Ni/SiO2/Graphene-modified separator as a multifunctional polysulfide barrier for advanced lithium-sulfur batteries

Chen, Chao; Jiang, Qingbin; Xu, Huifang; Zhang, Yaping; Zhang, Bingkai; Zhang, Zhenyu; Lin, Zhan; Zhang, Shanqing

doi:10.1016/j.nanoen.2020.105033

Cited by 99 publications

(49 citation statements)

References 41 publications

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“…Moreover, it could also harvest a high specific capacity of 320.0 mAh g À 1 with the distinct voltage platforms even at a high C rate of 8.0, which is comparable to many reported literatures (Figure and Table S1). [51][52][53][54][55][56][57][58][59][60] This superior rate performance is ascribed to the accelerated kinetic conversion of intermediates and the strong affinity with LiPS due to the G@MC modified layer in a working LiÀ S battery (Figure S14). The specific capacity of the battery could also be recovered to 1106.6 mAh g À 1 , when the C rate switched backed to low current of 0.1 C. Its capacity retention is much higher in comparison with the cased of the batteries with pristine and commercial MnCO 3 modified separator, respectively (Figure S11 and S12).…”

Section: Resultsmentioning

confidence: 99%

“…With the chemical deposition of LiPS, the corresponding Li element is also detected on the surface of G@MC layer due to the chemically redox reaction of intermediates (Figure 3d). Meanwhile, the positive Li + ions would simultaneously bond with the negative CO 3 2À ions because of the electrostatic interaction, providing the extra traps for anchoring polysulfides [51][52][53][54][55][56][57][58][59] and mitigating their shuttle in electrolyte. Moreover, it is worth noting that the additional characteristic peaks located at 162.5 and 163.5 eV of S element correspond to the conversion reaction from long-chain to short-chain LiPS on the active surface of G@MC layer (Figure 3e).…”

Section: Resultsmentioning

confidence: 99%

“…The electrochemical performance of LiÀ S batteries with the G@MC modified separator. a) CV curves; b) Charge-discharge profiles; c) Cycling performance; d) Comparison with reported literatures [51][52][53][54][55][56][57][58][59].…”

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confidence: 86%

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Engineering Functional Interface with Built‐in Catalytic and Self‐Oxidation Sites for Highly Stable Lithium–Sulfur Batteries

Chen

Miao

et al. 2021

Chemistry A European J

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Lithium−sulfur (Li−S) batteries have attracted great attention due to their high theoretical energy density. The rapid redox conversion of lithium polysulfides (LiPS) is effective for solving the serious shuttle effect and improving the utilization of active materials. The functional design of the separator interface with fast charge transfer and active catalytic sites is desirable for accelerating the conversion of intermediates. Herein, a graphene‐wrapped MnCO3 nanowire (G@MC) was prepared and utilized to engineer the separator interface. G@MC with active Mn2+ sites can effectively anchor the LiPS by forming the Mn−S chemical bond according to our theoretical calculation results. In addition, the catalytic Mn2+ sites and conductive graphene layer of G@MC could accelerate the reversible conversion of LiPS via the spontaneous “self‐redox” reaction and the rapid electron transfer in electrochemical process. As a result, the G@MC‐based battery exhibits only 0.038 % capacity decay (per cycle) after 1000 cycles at 2.0 C. This work affords new insights for designing the integrated functional interface for stable Li−S batteries.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Engineering Functional Interface with Built‐in Catalytic and Self‐Oxidation Sites for Highly Stable Lithium–Sulfur Batteries

Chen

Miao

et al. 2021

Chemistry A European J

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“…[7] Recently,s ome metal nanoparticles,s uch as Co,a nd Ni nanoparticles,h ave recently attracted enormous attentions for electrocatalytic processes owing to their strong sulfiphilic interactions with LiPS. [8] As atypical example,Huang and coworkers utilized Co nanoparticles-decorated carbon polyhedron, as as ulfur-host material, which provide abundant active sites to improve the redox reaction of polysulfides conversion, thus simultaneously boosting battery performance. [9] From ac atalysis-design perspective,t he activity of metal catalysts could exponentially grow with decreasing particle size.…”

Section: Introductionmentioning

confidence: 99%

Engineering Oversaturated Fe‐N₅ Multifunctional Catalytic Sites for Durable Lithium‐Sulfur Batteries

et al. 2021

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Lithium‐sulfur (Li‐S) batteries are regarded as a promising next‐generation system for advanced energy storage owing to a high theoretical energy density of 2600 Wh kg−1. However, the practical implementation of Li‐S batteries has been thwarted by the detrimental shuttling behavior of polysulfides, and the sluggish kinetics in electrochemical processes. Herein, a novel single atom (SA) catalyst with oversaturated Fe‐N5 coordination structure (Fe‐N5‐C) is precisely synthesized by an absorption–pyrolysis strategy and introduced as an effective sulfur host material. The experimental characterizations and theoretical calculations reveal synergism between atomically dispersed Fe‐N5 active sites and the unique carbon support. The results exhibit that the sulfur composite cathode built on the Fe‐N5‐C can not only adsorb polysulfides via chemical interaction, but also boost the redox reaction kinetics, thus mitigating the shuttle effect. Meanwhile, the robust three‐dimensional nitrogen doped carbon nanofiber with large surface area, and high porosity enables strong physical confinement and fast electron/ion transfer process. Attributed to such unique features, Li‐S batteries with S/Fe‐N5‐C composite cathode realize outstanding cyclability and rate capability, as well as high areal capacities under raised sulfur loading, which demonstrates great potential in developing advanced Li‐S batteries.

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“…The TCS/ZnO is prepared by Gui et al and promoted limitation on LiPS was achieved [24]. However, the further research of metal oxide is hindered by the poor conductivity and the tendency to agglomerate during the preparation process [25][26][27][28][29][30][31]. Therefore, the metal oxide and the conductive carbon material can be combined to make a long complement.…”

Section: Introductionmentioning

confidence: 99%

3D Hollow rGO Microsphere Decorated with ZnO Nanoparticles as Efficient Sulfur Host for High-Performance Li-S Battery

Zhang

et al. 2020

Nanomaterials

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Lithium-sulfur battery (LSB) will become the next generation energy storage device if its severe shuttle effect and sluggish redox kinetics can be effectively addressed. Here, a unique three-dimensional hollow reduced graphene oxide microsphere decorated with ZnO nanoparticles (3D-ZnO/rGO) is synthesized to decrease the dissolution of lithium polysulfide (LiPS) into the electrolyte. The chemical adsorption of ZnO on LiPS is combined with the physical adsorption of 3D-rGO microsphere to synergistically suppress the shuttle effect. The obtained 3D-ZnO/rGO can provide sufficient space for sulfur storage, and effectively alleviate the repeated volume changes of sulfur during the cycle. When the prepared S-3D-ZnO/rGO was used as the cathode in LSB, an initial discharge specific capacity of 1277 mAh g−1 was achieved at 0.1 C. After 100 cycles, 949 mAh g−1 can still be maintained. Even at 1 C, a reversible discharge specific capacity of 726 mAh g−1 was delivered.

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Ni/SiO2/Graphene-modified separator as a multifunctional polysulfide barrier for advanced lithium-sulfur batteries

Cited by 99 publications

References 41 publications

Engineering Functional Interface with Built‐in Catalytic and Self‐Oxidation Sites for Highly Stable Lithium–Sulfur Batteries

Engineering Functional Interface with Built‐in Catalytic and Self‐Oxidation Sites for Highly Stable Lithium–Sulfur Batteries

Engineering Oversaturated Fe‐N₅ Multifunctional Catalytic Sites for Durable Lithium‐Sulfur Batteries

3D Hollow rGO Microsphere Decorated with ZnO Nanoparticles as Efficient Sulfur Host for High-Performance Li-S Battery

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Ni/SiO2/Graphene-modified separator as a multifunctional polysulfide barrier for advanced lithium-sulfur batteries

Cited by 99 publications

References 41 publications

Engineering Functional Interface with Built‐in Catalytic and Self‐Oxidation Sites for Highly Stable Lithium–Sulfur Batteries

Engineering Functional Interface with Built‐in Catalytic and Self‐Oxidation Sites for Highly Stable Lithium–Sulfur Batteries

Engineering Oversaturated Fe‐N5 Multifunctional Catalytic Sites for Durable Lithium‐Sulfur Batteries

3D Hollow rGO Microsphere Decorated with ZnO Nanoparticles as Efficient Sulfur Host for High-Performance Li-S Battery

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Engineering Oversaturated Fe‐N₅ Multifunctional Catalytic Sites for Durable Lithium‐Sulfur Batteries