Open AccessHighly mesoporous and chemically bonded Fe3O4/N-doped carbon nanocomposite with an outstanding cycling life as lithium-ion-battery anode
Author(s) -
Zhenwei Li,
Jiayang Li,
Meisheng Han
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/687/1/012145
Subject(s) - anode , materials science , nanocomposite , mesoporous material , chemical engineering , nanoparticle , carbon fibers , doping , lithium (medication) , lithium ion battery , nanotechnology , composite number , battery (electricity) , composite material , electrode , chemistry , organic chemistry , catalysis , medicine , power (physics) , physics , optoelectronics , quantum mechanics , endocrinology , engineering
Owing to high theoretical capacity (926 mAh g −1 ), Fe 3 O 4 has achieved much focus as a prospective anode material for lithium-ion batteries (LIBs). A one-step vapor-pressured induced approach considering the synthesis of chemically bonded Fe 3 O 4 /N-doped carbon nanocomposites (Fe 3 O 4 /NC) via Fe-O-C and Fe-N-C, together with the encapsulation of Fe 3 O 4 nanoparticles (∼80 nm) into highly mesoporous N-doped carbon matrix via pyrolyzing the mixture of iron oxalate and dimethylformamide in a sealed vessel, does not exist at present. As LIB anode, the Fe 3 O 4 /NC presents a high capacity of 1250.2 mAh g −1 at 0.1 A g −1 , an outstanding cyclability with a capacity of 600.1 mAh g −1 after 4000 cycles at 5 A g −1 , and a high rate capability (244.8 mAh g −1 at 20 A g −1 ). Such excellent performances can be ascribed to its unique structure that Fe 3 O 4 nanoparticles tightly encapsulated into highly mesoporous N-doped carbon matrix can increase active sites, electrical conductivity, and cyclability.