Construction of hierarchical NiS@C/rGO heterostructures for enhanced sodium storage

Song, Zhiyang; Gan, Wang; Chen, Ya; Chang, Qiang; Lu, Y.; Zhang, Wen

doi:10.1016/j.cej.2022.134633

Cited by 37 publications

(30 citation statements)

References 58 publications

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“…We confirm this with electrochemical impedance spectroscopy (EIS), in which we observe SnS/HGF having a lower charge-transfer resistance than defective SnS x /HGF (Fig. 5c) [52]. This is true as SnS has higher crystallinity than SnS 2 and thus favours fast electron transport, which translates into better high-rate performance in the cathodes; (3) beyond the different ohmic contributions of the studied SnS x /HGF, the different phases of tin (α-tin and β-tin) produced by SnS and SnS 2 during cycling also can affect the electrode performance [53].…”

Section: Electrochemical Performancesupporting

confidence: 73%

Origin of Excellent Charge Storage Properties of Defective Tin Disulphide in Magnesium/Lithium-Ion Hybrid Batteries

Fan

Tebyetekerwa

et al. 2022

Nano-Micro Lett.

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Lithium-ion batteries (LIBs) are excellent electrochemical energy sources, albeit with existing challenges, including high costs and safety concerns. Magnesium-ion batteries (MIBs) are one of the potential alternatives. However, the performance of MIBs is poor due to their sluggish solid-state Mg2+ diffusion kinetics and severe electrode polarizability. Rechargeable magnesium-ion/lithium-ion (Mg2+/Li+) hybrid batteries (MLHBs) with Mg2+ and Li+ as the charge carriers create a synergy between LIBs and MIBs with significantly improved charge transport kinetics and reliable safety features. However, MLHBs are yet to reach a reasonable electrochemical performance as expected. This work reports a composite electrode material with highly defective two-dimensional (2D) tin sulphide nanosheets (SnSx) encapsulated in three-dimensional (3D) holey graphene foams (HGF) (SnSx/HGF), which exhibits a specific capacity as high as 600 mAh g−1 at 50 mA g−1 and a compelling specific energy density of ~ 330 Wh kg−1. The excellent electrochemical performance surpasses previously reported hybrid battery systems based on intercalation-type cathode materials under comparable conditions. The role played by the defects in the SnSx/HGF composite is studied to understand the origin of the observed excellent electrochemical performance. It is found that it is closely related to the defect structure in SnSx, which offers percolation pathways for efficient ion transport and increased internal surface area assessable to the charge carriers. The defective sites also absorb structural stress caused by Mg2+ and Li+ insertion. This work is an important step towards realizing high-capacity cathode materials with fast charge transport kinetics for hybrid batteries.

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Section: Electrochemical Performancesupporting

confidence: 73%

Origin of Excellent Charge Storage Properties of Defective Tin Disulphide in Magnesium/Lithium-Ion Hybrid Batteries

Fan

Tebyetekerwa

et al. 2022

Nano-Micro Lett.

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“…3d, shows a d-spacing of 0.31 nm, corresponding to the (101) facets of hexagonal CdS nanoboxes. [47][48][49] In addition, a close inspection of the selected area in the HRTEM image further conrms the interface contact between rGO and CdS, which veries the successful construction of the rGO-CdS-3 photocatalyst. Such an intimate interfacial contact for the rGO-CdS-3 nanocomposites would be able to favor the charge carrier transfer process between the two components.…”

Section: Resultsmentioning

confidence: 90%

Self-assembly induction of reduced graphene oxide decorated CdS nanoboxes for photocatalytic hydrogen evolution

Wei¹,

Li²,

Ma³

et al. 2022

Sustainable Energy Fuels

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“…13,14 Nevertheless, with similar drawbacks as the other sulfides, the practical application of NiS is challenged by the intrinsic terrible conductivity and dramatic structural failure and pulverization upon the repeated de-/sodiation process, further inducing rapid capacity fading and poor reversibility of electrochemical reactions. 15,16…”

Section: Introductionmentioning

confidence: 99%

A natural juncus-derived three-dimensional interconnected tubular carbon network decorated with tiny solid-solution metal sulfide nanoparticles achieves efficient sodium storage

Zhao

Yue

et al. 2023

J. Mater. Chem. A

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Construction of hierarchical NiS@C/rGO heterostructures for enhanced sodium storage

Cited by 37 publications

References 58 publications

Origin of Excellent Charge Storage Properties of Defective Tin Disulphide in Magnesium/Lithium-Ion Hybrid Batteries

Origin of Excellent Charge Storage Properties of Defective Tin Disulphide in Magnesium/Lithium-Ion Hybrid Batteries

Self-assembly induction of reduced graphene oxide decorated CdS nanoboxes for photocatalytic hydrogen evolution

A natural juncus-derived three-dimensional interconnected tubular carbon network decorated with tiny solid-solution metal sulfide nanoparticles achieves efficient sodium storage

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