Three-Dimensional Carbon Nanotubes Forest/Carbon Cloth as an Efficient Electrode for Lithium–Polysulfide Batteries

Wu, Xiongwei; Xie, Hao; Deng, Qingqing; Wang, Huixian; Sheng, Hang; Yin, Ya‐Xia; Zhou, Wei; Li, Ruilian; Guo, Yu‐Guo

doi:10.1021/acsami.6b14687

Cited by 55 publications

(39 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The theoretical sulfur loading value at 80% pore filling is well above the requirements (≥6 mg sulfur/cm 2 electrode) to achieve LSB, with an energy density comparable to that of the state-of-the-art LIBs [ 3 , 31 ]. It should be noted that pore size distribution (PSD) calculated by non-local density functional theory (NLDFT) is sharply centered at 1.1 nm (inset image in Figure 1 f), which is distinguished from other carbon cloth electrodes previously used for LSBs in that they have a low surface area (~7 m 2 /g) or a hierarchical porous structure where meso- and micro-pores (0.5~2 nm) coexist [ 28 , 29 , 32 ]. It is also above the range (<0.5 nm) that exerts a strong influence on electrolyte penetration and thereby the electrochemical reaction between polysulfide and lithium [ 33 ].…”

Section: Resultsmentioning

confidence: 99%

“…A gradual decrease in peak current density was observed in CC-S2 ( Figure 2 a). We attribute this behavior to typical sulfur loss from CC via the well-known dissolution, which can be alleviated by simply increasing the sulfur loading (CC-S6 in Figure 2 b and CC-S10 in Figure 2 c) [ 32 ]. It is notable that the CV diagram of CC-S6 is reproducible over cycles, indicating a stable retention of soluble polysulfides.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

A Polysulfide-Infiltrated Carbon Cloth Cathode for High-Performance Flexible Lithium–Sulfur Batteries

et al. 2018

View full text Add to dashboard Cite

For practical application of lithium–sulfur batteries (LSBs), it is crucial to develop sulfur cathodes with high areal capacity and cycle stability in a simple and inexpensive manner. In this study, a carbon cloth infiltrated with a sulfur-containing electrolyte solution (CC-S) was utilized as an additive-free, flexible, high-sulfur-loading cathode. A freestanding carbon cloth performed double duty as a current collector and a sulfur-supporting/trapping material. The active material in the form of Li2S6 dissolved in a 1 M LiTFSI-DOL/DME solution was simply infiltrated into the carbon cloth (CC) during cell fabrication, and its optimal loading amount was found to be in a range between 2 and 10 mg/cm2 via electrochemical characterization. It was found that the interwoven carbon microfibers retained structural integrity against volume expansion/contraction and that the embedded uniform micropores enabled a high loading and an efficient trapping of sulfur species during cycling. The LSB coin cell employing the CC-S electrode with an areal sulfur loading of 6 mg/cm2 exhibited a high areal capacity of 4.3 and 3.2 mAh/cm2 at C/10 for 145 cycles and C/3 for 200 cycles, respectively, with minor capacity loss (<0.03%/cycle). More importantly, such high performance could also be realized in flexible pouch cells with dimensions of 2 cm × 6 cm before and after 300 bending cycles. Simple and inexpensive preparation of sulfur cathodes using CC-S electrodes, therefore, has great potential for the manufacture of high-performance flexible LSBs.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

A Polysulfide-Infiltrated Carbon Cloth Cathode for High-Performance Flexible Lithium–Sulfur Batteries

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The benefit of the strongly coupled interface between each carbon component was also proved by Wu et al, by directly growing 3D CNT forests on commercial cloths to afford rapid electron transport paths. 206 Besides nanoscale interfacial charge transfer, macroscopic regularity strongly impacts the performance of 1D/3D hybridized flexible electrodes. Sun et al reported an aligned and laminated carbon hybrid cathode that was highly flexible and accommodated a large amount of sulfur (71 wt%), in which ordered mesoporous carbon CMK-3/S composite (CMK-3@S) particles were alternately laminated between aligned CNT sheets with a small thickness (B20 nm) and a high conductivity (10 2 -10 3 S cm À1 ).…”

mentioning

confidence: 99%

A review of flexible lithium–sulfur and analogous alkali metal–chalcogen rechargeable batteries

2017

View full text Add to dashboard Cite

Flexible energy storage systems are imperative for emerging flexible devices that are revolutionizing our life. Lithium-ion batteries, the current main power sources, are gradually approaching their theoretical limitation in terms of energy density. Therefore, alternative battery chemistries are urgently required for next-generation flexible power sources with high energy densities, low cost, and inherent safety. Flexible lithium-sulfur (Li-S) batteries and analogous flexible alkali metal-chalcogen batteries are of paramount interest owing to their high energy densities endowed by multielectron chemistry. In this review, we summarized the recent progress of flexible Li-S and analogous batteries. A brief introduction to flexible energy storage systems and general Li-S batteries has been provided first. Progress in flexible materials for flexible Li-S batteries are reviewed subsequently, with a detailed classification of flexible sulfur cathodes as those based on carbonaceous (e.g., carbon nanotubes, graphene, and carbonized polymers) and composite (polymers and inorganics) materials and an overview of flexible lithium anodes and flexible solid-state electrolytes. Advancements in other flexible alkali metal-chalcogen batteries are then introduced. In the next part, we emphasize the importance of cell packaging and flexibility evaluation, and two special flexible battery prototypes of foldable and cable-type Li-S batteries are highlighted. In the end, existing challenges and future development of flexible Li-S and analogous alkali metal-chalcogen batteries are summarized and prospected.

show abstract

“…After 600 cycles, the value of the R ct increases to 128.2, 156.3, 178.8 and 237 Ω, with the increase rate of 136%, 95%, 66% and 97%, respectively. The increase of the R ct might be attributed to the formation of the insulating Li 2 S/Li 2 S 2 passivation layer on the Li metal surface produced by the reaction between high-order polysulfides and the lithium anode, and the aggregation of solid sulfur species on the outer surface of active materials [36]. The polar MnO 2 is beneficial to the interfacial contacts between the soluble sulfur species and the CNF matrix, promoting the uniform deposition of Li 2 S/Li 2 S 2 and further avoiding the formation of dead active material ( Fig.…”

Section: Characterizations Of the Cnf@s/mnomentioning

confidence: 99%

In situ assembly of MnO2 nanosheets on sulfur-embedded multichannel carbon nanofiber composites as cathodes for lithium-sulfur batteries

Wang

et al. 2020

Sci. China Mater.

View full text Add to dashboard Cite

Rechargeable lithium-sulfur batteries have been regarded as the promising next generation energy storage system due to their overwhelming advantages in energy density. However, their practical implementations are hindered by severe capacity fading and low sulfur utilization, which are caused by polysulfide shuttling and the insulating nature of sulfur. Herein, sulfur-embedded porous multichannel carbon nanofibers coated with MnO 2 nanosheets (CNFs@S/MnO 2) are rationally designed and fabricated as cathode for lithiumsulfur battery. The high conductivity of porous multichannel carbon nanofibers facilitates the kinetics of electron and ion transport in the electrodes, and the porous structure encapsulates and sequesters sulfur in its interior void space to physically retard the dissolution of high-order polysulfides. Moreover, the MnO 2 shell exhibits a combination of physical and chemical adsorption for high-order polysulfides, which could sequester polysulfides leaked from the carbon matrix after long-time charge/discharge cycles, resulting in enhanced cyclic stability. As a result, the electrode delivers a specific capacity of 1286 mA h g −1 at 0.1 C and 728 mA h g −1 at 3 C. And the capacity could remain 774 mA h g −1 after 600 cycles at 1 C.

show abstract

Three-Dimensional Carbon Nanotubes Forest/Carbon Cloth as an Efficient Electrode for Lithium–Polysulfide Batteries

Cited by 55 publications

References 55 publications

A Polysulfide-Infiltrated Carbon Cloth Cathode for High-Performance Flexible Lithium–Sulfur Batteries

A Polysulfide-Infiltrated Carbon Cloth Cathode for High-Performance Flexible Lithium–Sulfur Batteries

A review of flexible lithium–sulfur and analogous alkali metal–chalcogen rechargeable batteries

In situ assembly of MnO2 nanosheets on sulfur-embedded multichannel carbon nanofiber composites as cathodes for lithium-sulfur batteries

Contact Info

Product

Resources

About