title: Carbonized-leaf Membrane with Anisotropic Surfaces for Sodium-ion Battery.
abstract: A simple one-step thermal pyrolysis route has been developed to prepare carbon membrane from a natural leaf. The carbonized leaf membrane possesses anisotropic surfaces and internal hierarchical porosity, exhibiting a high specific capacity of 360 mAh/g and a high initial Coulombic efficiency of 74.8% as a binder-free, current-collector-free anode for rechargeable sodium ion batteries. Moreover, large-area carbon membranes with low contact resistance are fabricated by simply stacking and carbonizing leaves, a promising strategy toward large-scale sodium-ion battery developments.
authors.affiliation: Department of Materials Science and Engineering, University of Maryland , College Park, Maryland 20742, United States.|National Center for Nanoscience and Technology , 11, Beiyitiao, Zhonguancun, Beijing, 100190, China.
authors.forename: Hongbian
authors.initials: H
authors.lastname: Li
authors.affiliation: Department of Materials Science and Engineering, University of Maryland , College Park, Maryland 20742, United States.
authors.forename: Fei
authors.initials: F
authors.lastname: Shen
authors.affiliation: Department of Materials Science and Engineering, University of Maryland , College Park, Maryland 20742, United States.
authors.forename: Wei
authors.initials: W
authors.lastname: Luo
authors.affiliation: Department of Materials Science and Engineering, University of Maryland , College Park, Maryland 20742, United States.
authors.forename: Jiaqi
authors.initials: J
authors.lastname: Dai
authors.affiliation: Department of Materials Science and Engineering, University of Maryland , College Park, Maryland 20742, United States.
authors.forename: Xiaogang
authors.initials: X
authors.lastname: Han
authors.affiliation: Department of Materials Science and Engineering, University of Maryland , College Park, Maryland 20742, United States.
authors.forename: Yanan
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Department of Materials Science and Engineering, University of Maryland , College Park, Maryland 20742, United States.
authors.forename: Yonggang
authors.initials: Y
authors.lastname: Yao
authors.affiliation: Department of Materials Science and Engineering, University of Maryland , College Park, Maryland 20742, United States.
authors.forename: Hongli
authors.initials: H
authors.lastname: Zhu
authors.affiliation: Department of Materials Science and Engineering, University of Maryland , College Park, Maryland 20742, United States.
authors.forename: Kun
authors.initials: K
authors.lastname: Fu
authors.affiliation: Department of Materials Science and Engineering, University of Maryland , College Park, Maryland 20742, United States.
authors.forename: Emily
authors.initials: E
authors.lastname: Hitz
authors.affiliation: Department of Materials Science and Engineering, University of Maryland , College Park, Maryland 20742, United States.
authors.forename: Liangbing
authors.initials: L
authors.lastname: Hu
keywords: carbon membrane; free-standing; initial Coulombic efficiency; leaf; sodium ion battery