title: 2D Film of Carbon Nanofibers Elastically Astricted MnO Microparticles: A Flexible Binder-Free Anode for Highly Reversible Lithium Ion Storage.
abstract: MnO as anode materials has received particular interest owing to its high specific capacity, abundant resources, and low cost. However, serious problems related to the large volume change (>170%) during the lithiation/delithiation processes still results in poor rate capability and fast capacity decay. With homogenous crystals of MnO grown in the network of carbon nanofibers (CNF), binding effect of CNF can effectively weaken the volume change of MnO during cycles. In this work, a CNF/MnO flexible electrode for lithium-ion batteries is designed and synthesized. The CNF play the roles of conductive channel and elastically astricting MnO particles during lithiation/delithiation. CNF/MnO as binder-free anode delivers specific capacity of 983.8 mAh g-1after 100th cycle at a current density of 0.2 A g-1, and 600 mAh g-1at 1 A g-1which are much better than those of pure MnO and pure CNF. The ex-situ morphologies clearly show the relative volume change of MnO/CNF as anode under various discharging and charging times. CNF can elastically buffer the volume change of MnO during charging/discharging cycles. A facile and scalable approach for synthesizing a novel flexible binder-free anode of CNF/MnO for potential application in highly reversible lithium storage devices is presented.
authors.affiliation: Jiangsu Laboratory of Advanced Functional Material, School of Chemistry and Materials Engineering, Changshu Institute of Technology, Changshu, 215500, P. R. China.
authors.forename: Ting
authors.initials: T
authors.lastname: Wang
authors.affiliation: Jiangsu Laboratory of Advanced Functional Material, School of Chemistry and Materials Engineering, Changshu Institute of Technology, Changshu, 215500, P. R. China.
authors.forename: Hangang
authors.initials: H
authors.lastname: Li
authors.affiliation: Jiangsu Laboratory of Advanced Functional Material, School of Chemistry and Materials Engineering, Changshu Institute of Technology, Changshu, 215500, P. R. China.
authors.forename: Shaojun
authors.initials: S
authors.lastname: Shi
authors.affiliation: Jiangsu Laboratory of Advanced Functional Material, School of Chemistry and Materials Engineering, Changshu Institute of Technology, Changshu, 215500, P. R. China.
authors.forename: Ting
authors.initials: T
authors.lastname: Liu
authors.affiliation: Jiangsu Laboratory of Advanced Functional Material, School of Chemistry and Materials Engineering, Changshu Institute of Technology, Changshu, 215500, P. R. China.
authors.forename: Gang
authors.initials: G
authors.lastname: Yang
authors.affiliation: Energy Materials Laboratory, School of Chemistry, University of East Anglia, Norwich, NR4 7TJ, UK.
authors.forename: Yimin
authors.initials: Y
authors.lastname: Chao
authors.affiliation: Jiangsu Laboratory of Advanced Functional Material, School of Chemistry and Materials Engineering, Changshu Institute of Technology, Changshu, 215500, P. R. China.
authors.forename: Fan
authors.initials: F
authors.lastname: Yin
keywords: binder-free anode materials; composite structure; electrochemical performance; flexible films; lithium-ion batteries