3D hierarchical nanocrystalline cus cathode for lithium batteries
Kalimuldina G. Nurpeissova A. Adylkhanova A. Issatayev N. Adair D. Bakenov Z.
1 April 2021MDPI AG
Materials
2021#14Issue 7
Conductive and flexible CuS films with unique hierarchical nanocrystalline branches directly grown on three-dimensional (3D) porous Cu foam were fabricated using an easy and facile solution processing method without a binder and conductive agent for the first time. The synthesis procedure is quick and does not require complex routes. The structure and morphology of the as-deposited CuS/Cu films were characterized by X-ray diffraction and scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy and transmission electron spectroscopy, respectively. Pure crystalline hexagonal structured CuS without impurities were obtained for the most saturated S solution. Electrochemical testing of CuS/Cu foam electrodes showed a reasonable capacity of 450 mAh g1 at 0.1 C and excellent cyclability, which might be attributed to the unique 3D structure of the current collector and hierarchical nanocrystalline branches that provide fast diffusion and a large surface area.
Binder-free , Cathode , Copper sulfide , Cu foam , Lithium-ion battery
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Department of Mechanical and Aerospace Engineering, Nazarbayev University, Kabanbay Batyr Ave. 53, Nur-Sultan, 010000, Kazakhstan
National Laboratory Astana, Nazarbayev University, Kabanbay Batyr Ave. 53, Nur-Sultan, 010000, Kazakhstan
Department of Chemical and Materials Engineering, Nazarbayev University, Kabanbay Batyr Ave. 53, Nur-Sultan, 010000, Kazakhstan
Department of Mechanical and Aerospace Engineering
National Laboratory Astana
Department of Chemical and Materials Engineering
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