Rapid synthesis of cobalt manganese phosphate by microwave-assisted hydrothermal method and application as positrode material in supercapatteries

被引:4
作者
Cherusseri, Jayesh [1 ,2 ]
Thomas, Susmi Anna [3 ]
Pandey, A. K. [1 ,4 ]
Zaed, M. A. [1 ]
Farhana, N. K. [5 ]
Saidur, R. [1 ,6 ]
机构
[1] Sunway Univ, Res Ctr Nanomat & Energy Technol RCNMET, Sch Engn & Technol, 5 Jalan Univ, Bandar Sunway 47500, Selangor, Malaysia
[2] Sunway Univ, Sch Engn & Technol, 5 Jalan Univ, Bandar Sunway 47500, Selangor, Malaysia
[3] Affiliated Univ Kerala, Govt Coll Women, Dept Phys, Thiruvananthapuram 695014, Kerala, India
[4] Uttaranchal Univ, CoE Energy & Ecosustainabil Res, Dehra Dun, India
[5] Univ Malaya, Fac Sci, Dept Phys, Ctr Ion Univ Malaya, Kuala Lumpur 50603, Malaysia
[6] Univ Lancaster, Sch Engn, Lancaster LA1 4YW, England
来源
SCIENTIFIC REPORTS | 2024年 / 14卷 / 01期
关键词
Cobalt manganese phosphate; Supercapacitor; Supercapattery; Microwave; Hydrothermal; CHARGE STORAGE; PERFORMANCE; ION; ELECTRODES; FILM;
D O I
10.1038/s41598-024-77278-w
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Electrochemical energy storage devices with high specific capacity are of utmost important for the next-generation electronic devices. Supercapatteries (SCs) are highly demanded energy storage devices nowadays as these bridge the low energy supercapacitors and low power batteries. Herein, we report a rapid synthesis of cobalt manganese phosphate (COMAP) by microwave-assisted hydrothermal method and facile fabrication of SCs using electrodes comprising of COMAP as positrode material. The effect of precursor concentration on the microstructure and surface morphology of the COMAP samples are examined initially. Further, the electrochemical performance of COMAP electrodes is studied systematically in 3 M KOH (aqueous) electrolyte. COMAP exhibits excellent charge storage capabilities where type of charge storage mechanism is found to be battery-type based on the calculation obtained from Dunn's method. The SC electrode fabricated with COMAP synthesized using cobalt: manganese precursor ratio as 80:20 exhibits a highest specific capacity of 191.4 C/g at a scan rate of 1 mV/s. An asymmetric SC (ASC) cell fabricated with COMAP as positrode and activated carbon (AC) as negatrode exhibits a specific capacity of 165.5 C/g at a current density of 1.8 A/g. The COMAP//AC ASC cell exhibits an energy density of 34.1 Wh/kg at a corresponding power density of 1875 W/kg at a current density of 1.8 A/g.
引用
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页数:18
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