A successive ionic layer adsorption and reaction (SILAR) method to fabricate a layer-by-layer (LbL) MnO2-reduced graphene oxide assembly for supercapacitor application
IR@CMERI: CSIR- Central Mechanical Engineering Research Institute (CMERI), Durgapur
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| Title |
A successive ionic layer adsorption and reaction (SILAR) method to fabricate a layer-by-layer (LbL) MnO2-reduced graphene oxide assembly for supercapacitor application
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| Creator |
Jana, Milan
Saha, Sanjit Samanta, Pranab Murmu, Naresh Chandra Kim, Nam Hoon Kuila, Tapas Lee, Joong Hee |
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| Subject |
Supercapacitor
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| Description |
A facile, cost effective and additive-free successive ionic layer adsorption and reaction (SILAR) technique is demonstrated to develop layer-by-layer (LbL) assembly of reduced graphene oxide (RGO) and MnO2 (MnO2-RGOSILAR) on a stainless steel current collector, for designing light-weight and small size supercapacitor electrode. The transmission electron microscopy and field emission scanning electron microscopy images shows uniform distribution of RGO and MnO2 in the MnO2-RGOSILAR. The LbL (MnO2-RGOSILAR) demonstrates improved physical and electrochemical properties over the hydrothermally prepared MnO2-RGO (MnO2-RGOHydro). The electrochemical environment of MnO2-RGOSILAR is explained by constant phase element in the high frequency region, and a Warburg element in the low frequency region in the Z-View fitted Nyquist plot. The equivalent circuit of the MnO2-RGOHydro, displays the co-existence of EDL and constant phase element, indicating inhomogeneous distribution of MnO2 and RGO by the hydrothermal technique. An asymmetric supercapacitor device is designed with MnO2-RGOSILAR as positive electrode, and thermally reduced GO (TRGO) as negative electrode. The designed cell exhibits high energy density of ∼88 Wh kg−1, elevated power density of ∼23,200 W kg−1, and ∼79% retention in capacitance after 10,000 charge-discharge cycles.
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| Publisher |
Elsevier
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| Date |
2017-02
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| Type |
Article
PeerReviewed |
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| Identifier |
Jana, Milan and Saha, Sanjit and Samanta, Pranab and Murmu, Naresh Chandra and Kim, Nam Hoon and Kuila, Tapas and Lee, Joong Hee (2017) A successive ionic layer adsorption and reaction (SILAR) method to fabricate a layer-by-layer (LbL) MnO2-reduced graphene oxide assembly for supercapacitor application. Journal of Power Sources, 340. pp. 380-392.
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| Relation |
http://cmeri.csircentral.net/444/
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