title: NiSe2Nanooctahedra as an Anode Material for High-Rate and Long-Life Sodium-Ion Battery.
abstract: In this article, we report NiSe2nanooctahedra as a promising anode material for sodium-ion batteries (SIBs). They exhibit outstanding long-term cyclic stability (313 mAh/g after 4000 cycles at 5 A/g) and excellent high-rate capability (175 mAh/g at 20 A/g). Besides, the initial Coulombic efficiency of NiSe2is also very impressive (over 90%). Such remarkable performances are attributed to good conductivity, structural stability, and the pseudocapacitive behavior of the NiSe2. Furthermore, the sodium ion storage mechanism of NiSe2is first investigated by in situ XRD and ex situ XRD. These highlights give NiSe2a competitive strength for rechargeable SIBs.
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, China.
authors.forename: Shaohua
authors.initials: S
authors.lastname: Zhu
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, China.
authors.forename: Qidong
authors.initials: Q
authors.lastname: Li
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, China.
authors.forename: Qiulong
authors.initials: Q
authors.lastname: Wei
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, China.
authors.forename: Ruimin
authors.initials: R
authors.lastname: Sun
authors.affiliation: Center of Materials Research and Testing, Wuhan University of Technology , Wuhan 430070, China.
authors.forename: Xiaoqing
authors.initials: X
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, China.
authors.forename: Qinyou
authors.initials: Q
authors.lastname: An
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, China.
authors.forename: Liqiang
authors.identifier: http://orcid.org/0000-0003-4259-7725
authors.initials: L
authors.lastname: Mai
keywords: NiSe2 nanooctahedra; anode; high-rate; long-term cycle life; sodium-ion batteries