Covalent organic frameworks converted N, B co-doped carbon spheres with excellent lithium ion storage performance at high current density

Bin Ni; Yuquan Li; Taiqiang Chen; Ting Lu; Likun Pan

doi:10.1016/j.jcis.2019.02.009

Covalent organic frameworks converted N, B co-doped carbon spheres with excellent lithium ion storage performance at high current density

J Colloid Interface Sci. 2019 Apr 15:542:213-221. doi: 10.1016/j.jcis.2019.02.009. Epub 2019 Feb 4.

Authors

Bin Ni¹, Yuquan Li¹, Taiqiang Chen², Ting Lu³, Likun Pan¹

Affiliations

¹ Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Materials Science, East China Normal University, 3663 N. Zhongshan Rd., Shanghai 200062, China.
² State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China.
³ Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Materials Science, East China Normal University, 3663 N. Zhongshan Rd., Shanghai 200062, China; Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China. Electronic address: tlu@phy.ecnu.edu.cn.

PMID: 30753944
DOI: 10.1016/j.jcis.2019.02.009

Abstract

Covalent organic frameworks (COFs) with devisable nanostructures have exhibited extensive application prospects in energy storage and conversion. In this work, spherical COFs were successfully utilized as an ideal precursor for N, B co-doped carbon spheres (NBCs) that display hierarchical spherical architectures with rich pores. When applied as lithium ion batteries (LIBs) anode, NBCs exhibit high reversible specific capacity and outstanding long-life cycling stability (205.5 mAh g^-1 at 5.0 A g^-1 and 171.4 mAh g^-1 at 10.0 A g^-1 after 5000 cycles) owing to their hierarchical porosity, unique structure and in-situ N, B co-doping. The excellent lithium storage ability, especially satisfactory long cycling stability, enables NBCs to be a promising candidate for LIBs.

Keywords: Covalent organic framework; Lithium-ion battery; Long cycling stability; N, B co-doped carbon sphere.