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Fabrication of biowaste derived carbon-carbon based electrodes for high-performance supercapacitor applications

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Title Statement Fabrication of biowaste derived carbon-carbon based electrodes for high-performance supercapacitor applications
 
Added Entry - Uncontrolled Name Mitravinda, Tadepalli ; Centre for Nanomaterials, International Advanced Research Centre for Powder Metallurgy and New Materials, Hyderabad, Telangana 500 005, India
Karthik, Mani ; Centre for Nanomaterials, International Advanced Research Centre for Powder Metallurgy and New Materials, Hyderabad, Telangana 500 005, India
Anandan, Srinivasan ; Centre for Nanomaterials, International Advanced Research Centre for Powder Metallurgy and New Materials, Hyderabad, Telangana 500 005, India
Sharma, Chandra Shekar; Department of Chemical Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy Mandal, Hyderabad, Telangana 502 285, India
Rao, Tata Narasinga; Centre for Nanomaterials, International Advanced Research Centre for Powder Metallurgy and New Materials, Hyderabad, Telangana 500 005, India
 
Uncontrolled Index Term Chemical activation, Supercapacitor, Even and uneven weight configuration, Weight balancing, Honeycomb
 
Summary, etc. The porous carbon is synthesised by chemical activation using cork dust bio-waste as carbon source and the electrochemical performance of the resulting carbon material is tested in even and uneven weight configuration using a two-electrode system. The obtained cork dust derived activated carbon (CDAC) shown a unique honeycomb structured morphology as confirmed by morphological analysis. X-ray diffraction (XRD) and Raman characterisation revealed the graphitic nature of the CDAC. Furthermore, the porous CDAC exhibited high specific surface area (1707 m2/g) and large pore volume (2.4 cc/g) with an average pore size of 4 nm. Even weight supercapacitor cell (SC) (positive and negative electrode with the same weight) and uneven weight SC cell (weight ratio of positive/negative electrodes:1.2) are assembled and tested in 1M TEABF4/AN. Uneven weight SC cell delivers the highest specific capacitance value of 107 F/g at a current density of 1 A/g. The uneven weight device shows promising cyclic stability without significant changes in capacitance values after 10000 and 5000 charge-discharge cycles at the potential window of 3 V and 3.2 V, respectively. On the contrary, a less specific capacitance (87 F/g at a current density of 1 A/g) observed for the even weight SC cell though high-capacity retention is realised under the same experimental conditions. The enhanced supercapacitor performance of uneven weight configuration SC cell is attributed to the weight balancing of the electrode, high graphitic nature, and unique pore size distribution with interconnected morphology of CDAC.
 
Publication, Distribution, Etc. Indian Journal of Engineering and Materials Sciences (IJEMS)
2021-03-24 10:24:59
 
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http://op.niscair.res.in/index.php/IJEMS/article/view/47546
 
Data Source Entry Indian Journal of Engineering and Materials Sciences (IJEMS); ##issue.vol## 27, ##issue.no## 6 (2020): IJEMS- DECEMBER 2020
 
Language Note en
 
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