TY - JOUR
T1 - SnO2@PANI Core-Shell Nanorod Arrays on 3D Graphite Foam
T2 - A High-Performance Integrated Electrode for Lithium-Ion Batteries
AU - Zhang, Feng
AU - Yang, Chengkai
AU - Gao, Xin
AU - Chen, Shuai
AU - Hu, Yiran
AU - Guan, Huanqin
AU - Ma, Yurong
AU - Zhang, Jin
AU - Zhou, Henghui
AU - Qi, Limin
N1 - Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/3/22
Y1 - 2017/3/22
N2 - 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)@SnO2 nanorod arrays (NRAs)@polyaniline (PANI) hybrid architecture was constructed via solvothermal growth followed by electrochemical deposition. Aligned SnO2 NRAs were uniformly grown on the surface of GF, and a PANI shell with a thickness of ∼40 nm was coated on individual SnO2 nanorods, forming a SnO2@PANI core-shell structure. Benefiting from the synergetic effect of 3D GF with large surface area and high conductivity, SnO2 NRAs 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@SnO2 NRAs@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-1 at a high rate of 3 A g-1.
AB - 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)@SnO2 nanorod arrays (NRAs)@polyaniline (PANI) hybrid architecture was constructed via solvothermal growth followed by electrochemical deposition. Aligned SnO2 NRAs were uniformly grown on the surface of GF, and a PANI shell with a thickness of ∼40 nm was coated on individual SnO2 nanorods, forming a SnO2@PANI core-shell structure. Benefiting from the synergetic effect of 3D GF with large surface area and high conductivity, SnO2 NRAs 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@SnO2 NRAs@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-1 at a high rate of 3 A g-1.
KW - PANI
KW - SnO nanorod arrays
KW - graphite foam
KW - integrated electrode
KW - lithium-ion batteries
UR - http://www.scopus.com/inward/record.url?scp=85016030980&partnerID=8YFLogxK
U2 - 10.1021/acsami.6b15880
DO - 10.1021/acsami.6b15880
M3 - Article
C2 - 28248075
AN - SCOPUS:85016030980
SN - 1944-8244
VL - 9
SP - 9620
EP - 9629
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
IS - 11
ER -