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Electrochemical properties of TiOX/rGO composite as an electrode for supercapacitors
Maharsi R.a, Arif A.F.b, Ogi T.c, Widiyandari H.a,d, Iskandar F.a
a National Center for Sustainable Transportation Technology (NCSTT), Intitut Teknologi Bandung, Bandung, 40132, Indonesia
b Department of New Investment, PT Rekayasa Industri, Jakarta, 12740, Indonesia
c Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, 739-8527, Japan
d Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Sebelas Maret, Kentingan, Surakarta, 57126, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2019 The Royal Society of Chemistry.Transition metal oxides are known as the active materials for capacitors. As a class of transition metal oxide, Magnéli phase TiOx is particularly attractive because of its excellent conductivity. This work investigated the electrochemical characteristics of TiOx and its composite with reduced graphene oxide (rGO). Two types of TiOx, i.e. low and high reduction extent, were employed in this research. Electrochemical impedance spectroscopy revealed that TiOx with lower reduction extent delivered higher electro-activity and charge transfer resistance at the same time. However, combining 10% of low-reduction state TiOx and rGO using a simple mixing process delivered a high specific capacitance (98.8 F g-1), which was higher than that of standalone rGO (49.5 F g-1). A further improvement in the specific capacitance (102.6 F g-1) was given by adding PEDOT:PSS conductive polymer. Results of this research gave a basic understanding in the electrochemical behavior of Magnéli phase TiOx for the utilization of this material as supercapacitor in the future.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Charge transfer resistance,Conductive Polymer,Electro-activity,Electrochemical behaviors,Electrochemical characteristics,High specific capacitances,Reduced graphene oxides (RGO),Specific capacitance[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]This work is supported by USAID through Sustainable Higher Education Research Alliances (SHERA) Program and partially funded by the Indonesian Ministry of Research, Technology and Higher Education under WCU Program managed by Institut Teknologi Bandung.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1039/c9ra04346b[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]