Sr and Fe substituted LaCoO3 nano perovskites: Electrochemical energy storage and sensing applications

被引：7
|
作者：
Deshmukh, V. V. [1 ]
Tejashwini, D. M. [2 ]
Nagaswarupa, H. P. [2 ]
Naik, Ramachandra [3 ]
Al-Kahtani, Abdullah A. [4 ]
Kumar, Yedluri Anil [5 ]
机构：
[1] Shri Shivaji Sci Coll, Dept Phys, Amravati 444602, Maharashtra, India
[2] Davangere Univ, Dept Studies Chem, Davanagere 577007, India
[3] New Horizon Coll Engn, Dept Phys, Bangalore 560103, India
[4] King Saud Univ, Coll Sci, Dept Chem, POB 2455, Riyadh 11451, Saudi Arabia
[5] Saveetha Univ, Saveetha Inst Med & Tech Sci, Saveetha Sch Engn, Chennai 602105, Tamil Nadu, India
来源：
JOURNAL OF ENERGY STORAGE | 2024年 / 89卷
关键词：
LSCFO; Supercapacitors; Energy storage; Sensors; Nanocomposite; Lco : Lsco; ELECTRODE; NANOCOMPOSITE; OXIDATION; EFFICIENT; CAPACITY; GRAPHENE; CATALYST; DESIGN; RAMAN; FOAM;
D O I：
10.1016/j.est.2024.111724
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Perovskite-type LaCoO3 (LCO), La0.8Sr0.2CoO3 (LSCO), and La0.8Sr0.2Co0.9Fe0.1O3 (LSCFO) were prepared though a sol gel assisted hydrothermal method for supercapacitors and electrochemical sensors for heavy metal ions detection applications. Rhombohedral crystal structure was confirmed using experimental and DFT based computational XRD pattern. LCO, LSCO and LSCFO based modified carbon paste electrodes were prepared for cyclic voltammetry, electrochemical impedance spectra and galvanostatic charge discharge measurements. Among all electrodes, LSCFO results with 715.5 Fg(-1) specific capacitance with 97 % retention after 1500 cycles. Cyclic voltammetry measurements for the sensing and detection of heavy metal ions (chromium and mercury) were carried out using all three electrodes and observed that LSCFO showed better response comparatively to that of other two electrodes, thus can be claimed as a potential mixed metal oxide nanomaterial for the fabrication of electrodes for storage of energy and sensor applications.
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页数：13
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