Carbon Doped MnCo2S4 Microcubes Grown on Ni foam as High Energy Density Faradaic Electrode
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
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| Title |
Carbon Doped MnCo2S4 Microcubes Grown on Ni foam as High Energy Density Faradaic Electrode
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| Creator |
Pramanik, Atin
Maiti, Sandipan Sreemany, Monjoy Mahanty, Sourindra |
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| Subject |
Electronics
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| Description |
Ternary metal sulfides are emerging as a new class of electrochemical energy storage materials outperforming their oxide counterparts. We report here a facile and scalable solvothermal synthetic approach for growth of carbon doped MnCo2S4 microcubes (edge length, 10 mu m) directly on Ni foam. The simple approach of binder-free design, in-situ carbon doping and the use of 3D current collector resulted in an extraordinarily high specific capacity of 1892C g(-1) (525.7 mAh g(-1)) at 5 A g(-1) and outstanding rate performance of 516C g(-1) (143.3 mAh g (1)) at a very high current density of 100 A g(-1) when tested as a faradaic electrode in aqueous KOH electrolyte. X-ray photoelectron spectroscopy (XPS) results indicate concurrent intercalation of both H+ and OH ions from the electrolyte during the electrochemical processes. In two-electrode symmetric MnCo2S4//KOH//MnCo2S4 cells, mimicking the physical configuration of practical cells, specific capacity of 215Cg(-1) (59.7 mAh g(-1)) could be achieved at 1 Ag-1. Further, the symmetric cell delivers energy densities of 106.5 and 15.2 Wh kg(-1) at power densities of 0.85 and 18 kW kg(-1) demonstrating great application prospects. (C) 2016 Elsevier Ltd. All rights reserved.
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| Publisher |
Pergamon-Elsevier
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| Date |
2016-09
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cgcri.csircentral.net/3742/1/atin.pdf
Pramanik, Atin and Maiti, Sandipan and Sreemany, Monjoy and Mahanty, Sourindra (2016) Carbon Doped MnCo2S4 Microcubes Grown on Ni foam as High Energy Density Faradaic Electrode. Electrochimita Acta, 213. pp. 672-679. ISSN 0013-4686 |
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| Relation |
http://cgcri.csircentral.net/3742/
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