title: Assembly of SnSe Nanoparticles Confined in Graphene for Enhanced Sodium-Ion Storage Performance.
abstract: Sodium-ion batteries (SIBs) have attracted much interest as a low-cost and environmentally benign energy storage system, but more attention is justifiably required to address the major technical issues relating to the anode materials to deliver high reversible capacity, superior rate capability, and stable cyclability. A SnSe/reduced graphene oxide (RGO) nanocomposite has been prepared by a facile ball-milling method, and its structural, morphological, and electrochemical properties have been characterized and compared with those of the bare SnSe material. Although the redox behavior of SnSe remains nearly unchanged upon the incorporation of RGO, its electrochemical performance is significantly enhanced, as reflected by a high specific capacity of 590 mA h g(-1) at 0.050 A g(-1) , a rate capability of 260 mA h g(-1) at 10 A g(-1) , and long-term stability over 120 cycles. This improvement may be attributed to the high electronic conductivity of RGO, which also serves as a matrix to buffer changes in volume and maintain the mechanical integrity of the electrode during (de)sodiation processes. In view of its excellent Na(+) storage performance, this SnSe/RGO nanocomposite has potential as an anode material for SIBs.
authors.affiliation: Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun, 130012, P.R. China.
authors.forename: Xu
authors.initials: X
authors.lastname: Yang
authors.affiliation: Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun, 130012, P.R. China.
authors.forename: Rongyu
authors.initials: R
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun, 130012, P.R. China.
authors.forename: Nan
authors.initials: N
authors.lastname: Chen
authors.affiliation: Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun, 130012, P.R. China.
authors.forename: Xing
authors.initials: X
authors.lastname: Meng
authors.affiliation: Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun, 130012, P.R. China.
authors.forename: Peilei
authors.initials: P
authors.lastname: Yang
authors.affiliation: Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun, 130012, P.R. China.|State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, P.R. China.
authors.forename: Chunzhong
authors.initials: C
authors.lastname: Wang
authors.affiliation: Materials Research Center, Tokyo institute of Technology, Yokohama, 226-8501, Japan.
authors.forename: Yaoqing
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun, 130012, P.R. China.
authors.forename: Yingjin
authors.initials: Y
authors.lastname: Wei
authors.affiliation: Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun, 130012, P.R. China.|State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, P.R. China.
authors.forename: Gang
authors.initials: G
authors.lastname: Chen
authors.affiliation: Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun, 130012, P.R. China. dufei@jlu.edu.cn.
authors.forename: Fei
authors.initials: F
authors.lastname: Du
keywords: alloys; graphene; nanoparticles; selenium; sodium; tin