Abstract
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.
| Original language | English |
|---|---|
| Article number | 1615 |
| Journal | Materials |
| Volume | 14 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Apr 1 2021 |
Funding
Funding: This research was funded by Ministry of Education and Science of Republic of Kazakhstan, AP08052143 “Development of wearable self-charging power unit” and by Nazarbayev University 091019CRP2114 “Three-Dimensional All Solid State Rechargeable Batteries”, and 240919FD3914 “Self-Charging Rechargeable Lithium-ion Battery”.
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 3 Good Health and Well-being
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SDG 7 Affordable and Clean Energy
Keywords
- Binder-free
- Cathode
- Copper sulfide
- Cu foam
- Lithium-ion battery
ASJC Scopus subject areas
- General Materials Science
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