Interlayer expansion of few-layered Mo-doped SnS₂ nanosheets grown on carbon cloth with excellent lithium storage performance for lithium ion batteries

Abstract

Mo-doped SnS2 nanosheets supported on carbon cloth are synthesized. The nanosheets, as additive-free integrated electrodes for LIBs, exhibit a high initial discharge capacity, superior cycling performance and rate capability.

Metallic‐State SnS2 Nanosheets with Expanded Lattice Spacing for High‐Performance Sodium‐Ion Batteries

“…In operando synchrotron XRD and theoretical calculations were used to gain insighti nto the influence of foreign metal-ion doping and its location. [26,[31][32] Furthermore, the X-ray photoelectron spectroscopy (XPS) resultso ft he CP@Ni9-SnS 2 sample also indicatedt hat the SnS 2 phase was retained after Ni doping (Figure S2). The inherenta dvantages of this architecture are shorter paths for ion insertiona nd extraction, larger contact area for more sodium diffusion pathways, and superior electrolyte penetration.…”

“…(3)]. [26] First, after Ni-intercalation, the expanded interlayer spacingn ot only providesm ore free space to facilitate sodium-ion intercalation and de-intercalation but also effectively alleviates stress from the volume expansiont om aintain the structure stability of the active material during the cycles. Furthermore, compared with CP@SnS 2 ,t he CP@Ni9-SnS 2 exhibited better overlap with each other in the CV curves during the consecutive scans, demonstratingt hat intercalationo fN ic an indeed improve the reversibility of the SnS 2 electrode.…”

“…[14,16,[18][19][20] However,t hese methods cannota ddress the electronic conductivity issues of SnS 2 semiconductors from am aterialp erspective.R ecently,t he approach of dopingm etal ions hasp rovenv ery fruitful and effective for improving the electrochemical performance by increasing the electronic conductivity and ion mobility.F or example, Se and Fe (or Co and Ni)c o-doped NbS 2 nanosheets showed significantly improved Li + /Na + storage properties compared with those of pure NbS 2 . [23][24][25][26][27] [22] However,t here are few studies devotedt oi nvestigating the role of the positiono fd oped metal ions in the lattice of ah ost materiala nd the related properties with respectt oc harged ensity redistribution, electron state density,a nd energy band structure.…”

A Simple One‐Pot Strategy for Synthesizing Ultrafine SnS2 Nanoparticle/Graphene Composites as Anodes for Lithium/Sodium‐Ion Batteries

“…During the simple one-pot preparation of SnS 2 /graphene composites, we added more graphene oxide for SG75. [3,8,26,33,[38][39][40][41][42][43] Such great electrochemical performance showst hat the simple and one-pot synthesized SG75 composite has great potential in large-scale applications as the anode for LIBs. [37] Thus, the SG75 electrode obtained am ore stable cycling performance (thec ycling performance of pure graphene oxide and commercialS nS 2 is shown in Figure S6).…”

Reduced Graphene Oxide Boosted Ultrafine Cu2SnS3 Nanoparticles for High‐performance Sodium Storage

“…[9] In addition, sulfides possess the advantage of high ionic conductivity and thus good rate properties; become a kind of competitive anode materials for the construction of SIBs. [12] However, the essential intrinsic defects of binary sulfides, such as serious expansion/shrink during cycling process and low electrical conductivity, hinder its practical application. [12] However, the essential intrinsic defects of binary sulfides, such as serious expansion/shrink during cycling process and low electrical conductivity, hinder its practical application.…”