title: SnO2@PANI Core-Shell Nanorod Arrays on 3D Graphite Foam: A High-Performance Integrated Electrode for Lithium-Ion Batteries.
abstract: The rational design and controllable fabrication of electrode materials with tailored structures and superior performance is highly desirable for the next-generation lithium ion batteries (LIBs). In this work, a novel three-dimensional (3D) graphite foam (GF)@SnO2nanorod arrays (NRAs)@polyaniline (PANI) hybrid architecture was constructed via solvothermal growth followed by electrochemical deposition. Aligned SnO2NRAs were uniformly grown on the surface of GF, and a PANI shell with a thickness of ∼40 nm was coated on individual SnO2nanorods, forming a SnO2@PANI core-shell structure. Benefiting from the synergetic effect of 3D GF with large surface area and high conductivity, SnO2NRAs offering direct pathways for electrons and lithium ions, and the conductive PANI shell that accommodates the large volume variation of SnO2, the binder-free, integrated GF@SnO2NRAs@PANI electrode for LIBs exhibited high capacity, excellent rate capability, and good electrochemical stability. A high discharge capacity of 540 mAh g-1(calculated by the total mass of the electrode) was achieved after 50 cycles at a current density of 500 mA g-1. Moreover, the electrode demonstrated superior rate performance with a discharge capacity of 414 mAh g-1at a high rate of 3 A g-1.
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Zhang
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China.
authors.forename: Chengkai
authors.initials: C
authors.lastname: Yang
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Gao
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China.
authors.forename: Shuai
authors.initials: S
authors.lastname: Chen
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China.
authors.forename: Yiran
authors.initials: Y
authors.lastname: Hu
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China.
authors.forename: Huanqin
authors.initials: H
authors.lastname: Guan
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China.
authors.forename: Yurong
authors.initials: Y
authors.lastname: Ma
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China.
authors.forename: Jin
authors.identifier: http://orcid.org/0000-0003-3731-8859
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China.
authors.forename: Henghui
authors.initials: H
authors.lastname: Zhou
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University , Beijing 100871, China.
authors.forename: Limin
authors.identifier: http://orcid.org/0000-0003-4959-6928
authors.initials: L
authors.lastname: Qi
keywords: PANI; SnO2 nanorod arrays; graphite foam; integrated electrode; lithium-ion batteries