An approach to develop high performance supercapacitor using Bi 2 O 3 based binary and ternary nanocomposites
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An approach to develop high performance supercapacitor using Bi2O3 based binary and ternary nanocomposites Selvakumar Veeralakshmi1, Siva Kalaiselvam1, Ramadurai Murugan2, Prabhu Pandurangan2,*, Selvan Nehru2,* , Subramanian Sakthinathan3, and Te-Wei Chiu3 1
Department of Applied Science and Technology, A. C. Tech. Campus, Anna University, Chennai, Tamil Nadu 600025, India Department of Physical Chemistry, University of Madras, Guindy Campus, Chennai, Tamil Nadu 600025, India 3 Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei 106, Taiwan 2
Received: 6 August 2020
ABSTRACT
Accepted: 22 October 2020
Designing supercapacitor devices using different active materials is an effective approach for the emergent development of materials in the energy storage applications at the current scenario. Herein, a series of materials, Bi2O3, Ag/ Bi2O3, g-C3N4 and Ag/Bi2O3/g-C3N4 have been synthesized and characterized for the examination of supercapacitor applications. The supercapacitance performances of the nanomaterials were in the order of Bi2O3 \ g-C3N4 \ Ag/ Bi2O3/g-C3N4 \ Ag/Bi2O3 and higher supercapacitance was observed for Ag/ Bi2O3 nanocomposite (303 F g–1) may be due to the effective play of silver doping in Bi2O3. Hence it is important to optimize the rational designing of these kinds of binary/ternary nanocomposites for the further development in the supercapacitor applications.
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Springer Science+Business
Media, LLC, part of Springer Nature 2020
1 Introduction Over the past few decades with fast moving global economy and large depletion of fossil fuels, there is an increasing demand for the development of sustainable and renewable power resources, which has been stimulated intensive research for an efficient, clean energy storage devices and environmental revolution worldwide. Among the various energy storage devices, supercapacitors have been played more attention owing to their excellent features such as high power density [1–3], excellent stability [4],
ultra-fast charge and discharge rate [5–7], long cycle life [8, 9], low maintenance, and safe operation to make the next-generation energy storage devices for emergent applications in electronics, power back-ups and hybrid vehicles [10–14]. Recently, various pseudocapacitive compounds have been considered as active electrode materials such as NiO [15], MnO2 [16], ZnO [17], MgO [18], MoS2 [19], and Bi2O3 [20]. Among these materials, bismuth oxide has a wide band gap (2.6–2.9 eV), high electrochemical stability, high redox reversibility, refractive index, excellent ionic conductivity and high
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https://doi.org/10.1007/s10854-020-04743-3
J Mater Sci: Mater Electron
power capacity. However, the supercapacitive behavior of Bi2O3 has not been studied much, and only a few literatures have been reported. Gujar et al. reported electrodeposited Bi2O3 showed specific capacitance value of 98 F g-1 [21]. Jin et al. prepared Bi2O3–activ
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