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Electrochemical Properties of Porous Co(OH)2 Nano-flake Thin Film Prepared by Electro-deposition for Supercapacitor
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  • Journal title : Korean Chemical Engineering Research
  • Volume 54, Issue 2,  2016, pp.157-162
  • Publisher : The Korean Institute of Chemical Engineers
  • DOI : 10.9713/kcer.2016.54.2.157
 Title & Authors
Electrochemical Properties of Porous Co(OH)2 Nano-flake Thin Film Prepared by Electro-deposition for Supercapacitor
Lee, Hyeon Jeong; Jin, En Mei; Jeong, Sang Mun;
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Porous nano-flake thin films were prepared by a potential-controlled electro-deposition technique at various deposition voltage (-0.75, -1.0, -1.2, and -1.4 V) on Ti-mesh substrates for supercapacitor application. The potential of electrode was controlled to regulate the film thickness and the amount of nano-flake on the titanium substrate. The film thickness was shown to reach the maximum value of at -1.4 V of electrode potential, where 17.2 g of was deposited on the substrate. The specific discharge capacitances were measured to be 226, 370, 720, and in the 1st cycle corresponding to the films which were formed at -0.75, -1.0, -1.2, and -1.4 V of electrode potentials, respectively. Then the discharge capacities were decreased to be 206, 349, 586 and , where the persistency rates were 91, 94, 81, and 86%, respectively.
Supercapacitor;Deposition;;Pseudocapacitor;Specific capacitance;
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