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Composite thin film of simultaneously formed carbon and SnO2 QDs for supercapacitance application

Abstract

Composite material with uniform size and structure is a critical asset that decides its properties like charge transfer, thermal, photoluminescence, mechanical, etc. and consequently the applications. Here for the first time, we report the concept of flame/combustion at liquid-liquid interface to synthesize in situ, thin film formation of composite consisting of two or more quantum dots. Synthesis of thin films of a composite containing C and SnO2 QDs having particle sizes below 3 nm was successfully done. As compared to a single quantum dots system, the formed composite showed significantly improved specific capacitance due to the synergistic effect arising from strong interaction between C and SnO2 QDs. This was confirmed by XPS, UV visible spectroscopy and photoluminescence spectra. Moreover, it was confirmed that even after 1000 charge/discharge cycles, the interaction between C and Sn remained unaltered; indicating significant stability of capacitance. Some of the advantages of this method include one step, eco-friendly process at ambient conditions. The generality of the method was established by synthesizing C-ZnO and C-TiO2 composite thin film. This new approach can be extended to form many other valuable composite thin films for various applications.

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Publication details

The article was received on 22 Jan 2018, accepted on 28 Mar 2018 and first published on 30 Mar 2018


Article type: Paper
DOI: 10.1039/C8NJ00375K
Citation: New J. Chem., 2018, Accepted Manuscript
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    Composite thin film of simultaneously formed carbon and SnO2 QDs for supercapacitance application

    A. P. Gaikwad, S. H. Patil, K. R. Patil, S. D. sathaye and C. V. Rode, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ00375K

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