Homogeneous integration of SnS2 quantum dots with S, N-codoped layered graphene for robust lithium storage performance

Yin, Shujuan; Wang, Yishan; Zhang, Xueqian; Sheng, Yun; Lan, Bo; Wei, Chuncheng; Wen, Guangwu

doi:10.1016/j.vacuum.2022.111482

Cited by 5 publications

(4 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There was no evidence for the presence of Sn 2+ (binding energy of 485.8 eV), indicating an absolute conversion of Sn 2+ to Sn 4+ . Similarly, the peaks at 401.9, 400.5, and 399.1 eV in N 1s (Figure d) correspond to the pyrrolic, graphite, and pyridine types of N in NRGO . The chemical bonding of rGO, NRGO, and SnS 2 was characterized by FT-IR (Figure S6).…”

Section: Resultsmentioning

confidence: 92%

See 1 more Smart Citation

Covalent Bond Hybrid Nanostructure of N-doped rGO and Ultrathin SnS₂ with High Porosity for Lithium-Ion Batteries

Ji,

Zhou,

Liu

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

The two-dimensionally layered material tin disulfide (SnS 2 ) has a large layer spacing (0.59 nm) that accelerates the diffusion of Li + and electrons. However, the poor conductivity and huge volume expansion limit its further use. Herein, a covalently tightly assembled SnS 2 @NRGO hybrid nanostructure with high porosity was successfully synthesized by sacrificing PMMA template support strategies. The high porosity and pore volume of SnS 2 @NRGO not only increases the permeability of active material and electrolyte and improves the utilization of active material, but also provides buffer space for the huge volume expansion of ultrathin SnS 2 during the charging and discharging process. In addition, the strong synergistic effect of the covalent bonding and stable hybridization nanostructure provides an efficient Li + transport path through the 3D tightly connected NRGO network. N doping introduces a large number of defects and adds more active sites for lithium intercalation. The SnS 2 @NRGO-3 used as the anodes for LIBs deliver excellent rate performance (540.1 mAh g −1 at a rate of 30 A g −1 ) and outstanding cycle stability (1031.9 mAh g −1 after 500 cycles at 5 A g −1 ; the capacity degradation rate of 0.048% per cycle), which attributed to stable hybrid nanostructure and high pore volume. Therefore, the SnS 2 @NRGO created by us would be a very promising candidate for the future advanced high-rate long-life Li + storage anode.

show abstract

Section: Resultsmentioning

confidence: 92%

“…Similarly, the peaks at 401.9, 400.5, and 399.1 eV in N 1s (Figure 3d) correspond to the pyrrolic, graphite, and pyridine types of N in NRGO. 51 The chemical bonding of rGO, NRGO, and SnS 2 was characterized by FT-IR (Figure S6). The peak at 627 cm −1 belongs to Sn−S.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Covalent Bond Hybrid Nanostructure of N-doped rGO and Ultrathin SnS₂ with High Porosity for Lithium-Ion Batteries

Ji,

Zhou,

Liu

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

show abstract

“…Galvanostatic intermittent technique (GITT) is used to analyze the Li + diffusion coefficient ( D Li+ ) during lithiation at each electrode, as shown in Figure g,h and Figure S4a,b. It can be observed that the D Li+ of the SnO/SnO 2 @G electrode is always much higher than that of SnO@G and SnO 2 @G during the whole charging and discharging process Figure S5 shows that the conductivities of SnO 2 @G, SnO@G, and SnO/SnO 2 @G are 0.01705, 0.0699, and 4.0972 S mm –1 , respectively.…”

Section: Resultsmentioning

confidence: 96%

“…It can be observed that the D Li+ of the SnO/SnO 2 @G electrode is always much higher than that of SnO@G and SnO 2 @G during the whole charging and discharging process. 46 Figure S5 shows that the conductivities of SnO 2 @G, SnO@G, and SnO/SnO 2 @G are 0.01705, 0.0699, and 4.0972 S mm −1 , respectively. It is clear that the presence of heterostructures greatly enhances the conductivity of the composites.…”

Section: Resultsmentioning

confidence: 99%

SnO/SnO₂ Heterojunction Nanoparticles Anchored on Graphene Nanosheets for Lithium Storage

Yin,

Zhang,

Huang

et al. 2024

ACS Appl. Nano Mater.

Self Cite

View full text Add to dashboard Cite

Engineering heterojunction composite structures consisting of multiple nano active components formed from single element is broadly acknowledged as a robust method to boost the electrochemical performance of lithium-ion batteries (LIBs). Herein, a multidimensional composite structure consisting of SnO/SnO 2 heterojunction nanoparticles and reduced graphene oxide nanosheets (SnO/SnO 2 @G) is proposed. The extensive empirical characterization and density functional theory (DFT) calculations validate the plentiful heterogeneous interfaces and resilient lithium storage mechanism exhibited by the SnO/SnO 2 heterostructures. These attributes are closely associated with the rapid diffusion kinetics of Li + within the space charge region and the presence of multiple-ion channels. On the other hand, the Sn− O−C bond is anchored on graphene sheets, enhancing SnO/SnO 2 heterostructure stability and preventing unavoidable aggregation and slow charge transfer. As anticipated, the better specific capacity, rate performance, and cycling stability (498.69 mAh g −1 at 1.0 A g −1 after 400 cycles) are acquired in the LIBs composed of a SnO/SnO 2 @G anode. This work provides a feasible approach for improving the performance of LIBs by constructing single-element heterostructures.

show abstract

One-step hydrothermal synthesis of Cu doped SnS2 quantum dots anchored on reduced graphene oxide (rGO) as high-performance electrodes for supercapacitors

Wang,

Chen,

Yao

et al. 2024

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Homogeneous integration of SnS2 quantum dots with S, N-codoped layered graphene for robust lithium storage performance

Cited by 5 publications

References 70 publications

Covalent Bond Hybrid Nanostructure of N-doped rGO and Ultrathin SnS₂ with High Porosity for Lithium-Ion Batteries

Covalent Bond Hybrid Nanostructure of N-doped rGO and Ultrathin SnS₂ with High Porosity for Lithium-Ion Batteries

SnO/SnO₂ Heterojunction Nanoparticles Anchored on Graphene Nanosheets for Lithium Storage

One-step hydrothermal synthesis of Cu doped SnS2 quantum dots anchored on reduced graphene oxide (rGO) as high-performance electrodes for supercapacitors

Contact Info

Product

Resources

About

Homogeneous integration of SnS2 quantum dots with S, N-codoped layered graphene for robust lithium storage performance

Cited by 5 publications

References 70 publications

Covalent Bond Hybrid Nanostructure of N-doped rGO and Ultrathin SnS2 with High Porosity for Lithium-Ion Batteries

Covalent Bond Hybrid Nanostructure of N-doped rGO and Ultrathin SnS2 with High Porosity for Lithium-Ion Batteries

SnO/SnO2 Heterojunction Nanoparticles Anchored on Graphene Nanosheets for Lithium Storage

One-step hydrothermal synthesis of Cu doped SnS2 quantum dots anchored on reduced graphene oxide (rGO) as high-performance electrodes for supercapacitors

Contact Info

Product

Resources

About

Covalent Bond Hybrid Nanostructure of N-doped rGO and Ultrathin SnS₂ with High Porosity for Lithium-Ion Batteries

Covalent Bond Hybrid Nanostructure of N-doped rGO and Ultrathin SnS₂ with High Porosity for Lithium-Ion Batteries

SnO/SnO₂ Heterojunction Nanoparticles Anchored on Graphene Nanosheets for Lithium Storage