Nitrogen-doped carbons in Li–S batteries: materials design and electrochemical mechanism

Li, Xia; Sun, Xueliang

doi:10.3389/fenrg.2014.00049

Cited by 26 publications

(10 citation statements)

References 77 publications

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“…These properties of the carbon nanofiber-sulfur based cathodes form ideal inter wound reservoir-like matrices that accommodate active sulfur [123,153,[224][225][226][227][228][229][230][231][232][233][234][235][236][237][238][239][240], while the porous structure ideally confine/trap the active sulfur and its soluble polysulfides, which can greatly reduce the shuttle effect. In addition, the carbon nanofibers improve the mechanical/ structural integrity of the composite electrode as well as the conductivity, [232,233,238] that further enhances electrons/ Li + transfer and improves sulfur utilization in Li-S batteries [123,153,[224][225][226][227][228][229][230][231][232][233][234][235][236][237][238][239][240] and by extension, improves the batteries electrochemical performance. The challenge however, on the use of these carbon nanofiber-sulfur-based cathodes in Li-S batteries is the inconsistency of the fiber surface area, particularly those produced by electrospinning [225,226,…”

Section: Composite Nanofibers For Li/s Battery Cathodementioning

confidence: 99%

Composite Nanofibers as Advanced Materials for Li-ion, Li-O2 and Li-S Batteries

Agubra

Zúñiga

Flores

et al. 2016

Electrochimica Acta

112

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The quest to increase the energy density and improve the cycle life performance of lithium ion batteries (LIBs) and beyond has led to the development of various suitable and alternative materials for energy storage and conversion. The morphology and electrode architecture in advanced battery materials have been re-designed into nanofibers and composite nanofibers. Nanofiber-based separators and electrodes have been demonstrated to improve the energy density and cycling performance of LIBs. The improvement in the structure and morphology of nanofibers in Lithium ion batteries such as LiSi and LiSn, have once again ignited the interest in these Li:M alloys anode as an alternative anode and cathode materials. The major challenges that confront this new frontier has been the seemingly lack of scalable method among the various techniques and design nanofibers with good structure and morphology that could prevent dendrite penetrations. However, there seem to be a solution in sight with the advent of mass production techniques of nanofibers by electrospinning and centrifugal spinning (i.e. Forcespinning®) that have recently been developed. In this paper, the use of nanofibers and composite nanofibers as electrode and separator materials for lithium ion, Li-O2 and Li sulfur batteries is reviewed. The discussion focuses on the performance characteristics of these nanostructured electrode and separator materials and methods used to improve their performances.

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Section: Composite Nanofibers For Li/s Battery Cathodementioning

confidence: 99%

Composite Nanofibers as Advanced Materials for Li-ion, Li-O2 and Li-S Batteries

Agubra

Zúñiga

Flores

et al. 2016

Electrochimica Acta

112

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“…In the HCS (80%) cathode, the discharge products are adsorbed on the surface of the HC carbon because of the confinement effects of carbon, heteroatom, and silica. In addition, high-resolution Li 1s spectra (Figure c) reveal the presence of Li–O (56.5 eV), Li–N (55.8 eV), and Li–S (55.08 eV) attributed to the interaction of sulfides of lithium with various functionalities. ,,− …”

Section: Resultsmentioning

confidence: 86%

Hierarchical Porous Carbon Material with Multifunctionalities Derived from Honeycomb as a Sulfur Host and Laminate on the Cathode for High-Performance Lithium–Sulfur Batteries

Chulliyote

Hareendrakrishnakumar

Joseph

2019

ACS Sustainable Chem. Eng.

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Lithium−sulfur batteries (LSBs) received worldwide attention because of its high theoretical capacity of sulfur, 1675 mA h g −1 . However, the low electrical conductivity of sulfur, dissolution of polysulfides (PS) in the electrolyte, and PS shuttle toward the Li anode restricted its reach to the market. In this paper, we present a porous carbon material with multifunctionalities derived from honeycomb (HC) used as a conductive host for sulfur for the first time. Honeycomb derived carbon−sulfur composite with 80% of sulfur [HCS (80%)] gives a high reversible capacity of 1101 mA h g −1 at the 0.1 C rate after 200 cycles with 82% capacity retention. The coating of HC onto the cathode film [HCS (80%)] yielded 92% capacity retention, where sulfur is sandwiched between the two conductive hosts. Therefore, the HCS (80%) composite electrode with coating of HC [HCS (80%)−HC] exhibits good improvement in both cycling performance and rate capability compared to bare cathode HCS, even though the sulfur content of the HCS composite is as high as 80%. Thus, HCS (80%)−HC would be a potent combination for highperformance LSBs.

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“…3). There have been several reviews that expand on these topics and can be found in the references [106][107][108][109][110][111][112][113][114][115][116][117][118] (Fig. 5).…”

Section: Fundamental Studies and Materials Selectionmentioning

confidence: 99%

Structural Design of Lithium–Sulfur Batteries: From Fundamental Research to Practical Application

Yang

Adair

et al. 2018

Electrochem. Energ. Rev.

Self Cite

316

206

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Lithium-sulfur (Li-S) batteries have been considered as one of the most promising energy storage devices that have the potential to deliver energy densities that supersede that of state-of-the-art lithium ion batteries. Due to their high theoretical energy density and cost-effectiveness, Li-S batteries have received great attention and have made great progress in the last few years. However, the insurmountable gap between fundamental research and practical application is still a major stumbling block that has hindered the commercialization of Li-S batteries. This review provides insight from an engineering point of view to discuss the reasonable structural design and parameters for the application of Li-S batteries. Firstly, a systematic analysis of various parameters (sulfur loading, electrolyte/sulfur (E/S) ratio, discharge capacity, discharge voltage, Li excess percentage, sulfur content, etc.) that influence the gravimetric energy density, volumetric energy density and cost is investigated. Through comparing and analyzing the statistical information collected from recent Li-S publications to find the shortcomings of Li-S technology, we supply potential strategies aimed at addressing the major issues that are still needed to be overcome. Finally, potential future directions and prospects in the engineering of Li-S batteries are discussed.

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Nitrogen-doped carbons in Li–S batteries: materials design and electrochemical mechanism

Cited by 26 publications

References 77 publications

Composite Nanofibers as Advanced Materials for Li-ion, Li-O2 and Li-S Batteries

Composite Nanofibers as Advanced Materials for Li-ion, Li-O2 and Li-S Batteries

Hierarchical Porous Carbon Material with Multifunctionalities Derived from Honeycomb as a Sulfur Host and Laminate on the Cathode for High-Performance Lithium–Sulfur Batteries

Structural Design of Lithium–Sulfur Batteries: From Fundamental Research to Practical Application

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