Research paper
Metallurgical Pyrolysis toward [email protected] Carbon Composite for Lithium Storage

(Click DOI to download directly)

Under a Creative Commons license
open access

Abstract

Elemental state matter-heteroatom-doped carbon composites are of great importance for the development of anode in lithium ion batteries (LIBs). In this article, metal−organic frameworks (MOFs) are adopted as precursor to prepare Co composites via metallurgical pyrolysis under controllable conditions. The obtained nitrogen-doped porous carbon-Co nanocomposite possesses core-shell structure ([email protected]). [email protected] exhibits the best Li storage performances as anode active matter. After the 200th cycles at current density of 0.2 A·g−1, a reversible capacity of 870 mA·h·g−1 is retained. A reversible capacity of 275 mA·h·g−1 still maintains with 5 A·g−1. [email protected] presents a high reversible capacity with excellent cycle stability. Considering the corresponding experimental and theoretical results, the Co0-based N-doped porous carbon composite is proposed to work as LIBs anode matter. These results provide a new design idea for electrode matters of metallic ion battery, and demonstrate that MOFs pyrolysis is an effective method for the construction of elemental state anode materials.

Graphical abstract

Co based metal−organic frameworks are used as pyrolysis precursor to prepare nitrogen-doped carbon-Co composites possessing [email protected] structure. The experimental results, combining with the theoretical calculation, demonstrate an effective metallurgical method for the construction of elemental state Li storage materials.

Image 1

Keywords

Co nanoparticles (NPs)
core-shell structure
lithium ion battery anode
metal−organic framework (MOF)
nitrogen-doped carbon
View Abstract