Flower-like SnS₂ composite with 3D pyrolyzed bacterial cellulose as the anode for lithium-ion batteries with ultralong cycle life and superior rate capability

Abstract

The enormous volume expansion during cycling and poor electron conductivity of SnS2 limit its cycling stability and high rate capability.

Lithium Storage Properties of TiC‐Modified SnS2 Nanosheets

“…23-0677). For SnS 2 /TiC nanosheets, the strong diffraction peaks located at 15.0°, 28.2°, 32.1°, and 50.0°can be assigned to the (001), (100), (101), and (101) planes of hexagonal SnS 2 and the peaks at SnS 2 -pBC Hydrothermal 409 mAh g À 1 at 10 A g À 1 after 1500 cycles [19] SnS 2 /TiO 2 Hydrothermal 450 mAh g À 1 at 0.065 A g À 1 after 90 cycles [20] MoO 3 /SnS 2 nanowire Two-step synthesis 504 mAh g À 1 at 0.1 A g À 1 after 100 cycles [12] SnS 2 /graphene paper (SGP) Novel hydrothermal 593 mAh g À 1 at 0.1 A g À 1 after 200 cycles [21] SnS 2 /NC@GO Solvothermal and annealing 603 mAh g À 1 at 0.1 A g À 1 after 50 cycles [18] NiCo 2 S 4 / SnS 2 Template-free hydrothermal 627 mAh g À 1 at 1 A g À 1 after 300 cycles [9] LEGr@SnS 2 microwave-assisted solvothermal 664 mAh g À 1 at 0.3 A g À 1 after 200 cycles [22] SnS 2 /C-rGO Hydrothermal and low-temperature CVD 952 mAh g À 1 at 0.1 A g À 1 after 90 cycles The decrease in the crystallinity of the samples with high TiC contents is related to the presence of smaller, thinner SnS 2 nanosheets.…”

“…To address these flaws, many researchers try to improve electrochemical performances of SnS 2 ‐based anodes for Li‐ion batteries by choosing different materials and methods [9–23] . One strategy is to synthesize nanostructured SnS 2 , in forms including nanosheets, [11] nanospheres, [9] and nanowires [12] .…”

“…To address these flaws, many researchers try to improve electrochemical performances of SnS 2 -based anodes for Li-ion batteries by choosing different materials and methods. [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] One strategy is to synthesize nanostructured SnS 2 , in forms including nanosheets, [11] nanospheres, [9] and nanowires. [12] The nanostructure can ameliorate the huge volume change in SnS 2 during cycling and also increase electrode/electrolyte contact areas, thus shortening the diffusion path of Li + : however, nanostructured SnS 2 is prone to severe structural agglomeration during cycling, degrading of its electrochemical performance.…”

An Investigation into the Charge‐Storage Mechanism of MnO@Graphite as Anode for Lithium‐Ion Batteries at Low Temperature

“…The urgent demand in large‐power application such as electric vehicles tremendously appealed enhancing energy density for lithium‐ion batteries (LIBs) . Recently, pseudocapacitive approach has arrested increasing attention due to providing extra charge storage and obviously improving energy density.…”

“…The urgent demand in large-power application such as electric vehicles tremendously appealed enhancing energy density for lithium-ion batteries (LIBs). [1] Recently, pseudocapacitive approach has arrested increasing attention due to providing extra charge storage and obviously improving energy density. In general, pseudocapacitance is produced by monolayer adsorption of ions at an electrode surface, surface redox reactions [2] or ion intercalation such as T-Nb 2 O 5 .…”