Stabilization of Sulfur Cathode with Poly-peri-naphthalene for High Electrochemical Performance

Wu, Borong; Chen, Feibiao; Xiong, Y.; Liao, Weilin; Ren, Yonghuan; Wu, Feng

doi:10.1007/s11665-014-1369-x

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…We attribute the above morphological changes to a distortion in GO sheets due to the function of a space barrier to TAPA, which prevents the stacking of graphene sheets and results in a random arrangement of dislocations. Meanwhile, the large elimination of the oxygen-containing functional group on graphene oxide and the defects of the graphene layer structure also cause a rougher surface, which commonly plays a positive role in the polysulfides fixation as reported [51].…”

Section: Resultsmentioning

confidence: 95%

3D cross-linking N-doped graphene framework for high sulfur nanocrystal storage

Qian

Liu

et al. 2019

J. Phys. D: Appl. Phys.

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Three-dimensional (3D) nitrogen-doped graphene frameworks contributing to high-efficiency and high-stability Li-S batteries have received wide interest in energy storage fields. Herein, a 3D nitrogen-doped graphene composite framework was prepared with spatial dendritic triamines as crosslinking interconnectors, and subsequently employed for Li-S batteries with high efficiency and stability. The nanoscale spatial network of triamine-bonded graphene as molecular spacers can enlarge the interlayer spacing and change surface topography, which allows the nanocomposites to inhibit phase separation and thus capture and homogeneously store well-dispersed sulfur nanocrystals at a high capacity exceeding 70%, even by a solution process. In our work, the composite of S@GO-TAPA as the cathode material delivers the highest initial discharge capacity of 965 mAh g −1 . Besides that, an average coulombic efficiency of 91% is achieved after more than 100 cycles and 66.5% of the capacity remains, even after 100 cycles at 0.2 °C. The results suggest that the shuttle effect is remarkably suppressed. Therefore, the design strategy for cathode media is promising for fully solutionprocessing energy storage devices with printing, coating and spraying techniques.

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Section: Resultsmentioning

confidence: 95%

3D cross-linking N-doped graphene framework for high sulfur nanocrystal storage

Qian

Liu

et al. 2019

J. Phys. D: Appl. Phys.

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“…Polymers have also been introduced to composite cathodes as a supplement to the formal polymer binder to modify the interface between the carbon and sulfur constituents and/or act as polysulfide hosts during battery operation . Conjugated polymers have been the focus of many examples implementing this strategy .…”

Section: Cathodementioning

confidence: 99%

The use of polymers in Li‐S batteries: A review

Dirlam¹,

Glass²,

Char

et al. 2017

J. Polym. Sci. Part A: Polym. Chem.

135

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Recent developments in the use of polymeric materials as device components in lithium sulfur (Li-S) batteries are reviewed. Li-S batteries have generated tremendous interest as a next generation battery exhibiting charge capacities and energy densities that greatly exceed Li-ion battery technologies. In this Highlight, the first comprehensive review focusing on the use of polymeric materials throughout these devices is provided. The key role polymers play in Li-S technology is presented and organized in terms of the basic components that comprise a Li-S battery: the cathode, separator, electrolyte, and anode. After a straightforward introduction to the construction of a conventional Li-S device and the mechanisms at work during cell operation, the use of polymers as binders, protective coatings, separators, electrolytes, and electroactive materials in Li-S batteries will be reviewed.

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Stabilization of Sulfur Cathode with Poly-peri-naphthalene for High Electrochemical Performance

Cited by 2 publications

References 23 publications

3D cross-linking N-doped graphene framework for high sulfur nanocrystal storage

3D cross-linking N-doped graphene framework for high sulfur nanocrystal storage

The use of polymers in Li‐S batteries: A review

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