Cover Page February-2016-Advanced Materials Letters

Advanced Materials Letters

Volume 7, Issue 2, Pages 98-103, February 2016
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Application Of Liquid Phase Plasma Process To The Synthesize Ruthenium Oxide/activated Carbon composite As Dielectric Material For Supercapacitor

Heon Lee1, Sun-Jae Kim2, Kay-Hyeok An3, Jung-Sik Kim4, Byung-Hoon Kim5, Sang-Chul Jung1*

1Department of Environmental Engineering, Sunchon National University, 255 Jungang-ro,  Suncheon, Jeonnam 540950, Republic of Korea

2Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University,  Seoul 143747, Republic of Korea

3Korea Institute of Carbon Convergence Tech., Jeonju 561844, Republic of Korea

4Department of Materials Science and Engineering, University of Seoul, 163 Seoulsiripdaero,  Dongdaemun-gu, Seoul 130743, Republic of Korea

5Department of Dental Materials, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 501759, Republic of Korea

Adv. Mater. Lett., 2016, 7 (2), pp 98-103

DOI: 10.5185/amlett.2016.6110

Publication Date (Web): Jan 04, 2016

E-mail: jsc@sunchon.ac.kr

Abstract

The ruthenium oxide/activated carbon composite (RCC) were synthesized using an innovative plasma-in-liquid process, which is known as liquid phase plasma (LPP) process. This technique uses a single-step process for the synthesis of metal nanoparticles on supporting materials. LPP process led to simultaneous precipitation of ruthenium and ruthenium oxide nanoparticles on the surface of activated carbon, which is then oxidized to ruthenium oxide during the thermal oxidation process. The specific capacitances of RCC electrodes prepared through the LPP and oxidation process were higher than that of bare AC. The specific capacitance increased with increasing LPP process duration and oxidation treatment. The specific capacitance of ruthenium oxide/carbon composite increased with increasing LPP process duration. The ruthenium oxide/carbon composite prepared through the LPP process and thermal oxidation showed smaller resistances and larger initial resistance slopes than bare activated carbon powder and this effect was intensified by increasing the LPP process duration. The RCC electrodes showed smaller resistances and larger initial resistance slopes than bare AC and this effect was intensified by increasing the LPP process duration and oxidation treatment.

Keywords

Supercapacitor, RuO2, activated carbon, specific capacitance, liquid phase plasma.

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