Porous carbonized graphene-embedded fungus film as an interlayer for superior Li–S batteries

Chai, Liyuan; Wang, Jiexi; Wang, Haiying; Zhang, Liyuan; Yu, Wanting; Mai, Liqiang

doi:10.1016/j.nanoen.2015.09.001

Cited by 131 publications

(62 citation statements)

References 51 publications

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“…And the BJH pore size distribution mainly concentrated in the 3 nm ( Figure 4b) is favorable for capture of sulfur and polysulfide. However, the sulfur evaporation temperatures of the xZnS-CA/S (x = 3, 6,9) composites are higher than that of the CA/S composite, which may be due to the strong adsorption of the ZnS to sulfur. 6ZnS-CA / S was formed by S loading and the pore volume and surface area of the sample were almost negligible, showing sulfur is almost full of all carbon holes.…”

Section: Resultsmentioning

confidence: 90%

“…Figure 9a exhibits the CV curve of the CA/S composite and it presents two distinct reduction peaks and one oxidation peak. It is clear that the values of reduction peak of xZnS-CA/S (x = 3, 6,9) are more positive than the potential of CA/S and indicate that ZnS significantly reduces electrode polarization. In the anodic scan, only one oxidation peak in the sample CA corresponds to the reverse conversion of Li 2 S 2 or Li 2 S to the polysulfide.…”

Section: Resultsmentioning

confidence: 98%

“…The specific surface areas of CA, 3ZnS-CA, 6ZnS-CA and 9ZnS-CA were obtained by the BET test and the values were 906, 823, 795 and 764 m 2 g À 1 , respectively. XPS in Figure 6 can elucidate the chemical composition and valence state of elements in the CA/S and xZnS-CA/S (x = 3, 6,9) composites. Figure 5 shows the contents of S of pure CA/S and xZnS-CA/ S (x = 3, 6, 9) by mean of thermogravimetric analysis (TGA).…”

Section: Resultsmentioning

confidence: 99%

“…The charge-discharge curves for the CA/S and xZnS-CA/S (x = 3, 6,9) composites cathodes at 0.2 C are shown in Figure 9b. Two discharge potential plateaus of sample CA/S were easily observed, being well consistent with the tests of CV results.…”

Section: Resultsmentioning

confidence: 99%

“…[2] Lithium-sulfur battery has an unparalleled energy density of 2600 Wh kg À 1 and sulfur cathode presents a high theoretical capacity of 1675 mAh g À 1 as a promising electrode material. [3] In addition, sulfur also has the advantage of lower cost, [4] abundant resources [5] and non-toxic, [6] so lithium-sulfur (LiÀ S) batteries will have a huge potential market in the near future. [7] However, LiÀ S batteries cannot fully meet the expectations of researchers and thus limit their application.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Active Anchoring Polysulfides of ZnS‐Decorated Porous Carbon Aerogel for a High‐Performance Lithium‐Sulfur Battery

Hua

Zhang

et al. 2019

ChemElectroChem

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A carbon aerogel composite modified with ZnS (ZnS-CA) was successfully prepared through a simple in situ synthesis and used as a cathode for lithium-sulfur batteries. The nanopore ZnS-CA composites with a high specific surface area and rich mesoporous structure exhibit stronger adsorption and immobilization ability for polysulfides. The ZnS-CA/S cathode materials offer excellent electrochemical performances with lasting cycling stability and high specific capacity. In particular, the 6ZnS-CA/S sample achieves an initial capacity of 1352 mAh g À 1 at 0.2 C and maintains a high capacity of 1119 mAh g À 1 after 100 cycles. Furthermore, after 300 long cycles, it still maintains a high capacity of 730 mAh g À 1 at 1 C. These excellent performance features are attributed to the strong affinity of ZnS for Li 2 S n species, thus polysulfide shuttling can be effectively inhibited from the cathode source. Furthermore, the strong adsorption energy between ZnS and polysulfides was validated by using first-principles theory calculations, which reveals the anchoring and catalytic mechanism.

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Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Active Anchoring Polysulfides of ZnS‐Decorated Porous Carbon Aerogel for a High‐Performance Lithium‐Sulfur Battery

Hua

Zhang

et al. 2019

ChemElectroChem

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Fungal Microbial Fuel Cells, an Opportunity for Energy Sources

Tiwari

Koreti

Kosre

et al. 2021

Energy

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A Review: Electrospun Nanofiber Materials for Lithium‐Sulfur Batteries

Liu

Deng

et al. 2019

Adv Funct Materials

155

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Lithium-sulfur (Li-S) batteries are in the spotlight because their outstanding theoretical specific energy is much higher than those of the commercial lithium ion (Li-ion) batteries. Li-S batteries are tough competitors for futuredeveloping energy storage in the fields of portable electronics and electric vehicles. However, the severe "shuttle effect" of the polysulfides and the serious damage of lithium dendrites are main factors blocking commercial production of Li-S batteries. Owing to their superior nanostructure, electrospun nanofiber materials commonly show some unique characteristics that can simultaneously resolve these issues. So far, various novel cathodes, separators, and interlayers of electrospun nanofiber materials which are applied to resolve these challenges are researched. This review presents the fundamental research and technological development of multifarious electrospun nanofiber materials for Li-S cells, including their processing methods, structures, morphology engineering, and electrochemical performance. Not only does the review article contain a summary of electrospun nanofiber materials in Li-S batteries but also a proposal for designing electrospun nanofiber materials for Li-S cells. These systematic discussions and proposed directions can enlighten thoughts and offer ways in the reasonable design of electrospun nanofiber materials for excellent Li-S batteries in the near future.or conducting coagulation bath) is placed against the capillary. A thin polymer fiber membrane is deposited on the collector. The electrospun nanofibers have big potential for developing the outstanding energy storage systems due to their high surface area and excellent surface-to-volume ratio which can offer numerous active sites and controllable porous structure to buffer the huge volume changes during battery cycling and infiltrate the electrolyte. [18] Electrospun nanofiber membranes possess high porosity, large specific surface area, and controllable pore size, which will block "shuttle effect" of polysulfides and enhance the wettability for electrolytes. [19] Electrospinning technique and carbonization process are facile to manufacture freestanding nanofiber fabrics with controllable porous architecture and outstanding electrical conductivity. Electrospun porous nanofibers can come into a reservoir-like matrix for the reserve of active materials. First, the hierarchical pores in electrospun porous nanofibers can improve the reactive S reaction sites and block soluble polysulfides, thereby decreasing the "shuttling effect" of polysulfides during the electrochemical cycling. Second, electrospun porous fibers have excellent physical and mechanical properties, outstanding architecture, and superior electrical conductivity, which can enhance the transfer of Li-ions and electrons, endowing extraordinary electrochemical performance of the whole battery system. [20] Figure 2 shows phase and morphological evolutions of the electrospun nanofibers. By combining the electrospinning and other treatment (thermal, chem...

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Porous carbonized graphene-embedded fungus film as an interlayer for superior Li–S batteries

Cited by 131 publications

References 51 publications

Active Anchoring Polysulfides of ZnS‐Decorated Porous Carbon Aerogel for a High‐Performance Lithium‐Sulfur Battery

Active Anchoring Polysulfides of ZnS‐Decorated Porous Carbon Aerogel for a High‐Performance Lithium‐Sulfur Battery

Fungal Microbial Fuel Cells, an Opportunity for Energy Sources

A Review: Electrospun Nanofiber Materials for Lithium‐Sulfur Batteries

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