflake composite and multifunctional Co-doped graphene for a benchmark photo-supercapacitor

Das, Aparajita and Ojha, Manoranjan and Subramanyam, Palyam and Deepa, Melepurath (2020) A poly(3,4-propylenedioxythiophene)/carbon micro-sphere-bismuth nanoflake composite and multifunctional Co-doped graphene for a benchmark photo-supercapacitor. Nanoscale Advances, 2 (7). pp. 2925-2942. ISSN 2516-0230

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Abstract

Efficient storage of sunlight in the form of charge is accomplished by designing and implementing a photo-supercapacitor (PSC) with a novel, cost-effective architecture. Sulfur (S)- and nitrogen (N)-doped graphene particles (SNGPs) are incorporated in a TiO2/CdS photoanode. The beneficial effects of SNGPs such as the high electrical conductance promoting fast electron transfer to TiO2, a suitably positioned conduction band that maximizes charge separation, and its' ability to absorb red photons translate into a power conversion efficiency of 9.4%, for the champion cell. A new composite of poly(3,4-propylenedioxythiophene)/carbon micro-sphere-bismuth nanoflakes (PProDOT/CMS-BiNF) is integrated with the photoanode to yield the PSC. The photocurrent produced under 1 sun irradiance is directed to the supercapacitor, wherein, the synergy between the faradaic and electrical double layer charge accumulation mechanisms of PProDOT and CMS-BiNF bestows storage parameters of an areal capacitance of 104.6 mF cm-2, and energy and power densities of 9 μW h cm-2 and 0.026 mW cm-2. An overall photo-conversion and storage efficiency of 6.8% and an energy storage efficiency of 72% exhibited by the PSC are much superior to those delivered by a majority of the PSCs reported in the literature on the otherwise highly efficient perovskite solar cell or the expensive Ru dye based solar cells.

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IITH Creators:
IITH CreatorsORCiD
Das, AparajitaUNSPECIFIED
Ojha, ManoranjanUNSPECIFIED
Subramanyam, PalyamUNSPECIFIED
M, DeepaUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: Beneficial effects; Electrical conductance; Electrical double layer charge; Energy storage efficiencies; Fast electron transfer; Poly(3 ,4-propylenedioxythiophene) (PProDOT); Power conversion efficiencies; Storage efficiency Engineering
Subjects: Chemistry
Divisions: Department of Chemistry
Depositing User: . LibTrainee 2021
Date Deposited: 17 Jul 2021 04:54
Last Modified: 14 Mar 2022 07:13
URI: http://raiith.iith.ac.in/id/eprint/8382
Publisher URL: http://doi.org/10.1039/d0na00103a
OA policy: https://v2.sherpa.ac.uk/id/publication/37910
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