Hollow sandwich-structured N-doped carbon-silica-carbon nanocomposite anode materials for Li ion batteries. (April 2020)

• Record Type: Journal Article
• Authors: Tang, Xinde; Zhao, Chunli; Li, Zhanfeng; Zhang, Yipin; Gu, Shaonan
• Is Part Of: Journal of physics. Volume 1520(2020)
• Publication Date: 2020-04
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1520/1/012012
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: Silica has attracted much attention as a promising anode material for lithium ion batteries (LIBs), however, the low conductivity and unstable solid electrolyte interface (SEI) film limit its applications. In this paper, hollow sandwich-structured N-doped carbon-silica-carbon (CSC) nanoparticles was designed and prepared as anode materials for LIBs. The combination of polymer template approach and dopamine self-oxidation polymerization results in the conformal coatings on the surface of silica, which enhances the conductivity and stability of the composite materials. The hollow sandwich-structured material displays a high reversible capacity of 480 mA h g-1 at current density of 1.0 A g-1 and excellent rate performance, which can be attributed to the synergetic effect of the unique structure of hollow silica and N-doped carbon conformal coatings. The hollow sandwich-structured N-doped carbon-silica-carbon composite materials can be promising anode materials for LIBs.