Open AccessA novel synthesis of Nb2O5@N-CNF nanocomposite as anode material for superior sodium storage
Author(s) -
Yu Zhang,
Fang Li
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/619/1/012015
Subject(s) - anode , materials science , nanocomposite , sodium ion battery , carbon fibers , chemical engineering , porosity , fiber , battery (electricity) , energy storage , raw material , sodium , composite number , nitrogen , electrode , nanotechnology , composite material , metallurgy , chemistry , faraday efficiency , organic chemistry , power (physics) , physics , engineering , quantum mechanics
The development of a novel anode material with excellent cycle performance is of great significance to the promotion of the sodium ion battery. Adopting the renewable material BC as raw material, Nitrogen-doped Nb 2 O 5 -three-dimensional porous carbon fiber network composite (Nb 2 O 5 @N-CNF) is prepared by a low-cost approach in the paper. The in-situ growth of Nb 2 O 5 nano-particles on the carbon fiber surface inhibits the agglomeration of particles. The porous structure of carbon fiber promotes ionic transfer. Meanwhile, the structure of pyridine nitrogen, which is formed by the doping of N atoms, further enhances sodium storage. After 1000 times of cycle under the current density of 2 A g −1 , the capacity of the Nb 2 O 5 @N-CNF electrode is 79 mAh g −1 , its capacity retention increasing significantly, with great application prospect.