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Formation of Fe 3 O 4 Nanoparticles Embedded in an Olive‐Shaped Carbon Skeleton as a High‐Performance Anode Material
Author(s) -
Yao Xiufeng,
Yang Zhanxu,
Qi Chengyuan,
Li Yue,
Cai Tianfeng,
Ren Tieqiang
Publication year - 2017
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201700130
Subject(s) - materials science , anode , nanoparticle , pyrolysis , carbon fibers , chemical engineering , lithium (medication) , nanotechnology , composite material , electrode , chemistry , medicine , endocrinology , engineering , composite number
Fe 3 O 4 is a potential anode material for lithium‐ion batteries, because of its environmentally friendliness, high capacity, and inexpensive availability. However, Fe 3 O 4 causes a severe capacity attenuation, owing to a large volume change, and it has a poor rate capability, owing to low conductivity. In this work, Fe 3 O 4 nanoparticles embedded in an olive‐shaped carbon skeleton were prepared through the one‐step pyrolysis of metal‐organic framework (MOF) precursors in a nitrogen atmosphere. The Fe 3 O 4 nanoparticles were evenly embedded in the olive‐shaped carbon skeleton and the Fe 3 O 4 particle size was around 23 nm in width and 38 nm in length, which exhibits enhanced cycling and rate performance. The prepared Fe 3 O 4 /C material achieves a high initial charge and discharge capacity of 1423.0 mAhg −1 and 925.5 mAhg −1 , respectively, and shows a remarkable cycle‐stable specific capacity of 877.0 mAhg −1 after 80 cycles at 0.5 C. High specific discharge capacities of 810, 720, 660, 585, 516, 486, and 460 mAhg −1 were obtained at 0.5, 1, 2, 6, 12, 15, and 20 C, respectively.