Wood-inspired multi-channel tubular graphene network for high-performance lithium-sulfur batteries

Li, Changxia; Yu, Jingyi; Xue, Shi-Lei; Cheng, Zhihua; Sun, Guoqiang; Zhang, Jing; Qu, Liangti

doi:10.1016/j.carbon.2018.07.023

Cited by 26 publications

(21 citation statements)

References 45 publications

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“…A wood-inspired multi-channel tubular graphene architecture prepared by chemical vapor deposition was also studied [82]. This unique structure provides a large interior space that accommodates sulfur and fixes the generated polysulfide.…”

Section: Methods For Constructing 3d Porous Li-s Battery Cathodes mentioning

confidence: 99%

Three-Dimensionally Porous Li-Ion and Li-S Battery Cathodes: A Mini Review for Preparation Methods and Energy-Storage Performance

Liu

Long

et al. 2019

Nanomaterials

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Among many types of batteries, Li-ion and Li-S batteries have been of great interest because of their high energy density, low self-discharge, and non-memory effect, among other aspects. Emerging applications require batteries with higher performance factors, such as capacity and cycling life, which have motivated many research efforts on constructing high-performance anode and cathode materials. Herein, recent research about cathode materials are particularly focused on. Low electron and ion conductivities and poor electrode stability remain great challenges. Three-dimensional (3D) porous nanostructures commonly exhibit unique properties, such as good Li+ ion diffusion, short electron transfer pathway, robust mechanical strength, and sufficient space for volume change accommodation during charge/discharge, which make them promising for high-performance cathodes in batteries. A comprehensive summary about some cutting-edge investigations of Li-ion and Li-S battery cathodes is presented. As demonstrative examples, LiCoO2, LiMn2O4, LiFePO4, V2O5, and LiNi1−x−yCoxMnyO2 in pristine and modified forms with a 3D porous structure for Li-ion batteries are introduced, with a particular focus on their preparation methods. Additionally, S loaded on 3D scaffolds for Li-S batteries is discussed. In addition, the main challenges and potential directions for next generation cathodes have been indicated, which would be beneficial to researchers and engineers developing high-performance electrodes for advanced secondary batteries.

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Section: Methods For Constructing 3d Porous Li-s Battery Cathodes mentioning

confidence: 99%

Three-Dimensionally Porous Li-Ion and Li-S Battery Cathodes: A Mini Review for Preparation Methods and Energy-Storage Performance

Liu

Long

et al. 2019

Nanomaterials

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“…A hierarchically aligned porous structure in wood has been found to enable the rapid transport of electrons and ions, and has been widely used in many emerging areas, including energy, 1–3 the environment, 4–6 and biomedicine 7–9 . In order to overcome some of the limitations of wood with its hierarchically aligned porous structures on non‐reproducible structures and their constituent non‐homogeneity, our group has designed and prepared a polyacrylonitrile (PAN) and cellulose scaffold with a hierarchically aligned porous structure similar to wood by using an ice template for the application of solar steam generation 10–12 …”

Section: Introductionmentioning

confidence: 99%

Wood‐inspired polyacrylonitrile foam with hierarchically aligned porous structure for application in water purification

Liu

et al. 2021

J of Applied Polymer Sci

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The main purpose of this study is to verify the excellent absorption efficiency of polyacrylonitrile (PAN) foam which has a hierarchically aligned porous structure similar to wood for water purification. Ice template and freeze drying method was employed to prepare the PAN foam, and the performance of the prepared sample was characterized by advanced technology. Experimental data revealed that the micromorphology, absorption efficiency, and mechanical properties were tunable by controlling the polymer concentration in solution. The PAN foam prepared at 7 wt% not only had excellent absorption efficiency, but also had great water flux. The highest absorption efficiency of the PAN foam prepared at 7 wt% for the model dye, methylene blue, reached 97.83%. Therefore, a new strategy for water purification by filtration using a scaffold with a hierarchically aligned porous structure is possible.

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“…Lithium–sulfur (Li–S) batteries have received significant attention because of their high specific capacity of 1675 mAh g −1 and theoretical energy density of 2600 Wh kg −1 . In addition, sulfur, used as the active material, is naturally abundant, low‐cost, and eco‐friendly . Nevertheless, the commercial application of Li–S batteries has been hindered by several challenges: (i) soluble lithium polysulfides (LiPS, Li 2 S x , 4≤ x ≤8), which cause undesirable shuttle phenomena and subsequently result in low utilization of sulfur, capacity fading, and low coulombic efficiency; (ii) the insulating properties of sulfur and solid reduction products (Li 2 S 2 and/or Li 2 S), which impede the electron transport and give rise to low utilization of sulfur; (iii) huge volume variation of the active materials during the charge/discharge process, resulting in the deterioration of the sulfur cathodes and dramatic capacity fading…”

Section: Introductionmentioning

confidence: 99%

One‐Pot Synthesis of a Copolymer Micelle Crosslinked Binder with Multiple Lithium‐Ion Diffusion Pathways for Lithium–Sulfur Batteries

et al. 2020

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Fast lithium‐ion diffusion is very important to obtain high capacity and excellent cycling stability of lithium–sulfur batteries. In this study, a copolymer micelle crosslinked binder (FNA) for lithium–sulfur batteries was successfully synthesized through a one‐pot environmentally friendly approach. The micelles were used as crosslinkers and carriers for the electrolyte. The FNA binder provided multiple lithium‐ion diffusion pathways to increase the lithium‐ion diffusion, which reduced the polarization of the sulfur cathode during the cycling process. The lithium‐ion diffusion pathways of the FNA were provided by the electrolyte hosted in the micelles, the polyethylene oxide and polypropylene oxide segments, and the carboxylate and sulfonate groups in the FNA. In addition, FNA possesses strong lithium polysulfides adsorption and high adhesion properties. Therefore, the electrode with the FNA binder presented a reversible capacity of 571 mAh g−1 with a capacity fade of 0.032 % after 1000 cycles at a cycling rate of 0.5 C, which is much higher than those of the polyvinylidene fluoride (PVDF) sulfur cathode.

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Wood-inspired multi-channel tubular graphene network for high-performance lithium-sulfur batteries

Cited by 26 publications

References 45 publications

Three-Dimensionally Porous Li-Ion and Li-S Battery Cathodes: A Mini Review for Preparation Methods and Energy-Storage Performance

Three-Dimensionally Porous Li-Ion and Li-S Battery Cathodes: A Mini Review for Preparation Methods and Energy-Storage Performance

Wood‐inspired polyacrylonitrile foam with hierarchically aligned porous structure for application in water purification

One‐Pot Synthesis of a Copolymer Micelle Crosslinked Binder with Multiple Lithium‐Ion Diffusion Pathways for Lithium–Sulfur Batteries

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