Probing the electrochemical properties of NiMn2O4 nanoparticles as prominent electrode materials for supercapacitor applications

被引：42
|
作者：
Dhas, Suprimkumar D. [1 ]
Maldar, Parvejha S. [1 ,5 ]
Patil, Meenal D. [1 ]
Waikar, Maqsood R. [2 ,6 ]
Sonkawade, Rajendra G. [2 ]
Chakarvarti, Shiv K. [3 ]
Shinde, Surendra K. [4 ]
Kim, Dae Y. [4 ]
Moholkar, Annasaheb, V [1 ]
机构：
[1] Shivaji Univ, Dept Phys, Thin Film Nanomat Lab, Kolhapur 416004, Maharashtra, India
[2] Shivaji Univ, Dept Phys, Radiat & Mat Res Lab, Kolhapur 416004, Maharashtra, India
[3] Faridabad & Ex Natl Inst Technol, Manav Rachna Int Inst Res & Studies MRIIRS, Kurukshetra 136119, Haryana, India
[4] Dongguk Univ, Coll Life Sci & Biotechnol, Dept Biol & Environm Sci, 32 Dongguk Ro,Biomed Campus, Goyang Si 10326, Gyeonggi, South Korea
[5] DY Patil Coll Engn, Kolhapur 4163007, Maharashtra, India
[6] Padmabhooshan Vasantraodada Patil Inst Technol PV, Budhgaon 416304, Maharashtra, India
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2021年 / 271卷
关键词：
Cubic spinel structure; Mixed transition metal oxides; NiMn2O4 (Nickel Manganese Oxide); Sol-gel method; Specific capacitance; Supercapacitors; REDUCED GRAPHENE OXIDE; FACILE SYNTHESIS; PERFORMANCE; MECHANISM; SPINELS; STORAGE; NIO;
D O I：
10.1016/j.mseb.2021.115298
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
NiMn2O4 (NMO) powders have been prepared by facile sol-gel route, and the effect of annealing temperature and the concentration of KOH electrolyte on its electrochemical performance has been investigated. The electrochemical performance of the NMO electrodes is tested via a three electrode arrangement in KOH electrolyte. The NMO electrode (NMO1) prepared from the powder synthesized at a temperature of 500 degrees C with an approximate crystallite size of 10 nm exhibits maximum specific capacitance of 571 Fg(-1) at a scan rate of 5 mVs(-1) in 1 M KOH electrolyte. The specific capacitance of the NMO1 electrode is found to be improved from 571 Fg(-1) in 1 M KOH to 762 Fg(-1) in 6 M KOH electrolyte. The improvement in the specific capacitance of the NMO1 working electrode in 6 M KOH electrolyte can be attributed to good electrochemical utilization and an effective charge storage mechanism.
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页数：11
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