Highly Reversible Lithium Polysulfide Semiliquid Battery with Nitrogen‐Rich Carbon Fiber Electrodes

Guo, Xin; Li, Kefei; Bao, Weizhai; Zhao, Yufei; Xu, Jing; Líu, Hao; Wang, Guoxiu

doi:10.1002/ente.201700531

Cited by 12 publications

(16 citation statements)

References 45 publications

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“…[26] Restacking MXene nanosheets limit the accessibility of active ions and impede the utilization of MXene surfaces. [95] Inspired by previous studies, nitrogen-doped Ti 3 C 2 T x MXene (N-Ti 3 C 2 T x ) nanosheets were prepared by a novel one-step approach (Figure 11a). Energy Mater.…”

Section: Mxene-based Materials As Sulfur Hosts For Lithium-sulfur Batmentioning

confidence: 99%

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2D Metal Carbides and Nitrides (MXenes) as High‐Performance Electrode Materials for Lithium‐Based Batteries

Tang

Guo

et al. 2018

Advanced Energy Materials

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Tremendous efforts are devoted to developing advanced electrode materials with superior electrochemical performance, high energy density, and high power density for energy storage and conversion. Two‐dimensional (2D) materials, owing to their unique properties, have shown great potential for energy storage. Following the discovery of graphene, a new family of 2D transition metal carbides/nitrides, MXenes, derived from MAX phase precursors, have attracted extensive attention in recent years. The superior physical and chemical properties of MXenes include high mechanical strength, excellent electrical conductivity, multiple possible surface terminations, hydrophilic features, superior specific surface area, and the ability to accommodate intercalants. When applied as electrodes in lithium‐based batteries, MXenes have demonstrated excellent performance. In this progress report, the authors summarize the recent advances of MXenes and MXene‐based composites in terms of synthesis strategies, morphology engineering, physical/chemical properties, and their applications in lithium‐ion batteries and lithium–sulfur batteries. Furthermore, challenges and perspectives for MXenes and MXene‐based composites for lithium‐based energy storage devices are also outlined.

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Section: Mxene-based Materials As Sulfur Hosts For Lithium-sulfur Batmentioning

confidence: 99%

“…Notably, nitrogen doping in carbonaceous materials can enhance the electrochemical performance of lithium–sulfur batteries . Inspired by previous studies, nitrogen‐doped Ti 3 C 2 T x MXene (N‐Ti 3 C 2 T x ) nanosheets were prepared by a novel one‐step approach ( Figure 11 a).…”

Section: Application Of Mxenes For Lithium‐based Batteriesmentioning

confidence: 99%

2D Metal Carbides and Nitrides (MXenes) as High‐Performance Electrode Materials for Lithium‐Based Batteries

Tang

Guo

et al. 2018

Advanced Energy Materials

Self Cite

395

190

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“…Finally, to evaluate the adsorption capability of activated carbons, the lithium polysulfide adsorption measurements were carried out. Specifically, 5 m m of Li 2 S 6 solution was prepared by mixing Li 2 S and S in anhydrous DME and DOL (1 : 1 v / v ) in an Ar‐filled glovebox [44] . In the adsorption tests shown in Figure 11a, a 2 mL Li 2 S 6 solution was added to 5 mg of WL‐ACt4 and SL‐ACt3 materials, respectively.…”

Section: Resultsmentioning

confidence: 99%

Simple and Sustainable Preparation of Cathodes for Li−S Batteries: Regeneration of Granular Activated Carbon from the Odor Control System of a Wastewater Treatment Plant

et al. 2021

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To obtain a wide variety of green materials, numerous investigations have been undertaken on industrial waste that can act as sustainable resources. The use of hazardous wastes derived from wastewater treatment plants (WWTPs), especially the activated carbon used in odor control systems, is a highly abundant, scalable, and cost‐effective strategy. The reuse of waste materials is a key aspect, especially for the sustainable development of emerging energy storage systems, such as lithium‐sulfur (Li−S) batteries. Herein, granular active carbons from two WWTP treatment lines were regenerated in air at low temperature and utilized as the sulfur host with micro‐/mesoporous framework. The resulting regenerated carbon and sulfur composites were employed as cathodes for Li−S cells. The SL‐ACt3@S composite electrode with 60 wt% loaded sulfur exhibited a remarkable initial capacity of 1100 mAh g−1 at C/10 rate and higher than 800 mAh g−1 at C/2. Even at a rate of 1C, it maintained a high capacity of almost 700 mAh g−1 with a capacity retention of 85.4 % after 350 cycles, demonstrating a very low capacity fading of only 0.042 % per cycle. It is essential to note that the coulombic efficiency was always higher than 96 % during all the cycles. In this proposal, the only used source material was expired carbon from WWTP that was obtained with a simple and effective regeneration process. This “trash into treasure” strategy leads to a new way for using hazardous waste material as high‐performance and environmentally safe electrodes for advanced Li−S batteries.

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“…One of the most promising electrochemical systems is lithium–sulfur because it has a high theoretical specific energy of 2600 Wh kg −1 , which is in three to five times greater than the theoretical specific energy of electrochemical systems used in the current state‐of‐the‐art lithium‐ion batteries . In addition, sulfur is an abundant, low cost, and environmentally sustainable material . Studies on the development of lithium–sulfur batteries (LSBs) have been intensively conducted over the last decade …”

Section: Introductionmentioning

confidence: 99%

On the Factors Affecting Aging and Self‐Discharge of Lithium–Sulfur Cells. Effect of Positive Electrode Composition

et al. 2019

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Fast self‐discharge (reversible capacity loss during storage) and aging (irreversible capacity loss during cycling and storage) are important and difficult problems in the development of lithium–sulfur batteries (LSB). Both problems are caused by the solubility of the active materials of the positive electrode in the electrolyte. Processes at the negative and positive electrodes result in self‐discharge and aging of LSB. Sulfur (S) and lithium polysulfides (Li2Sn), dissolved in the electrolyte, interact with the lithium metal electrode, causing the formation of insoluble lithium sulfide (Li2S). The main reasons for irreversible capacity loss are the accumulation of Li2S on the negative electrode and the binding of S and Li2S in the micropores of carbon materials, included in positive electrodes, during prolonged cycling and storage of LSB. Li2S does not accumulate on the lithium electrode during storage of LSB for 120 days. The equilibrium content of Li2S on the lithium electrode is 0.06 mg cm−2. The main reason for the irreversible capacity loss is the binding of sulfur in the pore spaces of the carbon particles. The interaction of sulfur and Li2Sn (n > 4) with metallic lithium, causing the formation of soluble Li2Sn (n ≤ 4), is the reason for a reversible capacity loss.

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Highly Reversible Lithium Polysulfide Semiliquid Battery with Nitrogen‐Rich Carbon Fiber Electrodes

Cited by 12 publications

References 45 publications

2D Metal Carbides and Nitrides (MXenes) as High‐Performance Electrode Materials for Lithium‐Based Batteries

2D Metal Carbides and Nitrides (MXenes) as High‐Performance Electrode Materials for Lithium‐Based Batteries

Simple and Sustainable Preparation of Cathodes for Li−S Batteries: Regeneration of Granular Activated Carbon from the Odor Control System of a Wastewater Treatment Plant

On the Factors Affecting Aging and Self‐Discharge of Lithium–Sulfur Cells. Effect of Positive Electrode Composition

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