A “boxes in fibers” strategy to construct a necklace-like conductive network for high-rate and high-loading lithium–sulfur batteries

Zhou, Shiyuan; Liu, Jiapeng; Xie, Fanxuan; Zhao, Yinghao; Mei, Tao; Wang, Zhengbang; Wang, Xiaochang C.

doi:10.1039/d0ta04089d

Cited by 26 publications

(16 citation statements)

References 57 publications

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“…For addressing the issues above, promising sulfur hosts have been designed to construct advanced LSBs. − Because of possessing nanopores, the conductive carbon host such as the carbon nanotube, , the carbon nanorod, , carbon spheres, and graphene , can physically restrict LPSs from escaping to the electrolyte. However, the stability of these carbon-based sulfur electrodes decays obviously during long-term cycling, mainly resulting from friable interactions between polar LPSs and nonpolar carbon. − Therefore, various polar materials such as metal oxides, − metal sulfides, − metal nitrides, metal carbides, , and heteroatoms ,, have been introduced into carbon materials to overcome the mentioned problems and improve the cycling stability based on their strong interaction with LPSs. Thus, combining the anchoring effects of these polar materials and the conductivity of carbon materials, the polysulfides can be fixed and reduced efficiently, resulting in high sulfur utilization.…”

Section: Introductionmentioning

confidence: 99%

“…However, the stability of these carbon-based sulfur electrodes decays obviously during longterm cycling, mainly resulting from friable interactions between polar LPSs and nonpolar carbon. 23−25 Therefore, various polar materials such as metal oxides, 26−32 metal sulfides, 33−39 metal nitrides, 40 metal carbides, 41,42 and heteroatoms 3,43,44 have been introduced into carbon materials to overcome the mentioned problems and improve the cycling stability based on their strong interaction with LPSs. Thus, combining the anchoring effects of these polar materials and the conductivity of carbon materials, the polysulfides can be fixed and reduced efficiently, resulting in high sulfur utilization.…”

Section: Introductionmentioning

confidence: 99%

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Reasonably Introduced ZnIn₂S₄@C to Mediate Polysulfide Redox for Long-Life Lithium–Sulfur Batteries

Zhang

Luo

Zhou

et al. 2021

ACS Appl. Mater. Interfaces

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In consideration of the inferior rate performance and low sulfur utilization of lithium–sulfur batteries (LSBs), an effective strategy via combining polar materials with the conductive carbon sulfur host is widely applied. Herein, metal organic framework-derived in situ-developed ZnIn2S4@C is innovatively synthesized to mediate lithium polysulfide (LPS) conversion based on high electron conductivity and strong chemical interactions for advanced LSBs. Polar ZnIn2S4 possesses strong chemisorption in keeping with the DFT calculation results and catalytic for LPSs, ensuring a high sulfur utilization. Meanwhile, the hollow non-polar carbon frame possessing hierarchical pores not only provides internal space to contain active species but also accommodates efficient electronic transferring and diffusion of lithium ions in the process of cycling. The above advantages make the electrode possess promising stability and good rate performances, achieving long-term and high-rate cycling. Thus, under a sulfur loading of 1.5 mg cm–2, after 500 cycles, at 2 and 5 C, the as-prepared ZnIn2S4@C@S delivers reversible capacities of 734 mA h g–1 (75.7% of the initial capacity with a dropping rate of 0.015% per cycle) and 504 mA h g–1 (68.5% of the primal capacity with a dropping rate of 0.029% per cycle), respectively. Even at a high sulfur loading of 5.0 mg cm–2, at 5 C, 65.6% of the initial capacity can be maintained with a low fading rate of 0.430% per cycle after 500 loops with a high Coulombic efficiency of around 99.8%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reasonably Introduced ZnIn₂S₄@C to Mediate Polysulfide Redox for Long-Life Lithium–Sulfur Batteries

Zhang

Luo

Zhou

et al. 2021

ACS Appl. Mater. Interfaces

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“…19 Besides, to achieve a better adsorbing effect, polar additives would be a good choice. Most recently, Wang et al 20 reported a "boxes in fibers" strategy by using hollow carbon nanoboxes and TiC nanoparticles as the sulfur host, which could exhibit excellent rate performance. Yang et al 21 also reported a twinborn TiO 2 −TiN heterostructure to achieve high trapping efficiency of polysulfides by chemical binding, which is also demonstrated by theoretical calculation.…”

Section: Introductionmentioning

confidence: 99%

Renewable Polysulfide Regulation by Versatile Films toward High-Loading Lithium–Sulfur Batteries

Wang

Shen

Xia

et al. 2020

ACS Appl. Mater. Interfaces

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The development of a high specific energy lithium–sulfur battery is heavily hindered by the so-called “shuttle effect”. Nevertheless, as an effective strategy, most modified separators cannot block and reuse polysulfides simultaneously. Here, a unique and versatile film fabricated by nitrogen and phosphorus co-doped carbon nanofibers uniformly anchored with TiC nanoparticles is incorporated between the separator and cathode of the lithium–sulfur battery. The battery armed with this functional film exhibits a high capacity of 737.1 mA h g–1 at 5 C with a slow capacity-fading rate of 0.06%/cycle over 500 cycles. Even when augmenting the sulfur loading to 17.1 mg cm–2, it can achieve a capacity of 837.3 mA h g–1 with a retention of ∼80% after 50 cycles. The TiC nanoparticles as well as heteroatom doping in the porous carbon nanofiber exhibit strong physiochemical adsorption and catalytic effect, which is proven by experiments and theoretical calculations. Thus, the diffusion of polysulfides can be effectively inhibited. Meanwhile, heteroatom doping can further enhance the conductivity and reaction activity of this film. Hence, the adsorbed polysulfides could be revived and renewed during the subsequent cycling process, which is accurately observed and confirmed by experiments for the first time.

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“…Meanwhile, superior cycling stability over 400 cycles could also be achieved in the high sulfur loading of 5.0 mg cm −2 . Recently, Zhou et al [78] reported a similar templateengaged electrospinning strategy and constructed 3D conductive network composite (CNB-TiC@CNF) with a novel "boxes in fibers" structure. The cubic Fe 2 O 3 nanocubes served as a template and played a key role in building isolated hollow carbon nano boxes along the nanofibers.…”

Section: Composite Carbon Nanofibersmentioning

confidence: 99%

Lithium–Sulfur Batteries Meet Electrospinning: Recent Advances and the Key Parameters for High Gravimetric and Volume Energy Density

et al. 2021

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Lithium–sulfur (Li–S) batteries have been regarded as a promising next‐generation energy storage technology for their ultrahigh theoretical energy density compared with those of the traditional lithium‐ion batteries. However, the practical applications of Li–S batteries are still blocked by notorious problems such as the shuttle effect and the uncontrollable growth of lithium dendrites. Recently, the rapid development of electrospinning technology provides reliable methods in preparing flexible nanofibers materials and is widely applied to Li–S batteries serving as hosts, interlayers, and separators, which are considered as a promising strategy to achieve high energy density flexible Li–S batteries. In this review, a fundamental introduction of electrospinning technology and multifarious electrospinning‐based nanofibers used in flexible Li–S batteries are presented. More importantly, crucial parameters of specific capacity, electrolyte/sulfur (E/S) ratio, sulfur loading, and cathode tap density are emphasized based on the proposed mathematic model, in which the electrospinning‐based nanofibers are used as important components in Li–S batteries to achieve high gravimetric (WG) and volume (WV) energy density of 500 Wh kg−1 and 700 Wh L−1, respectively. These systematic summaries not only provide the principles in nanofiber‐based electrode design but also propose enlightening directions for the commercialized Li–S batteries with high WG and WV.

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A “boxes in fibers” strategy to construct a necklace-like conductive network for high-rate and high-loading lithium–sulfur batteries

Abstract: Following a “boxes in fibers” strategy, a 3D conductive network is constructed by necklace-like N-doped carbon nanofibers with carbon nanoboxes and TiC as an efficient sulfur host, showing excellent performance even under high-rate and high-loading.

Cited by 26 publications

References 57 publications

Reasonably Introduced ZnIn₂S₄@C to Mediate Polysulfide Redox for Long-Life Lithium–Sulfur Batteries

Reasonably Introduced ZnIn₂S₄@C to Mediate Polysulfide Redox for Long-Life Lithium–Sulfur Batteries

Renewable Polysulfide Regulation by Versatile Films toward High-Loading Lithium–Sulfur Batteries

Lithium–Sulfur Batteries Meet Electrospinning: Recent Advances and the Key Parameters for High Gravimetric and Volume Energy Density

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A “boxes in fibers” strategy to construct a necklace-like conductive network for high-rate and high-loading lithium–sulfur batteries

Abstract: Following a “boxes in fibers” strategy, a 3D conductive network is constructed by necklace-like N-doped carbon nanofibers with carbon nanoboxes and TiC as an efficient sulfur host, showing excellent performance even under high-rate and high-loading.

Cited by 26 publications

References 57 publications

Reasonably Introduced ZnIn2S4@C to Mediate Polysulfide Redox for Long-Life Lithium–Sulfur Batteries

Reasonably Introduced ZnIn2S4@C to Mediate Polysulfide Redox for Long-Life Lithium–Sulfur Batteries

Renewable Polysulfide Regulation by Versatile Films toward High-Loading Lithium–Sulfur Batteries

Lithium–Sulfur Batteries Meet Electrospinning: Recent Advances and the Key Parameters for High Gravimetric and Volume Energy Density

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Product

Resources

About

Reasonably Introduced ZnIn₂S₄@C to Mediate Polysulfide Redox for Long-Life Lithium–Sulfur Batteries

Reasonably Introduced ZnIn₂S₄@C to Mediate Polysulfide Redox for Long-Life Lithium–Sulfur Batteries