Preparation of lamellar carbon matrix for sulfur as cathode material of lithium-sulfur batteries

Yang, Xianguang; Zhu, Wen; Qin, Ke; Wang, Huiyong

doi:10.1016/j.electacta.2014.07.080

Cited by 21 publications

(9 citation statements)

References 39 publications

(28 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…S5b. Sulfur exhibits a high diffraction peak at 23.4 o and 27.8 o , corresponding to the crystal plane of (222) and (040) [20,29]. The phase of TiO2 NTs is typical anatase [30], which is consistent with TEM analysis.…”

Section: Resultssupporting

confidence: 64%

Polypyrrole/TiO2 nanotube arrays with coaxial heterogeneous structure as sulfur hosts for lithium sulfur batteries

Zhao

Zhu

Chen

et al. 2016

Journal of Power Sources

Self Cite

View full text Add to dashboard Cite

A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. ABSTRACTThe lithium-sulfur cell has shown great prospects for future energy conversion and storage systems due to the high theoretical specific capacity of sulfur, 1675 mAh g -1 . However, it has been hindered by rapid capacity decay and low energy efficiency. In this work, polypyrrole (PPy)/TiO2 nanotubes with coaxial heterogeneous structure as the substrate of the cathode is prepared and used to improve the electrochemical performance of sulfur electrodes. TiO2 nanotubes decorated with PPy provide a highly ordered conductive framework for Li + ion diffusion and reaction with sulfur. This architecture also is helpful for trapping the produced polysulfides, and as a result attenuates the capacity decay. Furthermore, the heat treatment temperature used in the sulfur loading process has been confirmed to have an important impact on the overall performance of the resultant cell. The as-designed S/PPy/TiO2 nanotube cathode using an elevated heating temperature shows excellent 2 cycling stability with a high discharge capacity of 1150 mAh g -1 and average coulombic efficiency of 96% after 100 cycles.

show abstract

Section: Resultssupporting

confidence: 64%

Polypyrrole/TiO2 nanotube arrays with coaxial heterogeneous structure as sulfur hosts for lithium sulfur batteries

Zhao

Zhu

Chen

et al. 2016

Journal of Power Sources

Self Cite

View full text Add to dashboard Cite

show abstract

“…A variety of monosaccharide and disaccharides have been utilized as green carbon precursors for many years. By applying modern carbonization techniques, high quality carbon materials with special categories of pores and shapes can be obtained [6,82,84,85,[97][98][99]. Porous carbon spheres were developed by Park et al [97] using glucose as the carbon precursor and KOH as the activating agent.…”

Section: Bio-derived Hierarchical Porous Carbonmentioning

confidence: 99%

“…The dissolution of lithium polysulfides, agglomeration of insulated sulfur and corrosion of the lithium anode are some of the main reasons for the low utilization of sulfur. Yang et al [99] combined the chemical bonding and envelopment for high utilization of sulfur. They prepared a carbon precursor by carbonizing sucrose using concentrated H 2 SO 4 and the resultant precursor was deoxygenated to obtain the carbon matrix.…”

Section: Bio-derived Carbon Nanostructuresmentioning

confidence: 99%

Biomass-derived nanostructured porous carbons for lithium-sulfur batteries

et al. 2016

View full text Add to dashboard Cite

Biomass has been utilized as an energy source for thousands of years typically in the form of wood and charcoal. Technological advances create new methodologies to extract energy and chemicals from biomass. The biomass-derived nanostructured porous carbons (BDNPCs) are the most promising sulfur hosts and interlayers in rechargeable lithium-sulfur (Li-S) batteries. In this article, a comprehensive review is provided in the synthesis of nanostructured porous carbon materials for high-performance rechargeable Li-S batteries by using biomass. The performances of the Li-S batteries dependent on the porous structures (micro, meso and hierarchical) from BDNPCs are discussed, which can provide an in-depth understanding and guide rational design of high-performance cathode materials by using low-cost, sustainable and natural bio-precursors. Furthermore, the current existing challenges and the future research directions for enhancing the performance of Li-S batteries by using natural biomass materials are also addressed.

show abstract

“…Sulfur-doped, carbons are attractive functional materials for application in fuel cells, energy conversion/storage devices and as an anode materials in Li-ion batteries [4e6]. A number of carbonesulfur nanocomposites for LieS cathodes have been proposed [4,6]. It was demonstrated that the C/S composites may contain up to 90 wt.% of sulfur depending on the method of preparation [4].…”

Section: Introductionmentioning

confidence: 99%