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A 3D Porous MgFe 2 O 4 Integrative Electrode as a Binder‐Free Anode with High Rate Capability and Long Cycle Lifetime
Author(s) -
Yin Yanhong,
Liu Wenfeng,
Gao Rongzhen,
Yang Shuting
Publication year - 2019
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201801374
Subject(s) - anode , materials science , electrode , calcination , porosity , hydrothermal circulation , lithium (medication) , chemical engineering , current density , polarization (electrochemistry) , faraday efficiency , nanotechnology , composite material , catalysis , chemistry , medicine , biochemistry , physics , quantum mechanics , engineering , endocrinology
A superior 3D architecture Ni foam/MgFe 2 O 4 integrative electrode was firstly designed and synthesized via a simple hydrothermal method and subsequent calcination as a binder‐free anode for lithium‐ion batteries (LIBs). MgFe 2 O 4 nanoparticles with diameter of about 60 nm interconnect with each other to form porous nanosheets and anchor on the Ni foam (N‐MFO). The 3D architectural design with superior conductivity and a strong skeleton structure not only provides fast kinetics, reduces the polarization and enhances the rate performance, but also buffers volume expansion and improves the cycle stability during the discharge/charge process. In addition, the interfacial lithium storage of the N‐MFO electrode promotes high lithium‐storage capacity, superior cycle stability and impressive rate capability. Even cycling at a current density of 5 A g −1 for 1000 cycles, the capacity remains stable at about 780 mAh g −1 .