| Facile Synthesis of Microsphere Copper Cobalt Carbonate Hydroxides Electrode for Asymmetric Supercapacitor | |
| Liu S.; Hui K.S.; Hui K.N.; Jadhav V.V.; Xia Q.X.; Yun J.M.; Cho Y.R.; Mane R.S.; Kim K.H. | |
| 2016 | |
| Source Publication | Electrochimica Acta
 |
| ISSN | 134686 |
| Volume | 188Pages:898 |
| Abstract | Porous microspheres copper cobalt carbonate hydroxides (CuxCo2-xCH) pseudocapacitive electrode material comprised of nanoplates via a facile hydrothermal method were presented. Significantly, the crystalline structure, morphology and electrochemical performance of the CuxCo2-xCH can be readily manipulated by varying the Cu/Co molar ratios. Among various stoichiometries of CuxCo2-xCH porous microspheres studied, Cu1.79Co0.21CH consisted of nanoplates with a mean thickness of ∼35 nm showed a high specific capacitance of 789 F g-1 at a current destiny of 1 A g-1 and good rate ability. Furthermore, the optimized Cu1.79Co0.21CH electrode also exhibited remarkable high cycling stability, ca 77.5% after 3000 charge/discharge cycles at current density of 5 A g-1. An asymmetric device was constructed from optimized Cu1.79Co0.21CH materials on nickel foam (NF) as cathode electrode and graphene on NF as anode electrode in a 6 M KOH electrolyte. The asymmetric Cu1.79Co0.21CH/NF//graphene/NF supercapacitor device delivered a specific capacitance of 60.5 F g-1 in a potential range of 0-1.6 V. A high energy density of 21.5 W h kg-1 was achieved at the power density of 200 W kg-1. More significantly, the designed device exhibited excellent cycling stability with 73.3% capacity retention after 5000 cycles. © 2015 Elsevier Ltd. All rights reserved. |
| Keyword | Asymmetric supercapacitor Copper cobalt carbonate hydroxide Hydrothermal method Microsphere Nanoplate |
| DOI | 10.1016/j.electacta.2015.12.018 |
| URL | View the original |
| Language | 英语 |
| The Source to Article | Scopus |
| Fulltext Access | |
| Citation statistics | |
| Document Type | Journal article |
| Collection | University of Macau |
| Recommended Citation GB/T 7714 | Liu S.,Hui K.S.,Hui K.N.,et al. Facile Synthesis of Microsphere Copper Cobalt Carbonate Hydroxides Electrode for Asymmetric Supercapacitor[J]. Electrochimica Acta,2016,188:898. |
| APA | Liu S..,Hui K.S..,Hui K.N..,Jadhav V.V..,Xia Q.X..,...&Kim K.H..(2016).Facile Synthesis of Microsphere Copper Cobalt Carbonate Hydroxides Electrode for Asymmetric Supercapacitor.Electrochimica Acta,188,898. |
| MLA | Liu S.,et al."Facile Synthesis of Microsphere Copper Cobalt Carbonate Hydroxides Electrode for Asymmetric Supercapacitor".Electrochimica Acta 188(2016):898. |
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