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Optimization of manganese dioxide-multiwall carbon nanotube composite electrodes for supercapacitor applications

Authors :
Rahul Singhal
Thomas Sadowski
Manika Chaudhary
Rian V. Tucci
Jules Scanley
Rudra Patel
Prince Kumar Patel
Seth Gagnon
Arkid Koni
Kushagr Singhal
Peter K. LeMaire
Rakesh Kumar Sharma
Beer Pal Singh
Christine C. Broadbridge
Source :
Materials Science for Energy Technologies, Vol 7, Iss , Pp 228-236 (2024)
Publication Year :
2024
Publisher :
KeAi Communications Co., Ltd., 2024.

Abstract

Manganese dioxide-multiwall carbon nanotube (MnO2-MWCNT) nanocomposites were synthesized via one-pot synthesis method with varying concentrations of 1 mg/ml, 4 mg/ml, and 10 mg/ml MWCNT. The synthesized nanocomposites were characterized using x-ray diffraction (XRD), transmission electron microscopy (TEM), and electrochemical measurements. The intent of studying different concentrations is, ultimately, to correlate the effect of the concentration of multiwall carbon nanotube on the electrochemical performance of the MnO2-MWCNT nanocomposites. Two primary phenomena were observed as CNT concentration increased. First, less crystalline MnO2 adsorption onto individual CNTs occurred. Subsequently, CNT agglomeration became the primary feature of the nanostructures of high CNT concentration. The electrochemical studies reveal that the specific capacitance of MnO2 increases from 124 F/g to 145 F/g by the addition of 1 mg/ml MWCNTs and decreases to 102 F/g for MnO2-10 mg/ml MWCNT nanocomposite.

Details

Language :
English
ISSN :
25892991
Volume :
7
Issue :
228-236
Database :
Directory of Open Access Journals
Journal :
Materials Science for Energy Technologies
Publication Type :
Academic Journal
Accession number :
edsdoj.ba1da33609e54fa0bb1618fb29e98e94
Document Type :
article
Full Text :
https://doi.org/10.1016/j.mset.2023.12.001