Cerium oxide embedded bilayer separator enabling fast polysulfide conversion for high-performance lithium-sulfur batteries

Zhang, Jiawen; Rao, Qingqing; Jin, Biyu; Lu, Jianguo; He, Qinggang; Hou, Yang; Li, Zhou Peng; Zhan, Xiaoli; Chen, Fengqiu; Zhang, Qinghua

doi:10.1016/j.cej.2020.124120

Cited by 62 publications

(36 citation statements)

References 48 publications

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“…The coefficients for peaks 1, 2, and 3 are 1.52 × 10 −9 , 1.29 × 10 −9 , and 8.98 × 10 −10 cm 2 s −1 , respectively, which indicate the CNTs/QDs/S microcapsules exhibit a good diffusivity for Li + ions. [54,55] Figure 3e shows the capacity and CE of the porous CNTs/ QDs/S microcapsules cycling under different temperatures of −5 and 45 °C at 0.1 C. At a relatively high temperature, even though the initial capacity is as high as 1222 mAh g −1 , during cycling the capacity decays obviously. At a high temperature, the activity of electrochemical materials is high, [56] however, the capacity decays rapidly because of the degradation of electrolyte.…”

Section: Resultsmentioning

confidence: 99%

A Polysulfides‐Confined All‐in‐One Porous Microcapsule Lithium–Sulfur Battery Cathode

Liu

Zhu

Shen

et al. 2021

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Developing emerging materials for high energy‐density lithium–sulfur (Li–S) batteries is of great significance to suppress the shuttle effect of polysulfides and to accommodate the volumetric change of sulfur. Here, a novel porous microcapsule system containing a carbon nanotubes/tin dioxide quantum dots/S (CNTs/QDs/S) composite core and a porous shell prepared through a liquid‐driven coaxial microfluidic method as Li–S battery cathode is developed. The encapsulated CNTs in the microcapsules provide pathways for electron transport; SnO2 QDs on CNTs immobilize the polysulfides by strong adsorption, which is verified by using density functional theory calculations on binding energies. The porous shell of the microcapsule is beneficial for ion diffusion and electrolyte penetration. The void inside the microcapsule accommodates the volumetric change of sulfur. The Li–S battery based on the porous CNTs/QDs/S microcapsules displays a high capacity of 1025 mAh g−1 after 100 cycles at 0.1 C. When the sulfur loading is 2.03 mg cm−2, the battery shows a stable cycling life of 700 cycles, a Coulombic efficiency exceeding 99.9%, a recoverable rate‐performance during repeated tests, and a good temperature tolerance at both −5 and 45 °C, which indicates a potential for applications at different conditions.

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Section: Resultsmentioning

confidence: 99%

A Polysulfides‐Confined All‐in‐One Porous Microcapsule Lithium–Sulfur Battery Cathode

Liu

Zhu

Shen

et al. 2021

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“…Similarly, some other polar metal compounds with the same ability have also been reported (e.g. TiO 2 [157], Ti 4 O 7 [158], CeO 2 [159], ZrO 2 [160], MnS [161]), all of which can be distributed on/in CENFs in the form of nanoparticles.…”

Section: Lsbs Performancementioning

confidence: 67%

Carbon-containing electrospun nanofibers for lithium–sulfur battery: Current status and future directions

Tong

Huang

Lei

et al. 2021

Journal of Energy Chemistry

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“…However, there are plenty of factors that limit their extensive development—their poor wettability and absorbability in liquid electrolytes, causing low conductivity and high impedance of Li ions in liquid electrolyte. In addition, the polyolefin separator has poor thermal stability, which will cause short circuiting and even explosion of the battery, a significant safety hazard 103‐105 . In order to overcome the deficiencies of traditional polyolefin multiple approaches have been suggested including novel membrane design, the introduction of a multilayer functional membrane, or modification of the microporous polyolefin membrane.…”

Section: Strategiesmentioning

confidence: 99%

Strategies to anode protection in lithium metal battery: A review

Zhao

Liu

et al. 2021

InfoMat

178

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Lithium metal batteries (LMBs) are considered the most promising energy storage devices for applications such as electrical vehicles owing to its tremendous theoretical capacity (3860 mAh g−1). However, the serious safety issues and poor cycling performance caused by the dendritic crystal growth during deposition are concerned for any rechargeable batteries with a lithium metal anode. To make widespread adoption a possibility, considerable efforts have been devoted to suppressing lithium (Li) dendrite growth. In this review, the recent strategies to developing dendrite free Li anode, including constructing an artificial solid electrolyte interface, current collector modification, separator film improvement, and electrolyte additive, are summarized. The merits and shortcomings for different strategies are reviewed and a general summary and perspective on the next generation rechargeable batteries are presented.

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Cerium oxide embedded bilayer separator enabling fast polysulfide conversion for high-performance lithium-sulfur batteries

Cited by 62 publications

References 48 publications

A Polysulfides‐Confined All‐in‐One Porous Microcapsule Lithium–Sulfur Battery Cathode

A Polysulfides‐Confined All‐in‐One Porous Microcapsule Lithium–Sulfur Battery Cathode

Carbon-containing electrospun nanofibers for lithium–sulfur battery: Current status and future directions

Strategies to anode protection in lithium metal battery: A review

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