Metallic and polar Co 9 S 8 inlaid carbon hollow nanopolyhedra as efficient polysulfide mediator for lithium−sulfur batteries

Chen, Tao; Ma, Lianbo; Cheng, Baorui; Chen, Renpeng; Hu, Yi; Zhu, Guoyin; Wang, Yanrong; Liang, Jia; Tie, Zuoxiu; Liu, Jie; Jin, Zhong

doi:10.1016/j.nanoen.2017.05.064

Cited by 321 publications

(170 citation statements)

References 56 publications

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“…The electrode could still deliver a reversible capacity of 800 mAh g −1 (4.0 mAh cm −2 ) after 50 cycles, indicating outstanding cycling stability even with such a high sulfur loading. [32,[48][49][50][51] The excellent cycling performance of the high loading electrodes marks the integrated advances of the high conductivity, accelerated polysulfide redox kinetics, as well as effective polysulfide chemical confinement of the G-VS 2 sulfur hosts. As shown in Figure 6c, G-VS 2 with different sulfur loadings has been examined by cycling at 1 C. After 150 cycles, a reversible capacity of 923, 559, and 520 mAh g −1 is retained with sulfur loadings of 1.0, 2.0, and 3.5 mg cm −2 , corresponding to capacity retentions of 72.7%, 71.1%, and 74.2%, respectively.…”

Section: Doi: 101002/aenm201800201mentioning

confidence: 99%

In Situ Assembly of 2D Conductive Vanadium Disulfide with Graphene as a High‐Sulfur‐Loading Host for Lithium–Sulfur Batteries

Zhu

Zhao

Song

et al. 2018

Advanced Energy Materials

209

134

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The ever-growing demand for high-energy and long-life energy storage devices has spurred extensive research beyond conventional lithium-ion battery systems. Amongst these, rechargeable lithium-sulfur (Li-S) batteries, as a promising next-generation energy storage technology, have captured vast interest because of the high capacity (1672 mAh g −1 ), large abundance of sulfur, and environmental compatibility. [1][2][3][4] Although there has been significant advance by far in designing state-of-theart Li-S batteries, their practical utilization and large-scale commercialization are still impeded by a multitude of technological obstacles, namely, i) the insulating nature of S/Li 2 S that would jeopardize the overall conductivity of the electrode and hence affect the utilization of sulfur; ii) the shuttle effect induced by the dissolution and diffusion of lithium polysulfide that could lead to a rapid capacity fading; and iii) the considerable volume expansion of the sulfur cathode upon cycling. [5,6] To tackle these issues, great efforts have been devoted to developing appropriate host materials in combination with optimizing the cathode architectures toward advanced Li-S batteries. A ubiquitously employed strategy is to encapsulate sulfur and/or polysulfides with the aid of porous carbonaceous materials, such as carbon nanotubes, [1,[7][8][9][10] hollow carbon spheres, [11,12] and graphene, [13][14][15] aiming to attain enhanced electrode conductivity, improved sulfur utilization, and buffered volume change. However, this has been proved to be far from ideal, owing to weak van der Waals (vdW) interaction between nonpolar carbon and polar polysulfide species that only gives rise to a physical confinement, insufficient to alleviate the polysulfide shuttle over a long lifespan. In this regard, the introduction of polar nanomaterials (e.g., transition metal oxides, [16][17][18] sulfides, [19][20][21] and nitrides [22,23] ) within the sulfur host has witnessed an efficient suppression of shuttle effect, where polysulfides are chemically anchored onto these polar species. Nevertheless, the limited electrical conductivity of most metal oxides/sulfides would otherwise result in sluggish kinetics of polysulfide redox reactions, inevitably causing poor rate capability and fast capacity decay. Latest investigations have revealed that the integration of polar nanocrystals/nanosheets Lithium-sulfur (Li-S) batteries are deemed to be one of the most promising energy storage technologies because of their high energy density, low cost, and environmental benignancy. However, existing drawbacks including the shuttling of intermediate polysulfides, the insulating nature of sulfur, and the considerable volume change of sulfur cathode would otherwise result in the capacity fading and unstable cycling. To overcome these challenges, herein an in situ assembly route is presented to fabricate VS 2 /reduced graphene oxide nanosheets (G-VS 2 ) as a sulfur host. Benefiting from the 2D conductive and polar VS 2 interlayered within a graphene fra...

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Section: Doi: 101002/aenm201800201mentioning

confidence: 99%

In Situ Assembly of 2D Conductive Vanadium Disulfide with Graphene as a High‐Sulfur‐Loading Host for Lithium–Sulfur Batteries

Zhu

Zhao

Song

et al. 2018

Advanced Energy Materials

209

134

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“…This strategy shows its enormous potential in large‐scale fabrication. Additionally, some solid synthetic materials, such as metal organic frameworks (MOFs) and zeolitic imidazolate frameworks (ZIFs), can be converted into hollow porous carbonaceous particles by controlling the carbonization process, greatly enriching the family of self‐templating products . In recent years, a growing number of self‐templating HPCM have been applied in Li–S batteries.…”

Section: Synthesis Of Hollow Porous Carbon Materialsmentioning

confidence: 99%

“…In contrast, the capacities of the HPCS/S composite under the same test conditions were 302 and 387 mAh g −1 , respectively. To simplify the synthesis procedures, Jin and co‐workers developed a self‐templating method using ZIF‐67 as both carbon and polar inorganic nanoparticle precursors (Figure b) . Simply by annealing the thioacetamide‐treated ZIF‐67 particles at 350 °C in N 2 atmosphere, N‐doped hollow porous carbon particles embedded with metallic and polar Co 9 S 8 nanoparticles (N‐HPCP/Co 9 S 8 ) were synthesized as an efficient sulfur host.…”

Section: Sulfur Cathodes Based On Hollow Porous Carbon Materialsmentioning

confidence: 99%

Recent Advances in Hollow Porous Carbon Materials for Lithium–Sulfur Batteries

Wang

Pei

et al. 2019

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184

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Lithium–sulfur (Li–S) batteries are considered as one of the most potential next‐generation rechargeable batteries due to their high theoretical energy density. However, some critical issues, such as low capacity, poor cycling stability, and safety concerns, must be solved before Li–S batteries can be used practically. During the past decade, tremendous efforts have been devoted to the design and synthesis of electrode materials. Benefiting from their tunable structural parameters, hollow porous carbon materials (HPCM) remarkably enhance the performances of both sulfur cathodes and lithium anodes, promoting the development of high‐performance Li–S batteries. Here, together with the templated synthesis of HPCM, recent progresses of Li–S batteries based on HPCM are reviewed. Several important issues in Li–S batteries, including sulfur loading, polysulfide entrapping, and Li metal protection, are discussed, followed by a summary on recent research on HPCM‐based sulfur cathodes, modified separators, and lithium anodes. After the discussion on emerging technical obstacles toward high‐energy Li–S batteries, prospects for the future directions of HPCM research in the field of Li–S batteries are also proposed.

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“…Lithium/sulfur cells have attracted much attention due to their high theoretical capacity of 1675 mAh g −1 and low cost. However, the practical applications are hampered by some challenges, such as severe capacity degradation and low charging efficiency . These can be attributed to (a) poor electronic conductivity, (b) intermediate polysulfide dissolution causing shuttle effect, and (c) large volumetric expansion (∼79 %) upon lithiation .…”

Section: Introductionmentioning

confidence: 99%

GO Wrapping Yolk‐Shell S/MnO₂ Nanocomposites as High Performance Cathode for Lithium/Sulfur Cells

et al. 2018

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The lithium/sulfur cell with high theoretical capacity has drawn much attention recently because of its high energy density and low cost. However, the shuttle effect caused by polysulfide dissolution and migration, and the destruction of cathode particles due to large volume expansion during lithiation, are the key challenges. Here, the novel graphene oxide (GO) wrapping sulfur‐MnO2 (S/MnO2/GO) nanocomposite is prepared with improved rate capability and cyclic performance. The inner layer is the protective layer of MnO2 shell, which accommodates the volume expansion of sulfur and minimizes polysulfides dissolution. The outer layer of fabricated graphene oxide is the stable layer, which gives further protection in suppressing the polysulfides dissolution in case the MnO2 shells crack. The cell with S/MnO2/GO electrode delivers 1378 mAh g−1 initial discharge capacity at the current density of 2 C and remains 818 mAh g−1 over 1000 cycles, which exhibits the very low fading rate of 0.04 % per cycle. Moreover, the S/MnO2/GO nanocomposites can be easily fabricated with our method.

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Metallic and polar Co 9 S 8 inlaid carbon hollow nanopolyhedra as efficient polysulfide mediator for lithium−sulfur batteries

Cited by 321 publications

References 56 publications

In Situ Assembly of 2D Conductive Vanadium Disulfide with Graphene as a High‐Sulfur‐Loading Host for Lithium–Sulfur Batteries

In Situ Assembly of 2D Conductive Vanadium Disulfide with Graphene as a High‐Sulfur‐Loading Host for Lithium–Sulfur Batteries

Recent Advances in Hollow Porous Carbon Materials for Lithium–Sulfur Batteries

GO Wrapping Yolk‐Shell S/MnO₂ Nanocomposites as High Performance Cathode for Lithium/Sulfur Cells

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Metallic and polar Co 9 S 8 inlaid carbon hollow nanopolyhedra as efficient polysulfide mediator for lithium−sulfur batteries

Cited by 321 publications

References 56 publications

In Situ Assembly of 2D Conductive Vanadium Disulfide with Graphene as a High‐Sulfur‐Loading Host for Lithium–Sulfur Batteries

In Situ Assembly of 2D Conductive Vanadium Disulfide with Graphene as a High‐Sulfur‐Loading Host for Lithium–Sulfur Batteries

Recent Advances in Hollow Porous Carbon Materials for Lithium–Sulfur Batteries

GO Wrapping Yolk‐Shell S/MnO2 Nanocomposites as High Performance Cathode for Lithium/Sulfur Cells

Contact Info

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Resources

About

GO Wrapping Yolk‐Shell S/MnO₂ Nanocomposites as High Performance Cathode for Lithium/Sulfur Cells