MOF-derived Co9S8/C hollow polyhedra grown on 3D graphene aerogel as efficient polysulfide mediator for long-life Li-S batteries

Zhang, Huan; Ma, Jun; Huang, Meiling; Shang, Huimin; Jiang, Jin-Wu; Qiao, Yingjun; Liu, Wenjing; Zhou, Hanxiao; Li, Tianhui; Zhou, Xuemei; Peng, Gongchang; Ye, Meidan; Qu, Meizhen

doi:10.1016/j.matlet.2020.128331

Cited by 19 publications

(6 citation statements)

References 9 publications

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“…Generally, the Ti 3 C 2 T x /CNTs-Co 9 S 8 /S cathode shows better electrochemical performance than that of the Ti 3 C 2 T x /S cathode and other MXene-and Co 9 S 8 -based cathodes. 25,26,[53][54][55][56][57] Fig. 6d shows the long-term cycling performance with a high S loading of 2.5 mg cm −2 at 0.5C.…”

Section: Resultsmentioning

confidence: 99%

Rationally designing a Ti₃C₂T_x/CNTs-Co₉S₈ heterostructure as a sulfur host with multi-functionality for high-performance lithium–sulfur batteries

Xiao

Zhang

et al. 2022

Nanoscale

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Section: Resultsmentioning

confidence: 99%

Rationally designing a Ti₃C₂T_x/CNTs-Co₉S₈ heterostructure as a sulfur host with multi-functionality for high-performance lithium–sulfur batteries

Xiao

Zhang

et al. 2022

Nanoscale

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“…Figure b–f reveals the elemental composition, valence, and surface characteristics of Co, Sn, S, C, and N in the CoS 2 /SnS 2 @CNFs heterojunction materials. Figure f shows the high-resolution XPS pattern of N 1s, from which four types of N species can be seen, namely, pyridine nitrogen (398.2 eV), pyrrole nitrogen (399.2 eV), graphitic nitrogen (400.3 and 401.3 eV), and nitrogen oxides (402.3 and 404.2 eV), and the high nitrogen content can be attributed to the pyrolysis of the PANs, which improves the material’s catalytic activity. , The peaks in the C 1s spectra in Figure e of 284.9, 286.1, and 288.9 eV correlate with C=C, C–N, and C=N bonds, respectively, and these results confirm that PAN-derived N atoms are doped into the CNFs. In addition, the XPS maps of Co 2p, Sn 3d, and S 2p before and after adsorption of Li 2 S 6 were comparatively analyzed.…”

Section: Resultsmentioning

confidence: 99%

N-Doped Carbon Fiber-Encapsulated CoS₂/SnS₂ Heterostructures Facilitate Polysulfide Conversion for Lithium–Sulfur Batteries

Jin,

Liu,

Hong

et al. 2024

J. Phys. Chem. C

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Heterojunction structures as an advanced strategy may promote the synergistic effect of different component materials; the rational design of heterojunctions allows them to exhibit various advantages when applied to lithium–sulfur batteries. Hollow CoSn(OH)6 was used as a precursor, and polyacrylonitrile PAN and sulfur powder were used as raw materials. N-doped carbon nanofiber-encapsulated CoS2/SnS2 heterostructured materials CoS2/SnS2@CNFs were prepared by an electrostatic spinning technique and in situ vulcanization and applied to the lithium–sulfur battery cathode. A hollow cubic material with structural stability and a physical domain-limiting effect, that is, the CoS2/SnS2 heterostructure, was effectively constructed, and rapid charge transfer was realized by a built-in electric field induced to form by the heterogeneous interface. Meanwhile, the fiber-like network structure facilitates the wetting of the electrolyte and shortens the ion transfer path. The results show that a CoS2/SnS2@CNFs@S-based battery exhibits an excellent electrochemical performance. The initial discharge specific capacities were 1204.3 mAh g–1 at a current density of 0.1 C and 615.2 mAh g–1 at 4 C. The long-cycle performance showed that the cells only exhibited an ultralow decay rate of 0.067% per week on average after 1000 cycles at 2C. When the sulfur loading was increased to 5.3 mg cm–2 and the electrolyte/sulfur ratio was 6 μL mg–1, excellent cycling stability was still demonstrated after 250 weeks of cycling at 0.2C.

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“…The conductive structure of CNT and nitrogen-doped porous carbon enhanced electron conduction, Li + migration, and electrolyte infiltration on the cathode surface. The ZIF-67-derived Co 9 S 8 /C hollow polyhedra were synthesized on 3D graphene aerogel (3D GA) to form Co 9 S 8 /C/GA/S . The porous and conductive properties of 3D GA frameworks fully encapsulated sulfur and inhibited volume expansion.…”

Section: Metal–organic Framework (Mofs)-based Sulfur Cathode Material...mentioning

confidence: 99%

“…The ZIF-67derived Co 9 S 8 /C hollow polyhedra were synthesized on 3D graphene aerogel (3D GA) to form Co 9 S 8 /C/GA/S. 83 The porous and conductive properties of 3D GA frameworks fully encapsulated sulfur and inhibited volume expansion. Polar Co 9 S 8 /C strongly chemically adsorbed LiPSs and inhibited the shuttle effect.…”

Section: Metal−organic Framework (Mofs)-based Sulfur Cathode Material...mentioning

confidence: 99%

Recent Breakthroughs in the Bottleneck of Cathode Materials for Li–S Batteries

Chai

et al. 2021

Energy Fuels

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The advantages of high theoretical specific capacity, low cost, and convenient processing of lithium–sulfur batteries (Li–S batteries) have promoted a new direction for the development of the battery industry and greatly increased the upper limit of application of energy storage materials. However, the volume expansion, shuttle effect, and weak conductivity of sulfur inhibit the development prospect of Li–S batteries. Herein, the latest research developments of sulfur composite cathode materials in Li–S batteries are reviewed, including but not limited to carbon-based materials, metal and metal compound materials, metal–organic frameworks and derivatives, and conductive polymers. The electrochemical performance of Li–S batteries can be greatly improved through modifying sulfur composite cathodes based on the characteristics of composite materials and the bottleneck of Li–S batteries. In addition, the modification and application of the existing anode materials of Li–S batteries are summarized, which provides the possibility to promote the further development of Li–S batteries.

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MOF-derived Co9S8/C hollow polyhedra grown on 3D graphene aerogel as efficient polysulfide mediator for long-life Li-S batteries

Cited by 19 publications

References 9 publications

Rationally designing a Ti₃C₂T_x/CNTs-Co₉S₈ heterostructure as a sulfur host with multi-functionality for high-performance lithium–sulfur batteries

Rationally designing a Ti₃C₂T_x/CNTs-Co₉S₈ heterostructure as a sulfur host with multi-functionality for high-performance lithium–sulfur batteries

N-Doped Carbon Fiber-Encapsulated CoS₂/SnS₂ Heterostructures Facilitate Polysulfide Conversion for Lithium–Sulfur Batteries

Recent Breakthroughs in the Bottleneck of Cathode Materials for Li–S Batteries

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MOF-derived Co9S8/C hollow polyhedra grown on 3D graphene aerogel as efficient polysulfide mediator for long-life Li-S batteries

Cited by 19 publications

References 9 publications

Rationally designing a Ti3C2Tx/CNTs-Co9S8 heterostructure as a sulfur host with multi-functionality for high-performance lithium–sulfur batteries

Rationally designing a Ti3C2Tx/CNTs-Co9S8 heterostructure as a sulfur host with multi-functionality for high-performance lithium–sulfur batteries

N-Doped Carbon Fiber-Encapsulated CoS2/SnS2 Heterostructures Facilitate Polysulfide Conversion for Lithium–Sulfur Batteries

Recent Breakthroughs in the Bottleneck of Cathode Materials for Li–S Batteries

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Rationally designing a Ti₃C₂T_x/CNTs-Co₉S₈ heterostructure as a sulfur host with multi-functionality for high-performance lithium–sulfur batteries

Rationally designing a Ti₃C₂T_x/CNTs-Co₉S₈ heterostructure as a sulfur host with multi-functionality for high-performance lithium–sulfur batteries

N-Doped Carbon Fiber-Encapsulated CoS₂/SnS₂ Heterostructures Facilitate Polysulfide Conversion for Lithium–Sulfur Batteries