Pomegranate-inspired SnS/ZnS@C heterostructural nanocubes towards high-performance sodium ion battery

Ai, Jinjin; Zhao, Xueyan; Lei, Yike; Yang, Shuai; Xu, Qing; Lai, Chunyan; Peng, Chengxin

doi:10.1016/j.apsusc.2019.143631

Cited by 32 publications

(25 citation statements)

References 49 publications

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“…The pyrolysis of polymers is a simple and efficient approach for preparing carbonaceous materials, which has been widely used to in situ decorate the MMSs. Various polymers, such as poly(styrene-acrylic), [70] polydopamine (PDA), [71][72][73][74][75] poly(3,4-ethylenedioxythiophene), [76] polyacrylonitrile, [77] dextrin, [78] and polypyrrole [79,80] have been used as precursors to generate highly conductive carbon materials. For example, a carbon-coated Fe 9 S 10 @MoS 2 heterostructure was developed by Liu and co-workers.…”

Section: Mmss With Carbonaceous Materials For Sibsmentioning

confidence: 99%

Recent Advances on Mixed Metal Sulfides for Advanced Sodium‐Ion Batteries

2020

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By virtue of the advantageous features of diverse material species, compositions, crystalline phases, valence states, architectures, and controllable nanostructures/ morphologies, metal sulfides manifest high electrochemical activity for sodium storage. Numerous metal sulfides have been applied for sodium storage and show promising electrochemical results. [36-38] Metal sulfides usually have higher electronic conductivity compared to metal oxide counterparts. [39,40] And the bond energy of M-S in metal sulfides is weaker than the M-O in metal oxides, leading to faster kinetics during the conversion reactions. [41] Among the metal sulfides based electrode materials, mixed metal sulfides (MMSs) with mixture phases of different metal sulfides demonstrate richer redox reactions and higher electronic conductivity compared to the single-component metal sulfides, showing intrinsic advantages for sodium storage. [39] For MMSs, it is verified that the phase boundaries at the heterointerfaces can provide abundant lattice mismatches, distortions, and defects, which have great influences on the charge carrier transport behavior by regulating the reaction kinetics and long-range disorder. [42] Meanwhile, driven by the internal electric field at the heterointerfaces due to the dissimilar coupling components with different bandgaps, the interfacial reaction kinetics and electron/ion transport can be greatly promoted. [43] Additionally, owing to the synergetic effect of different components, the uniformly dispersed intermediate nanocrystals during electrochemical reactions can avoid the aggregation of generated metal nanoparticles thus obtaining good cyclability. [44] And the diverse redox potentials and out-of-step electrochemical reactions of different components would mitigate the strain during sodium uptake/extraction processes. [45] Therefore, it is inferred that MMSs with suitable compositions could achieve excellent electrochemical performance. In general, the sodium storage mechanisms of metal sulfides are attributed to the combination of insertion, conversion, and/or alloying reactions. [37,46,47] During these reactions, the electrodes inevitably undergo severe volume change, which causes the collapse and pulverization of the structures and fading of capacity during repeated cycling. To address these issues, nanostructure engineering and compositing with conductive carbonaceous materials are reliable strategies for boosting the sodium storage properties of MMSs. [39] The nanostructured electrodes have several structure-dependent merits, resulting from the nanosized building units, large surface Sodium-ion batteries (SIBs) have drawn enormous attention in the past few years from both academic and industrial battery communities in view of the fascinating advantages of rich abundance and low cost of sodium resources. Among various electrode materials, mixed metal sulfides (MMSs) stand out as promising negative electrode materials for SIBs considering their superior structural and compositional advantages, such as decent el...

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Section: Mmss With Carbonaceous Materials For Sibsmentioning

confidence: 99%

Recent Advances on Mixed Metal Sulfides for Advanced Sodium‐Ion Batteries

2020

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“…In recent years, anisotropic materials such as SnS, SnSe, and SnSSe alloys have drawn much interest because of their potential to be a new generation material. The SnS x Se 1−x alloy system has been well investigated for applications in sensors [1], batteries [2,3], thermoelectric devices [4][5][6][7][8], and photovoltaics [9]. Knowledge of the optical properties of SnS x Se 1−x is required to design and fabricate these devices efficiently and to bring them to realistic applications.…”

Section: Introductionmentioning

confidence: 99%

Optical Properties of Anisotropic SnSxSe1−x for Arbitrary Compositions

Nguyen

Kim

et al. 2020

J. Korean Phys. Soc.

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Here, we report parameter values for the model dielectric function (ε = ε1 +iε2) of the SnSxSe1−x alloy in the spectral range from 0.74 to 6.4 eV and the composition range 0 ≤ x ≤ 1 by using the Tauc-Lorentz (TL) model. The experimentally reported dielectric function data for SnSxSe1−x along the zigzag (a) and the armchair (b) directions were borrowed from a previous study for selected compositions. We successfully reproduced the asymmetric nature of the dielectric function with TL lineshapes. The ε data are parameterized by using six and seven TL components for the zigzag and the armchair directions, respectively. The obtained parameters at several compositions were fit with cubic polynomials, which can be used to determine the dielectric function and the refractive index as continuous functions of the energy and the composition. Our results will be useful for optoelectronic device design based on SnSxSe1−x materials.

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“…This can significantly increase the resistance of the hybrid sensor and then a high electrical response. Meanwhile, the highly conductive rGO acts as high‐speed pathways for the fast transportation of electron in the hybrid, [ 24 ] which contributes to the rapid dynamic performance of the hybrid sensor.…”

Section: Resultsmentioning

confidence: 99%

Graphene‐Oriented Construction of 2D SnS for Methanol Gas‐Sensor Application

Qin

Wang

Bai

2021

Physica Status Solidi (a)

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Group‐IV monochalcogenides with unique 2D puckered honeycomb structure (MX, M = Ge, Sn/X = S, Se) have a great prospect in the gas‐sensor field. Herein, an exploratory study on 2D SnS is synthesized through a solvothermal method, is performed for promising methanol sensor. To break through the inhibition of the general agglomeration and poor conductivity of solvothermal synthesized SnS on gas‐sensing performance, a hybrid of SnS@rGO is designed and constructed based on poly(diallyl dimethyl ammonium chloride) (PDDA)‐assisted electrostatic self‐assembly. With directed growth of SnS on the PDDA‐modulated graphene oxide (GO), an expected architecture characterized by well‐dispersed loosely arranged SnS nanosheets attaching on the highly conductive rGO is achieved. The unique hybrid architecture and the conductivity modulation of rGO promotes sensing responses and dynamic characteristic of SnS‐based sensor toward methanol detection. The achieved SnS@rGO hybrid with less stacking architecture of SnS displays a ≈3.3‐fold enhancement in gas response to 15 ppm methanol in comparison to the flower‐like stacked SnS. The formation mechanism of SnS@rGO hybrid based on the oriented growth of SnS by PDDA‐modulated GO is clarified schematically and the response enhancement of the hybrid is demonstrated in terms of the unique architecture and the conductivity modulation.

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Pomegranate-inspired SnS/ZnS@C heterostructural nanocubes towards high-performance sodium ion battery

Cited by 32 publications

References 49 publications

Recent Advances on Mixed Metal Sulfides for Advanced Sodium‐Ion Batteries

Recent Advances on Mixed Metal Sulfides for Advanced Sodium‐Ion Batteries

Optical Properties of Anisotropic SnSxSe1−x for Arbitrary Compositions

Graphene‐Oriented Construction of 2D SnS for Methanol Gas‐Sensor Application

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