Facile synthesis of Eu-doped CaTiO3 and their enhanced supercapacitive performance

被引:71
作者
Portia, S. Anjelin Ursula [1 ,2 ]
Srinivasan, Rajkumar [3 ]
Elaiyappillai, Elanthamilan [3 ]
Johnson, Princy Merlin [3 ]
Ramamoorthy, K. [2 ]
机构
[1] Bharathiar Univ, Ctr Res & Dev, Coimbatore 641046, Tamil Nadu, India
[2] Govt Arts & Sci Coll, Dept Phys, Namakkal 638183, Tamil Nadu, India
[3] Bishop Heber Coll, Dept Chem, Tiruchirappalli 620017, Tamil Nadu, India
关键词
Simple wet chemical method; Eu-doped CaTiO3; Cyclic voltammetry; Energy storage; Specific capacitance; SOLID-STATE; ASYMMETRIC SUPERCAPACITOR; THERMAL-DECOMPOSITION; LOW-TEMPERATURE; NI-FOAM; ELECTRODE; CARBON; PEROVSKITE; OXIDE; PHOTOLUMINESCENCE;
D O I
10.1007/s11581-020-03494-9
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The first description on the capacitive behavior of Eu-doped CaTiO3 analyzed by adopting cyclic voltammetry (CV), galvanostatic charge/discharge studies (GCD), and electrochemical impedance spectroscopy (EIS) technique is submitted. The present work focused on the synthesis of perovskite type of CaTiO3 and Eu-doped CaTiO3 via simple wet chemical method. The prepared samples were characterized using various spectral and analytical techniques, viz., XRD, FT-IR, SEM, EDX, UV-DRS, and HR-TEM. The electrodes constructed using CaTiO3 and Eu-doped CaTiO3 were tested by CV, GCD, and EIS with an aid of a three-electrode system, composed of the electroactive material as working electrode, Ag/AgCl as reference electrode, and platinum wire as counter electrode in 1 M aqueous KOH as electrolyte. The pronounced specific capacitance (C-sp) of 274 F g(-1) was observed at 1 A g(-1) current density. Furthermore, the synthesized materials showed capacitance retention of 93% even after 2000 charge/discharge cycles. Thus, CaTiO3 and Eu-doped CaTiO3 were found to be significant for energy storage applications. Graphical abstract
引用
收藏
页码:3543 / 3554
页数:12
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