Kazazi, Mahdi, Mirzaie, Mohsen, Rahimi Junaqani, Javad. (1403). Pseudocapacitive performance of cobaltite and nickel cobaltite electrodes fabricated by layer-by-layer chemical deposition method. هنرهای کاربردی, 4(2), 145-151. doi: 10.22075/ppam.2024.34952.1111
Mahdi Kazazi; Mohsen Mirzaie; Javad Rahimi Junaqani. "Pseudocapacitive performance of cobaltite and nickel cobaltite electrodes fabricated by layer-by-layer chemical deposition method". هنرهای کاربردی, 4, 2, 1403, 145-151. doi: 10.22075/ppam.2024.34952.1111
Kazazi, Mahdi, Mirzaie, Mohsen, Rahimi Junaqani, Javad. (1403). 'Pseudocapacitive performance of cobaltite and nickel cobaltite electrodes fabricated by layer-by-layer chemical deposition method', هنرهای کاربردی, 4(2), pp. 145-151. doi: 10.22075/ppam.2024.34952.1111
Kazazi, Mahdi, Mirzaie, Mohsen, Rahimi Junaqani, Javad. Pseudocapacitive performance of cobaltite and nickel cobaltite electrodes fabricated by layer-by-layer chemical deposition method. هنرهای کاربردی, 1403; 4(2): 145-151. doi: 10.22075/ppam.2024.34952.1111

Pseudocapacitive performance of cobaltite and nickel cobaltite electrodes fabricated by layer-by-layer chemical deposition method

Progress in Physics of Applied Materials
دوره 4، شماره 2 - شماره پیاپی 7، مهر 2024، صفحه 145-151    اصل مقاله (1.19 M)
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.22075/ppam.2024.34952.1111
نویسندگان
Mahdi Kazazi* ؛ Mohsen Mirzaie؛ Javad Rahimi Junaqani
Department of Materials Engineering, Faculty of Engineering, Malayer University, Malayer, Iran
چکیده
The development of efficient strategies for fabricating binder-free electrodes to electrochemical energy storage applications is of interest. Here, a novel approach of layer-by-layer chemical deposition was proposed for the preparation of binderless cobaltite (Co3O4) and nickel cobaltite (NiCo2O4) pseudocapacitive electrodes. The structure and morphology of the electrodes were obtained by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) examinations. The results demonstrated that the active materials were uniformly deposited on the surface of the nickel current collector. Also, a more porous structure was obtained in the case of nickel cobaltite electrode, which could improve the diffusion of ions to the active materials. Pseudocapacitive performance of the electrodes was obtained by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS) measurements. The results demonstrated that the nickel cobaltite electrode exhibited superior charge storage performance including a high specific capacitance of 1251 F g-1 at 1 A g-1 and good rate capability (89.7% capacitance retention with a 10-fold increase in the current rate), which were higher than those for the cobaltite electrode.
کلیدواژه‌ها
Nickel cobaltite؛ Chemical deposition؛ Binder-free electrode؛ Supercapacitors
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