3D hierarchical nanocrystalline cus cathode for lithium batteries

Gulnur Kalimuldina, Arailym Nurpeissova, Assyl Adylkhanova, Nurbolat Issatayev, Desmond Adair, Zhumabay Bakenov

Research output: Contribution to journalArticlepeer-review

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 languageEnglish
Article number1615
JournalMaterials
Volume14
Issue number7
DOIs
Publication statusPublished - Apr 1 2021

Keywords

  • Binder-free
  • Cathode
  • Copper sulfide
  • Cu foam
  • Lithium-ion battery

ASJC Scopus subject areas

  • Materials Science(all)

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