1. Ultrathin carbon-coated FeS2 nanooctahedra for sodium storage with long cycling stability
- Author
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Heng Wang, Yong-Mook Kang, Shide Wu, Yong Zhang, Fangyi Cheng, Kai Zhang, Wang Shiwen, Lizhen Wang, Han Lifeng, and Jing Yaping
- Subjects
Materials science ,High conductivity ,Diffusion ,Sodium ,technology, industry, and agriculture ,chemistry.chemical_element ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Inorganic Chemistry ,Chemical engineering ,chemistry ,Electrode ,Carbon coating ,0210 nano-technology ,Porosity ,Cycling - Abstract
Uniform and porous ultrathin-carbon-coated pyrite (FeS2@C) nanooctahedra have been fabricated via a facile solvothermal method with subsequent carbon-coating-annealing and acid-pickling steps. Benefitting from their high conductivity, short Na+ diffusion distance, large surface area, and robust structure stability, the FeS2@C electrodes delivered a high specific capacity, excellent rate capability and superiorly stable cycling performance, suggesting a potential application in advanced sodium ion batteries.
- Published
- 2019