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Ionic Liquid Assisted Electrospinning of Porous LiFe 0.4 Mn 0.6 PO 4 /CNFs as Free‐Standing Cathodes with a Pseudocapacitive Contribution for High‐Performance Lithium‐Ion Batteries
Author(s) -
Yang Jing,
Tan Rou,
Li Di,
Ma Jianmin,
Duan Xiaochuan
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201905140
Subject(s) - electrospinning , materials science , ionic liquid , cathode , porosity , electrochemistry , ionic conductivity , electrode , chemical engineering , lithium (medication) , lithium iron phosphate , carbon fibers , nanotechnology , ionic bonding , ion , composite material , catalysis , polymer , electrolyte , composite number , chemistry , organic chemistry , medicine , engineering , endocrinology
In pursuit of high‐performance cathode materials for lithium‐ion batteries with high energy and power densities, porous LiFe 0.4 Mn 0.6 PO 4 /CNF free‐standing electrodes have been successfully prepared through a facile ionic liquid (IL) assisted electrospinning method. Owing to the hierarchical porosity and N‐doped carbon layer derived from the ionic liquid, the resulting electrodes exhibited superior electrochemical performances with an improvement of conductivity and pseudocapacitive contribution, delivering a discharge capability of 162.7, 133.5, 114.5, and 102.6 mAh g −1 at the current rates of 0.1, 1, 5, and 10 C, respectively. It is highly expected that this facile IL‐assisted electrospinning method will lead to further developments for other phosphate‐based free‐standing electrodes, which offers a new route in designing polyanionic cathodes for high‐performance Li‐ion batteries.