Hierarchical Porous Carbon Derived from Peanut Hull for Polysulfide Confinement in Lithium–Sulfur Batteries

Li, Min; Hu, Peng; Wang, Xing; Niu, Zhihao; Zhou, Qihao; Wang, Qiuyue; Zhu, Mingming; Guo, Cong; Zhang, Lei; Lu, J. Y.; Li, Jingfa

doi:10.1002/ente.201800898

Cited by 13 publications

(11 citation statements)

References 23 publications

(24 reference statements)

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“…Li's group designed a low-cost and readily scalable synthesis strategy to produce HPC. [123] The HPC/S cathode delivered a high capacity of 1002 mAh g −1 S at the specific current of 0.5 A g −1 , and then, after 100 cycles, it delivered a capacity of 601 mAh g −1 S at the same current density.…”

Section: Hollow and Porous Structuresmentioning

confidence: 94%

Carbonaceous Hosts for Sulfur Cathode in Alkali‐Metal/S (Alkali Metal = Lithium, Sodium, Potassium) Batteries

Lai

Cai

et al. 2021

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Alkali‐metal/sulfur batteries hold great promise for offering relatively high energy density compared to conventional lithium‐ion batteries. By providing viable sulfur composites that can be effectively used, carbonaceous hosts as a key component play critical roles in overcoming the preliminary challenges associated with the insulating sulfur and its relatively soluble polysulfides. Herein, a comprehensive overview and recent progress on carbonaceous hosts for advanced next‐generation alkali‐metal/sulfur batteries are presented. In order to encapsulate the highly active sulfur mass and fully limit polysulfide dissolution, strategies for tailoring the design and synthesis of carbonaceous hosts are summarized in this work. The sticking points that remain for sulfur cathodes in current alkali‐metal/sulfur systems and the future remedies that can be provided by carbonaceous hosts are also indicated, which can lead to long cycling lifetimes and highly reversible capacities under repeated sulfur reduction reactions in alkali‐metal/sulfur during cycling.

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Section: Hollow and Porous Structuresmentioning

confidence: 94%

Carbonaceous Hosts for Sulfur Cathode in Alkali‐Metal/S (Alkali Metal = Lithium, Sodium, Potassium) Batteries

Lai

Cai

et al. 2021

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“…The physical activation method is performed by inert‐atmosphere calcination, followed by high‐temperature (600–1200°C) activation with the introduction of suitable gasifying agents (CO 2 , 135,152–157 NH 3 , 158,159 Cl 2 , 160–163 and steam 164 ). In contrast, chemical activation includes mixing of carbonaceous materials and activating agents (e.g., KOH, 29,84,165–199 NaOH, 200 K 2 CO 3 , 201,202 H 3 PO 4 , 203–205 etc. ), followed by calcination at a lower temperature (400–900°C).…”

Section: Synthetic Strategies Of Hpcsmentioning

confidence: 99%

Status and perspectives of hierarchical porous carbon materials in terms of high‐performance lithium–sulfur batteries

et al. 2022

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Lithium-sulfur (Li-S) batteries, although a promising candidate of nextgeneration energy storage devices, are hindered by some bottlenecks in their roadmap toward commercialization. The key challenges include solving the issues such as low utilization of active materials, poor cyclic stability, poor rate performance, and unsatisfactory Coulombic efficiency due to the inherent poor electrical and ionic conductivity of sulfur and its discharged products (e.g., Li 2 S 2 and Li 2 S), dissolution and migration of polysulfide ions in the electrolyte, unstable solid electrolyte interphase and dendritic growth on anodes, and volume change in both cathodes and anodes. Owing to the high specific surface area, pore volume, low density, good chemical stability, and particularly multimodal pore sizes, hierarchical porous carbon (HPC) materials have received considerable attention for circumventing the above problems in Li-S batteries. Herein, recent progress made in the synthetic methods and deployment of HPC materials for various components including sulfur cathodes, separators and interlayers, and lithium anodes in Li-S batteries is presented and summarized. More importantly, the correlation between the structures (pore volume, specific surface area, degree of pores, and heteroatom-doping) of HPC and the electrochemical performances of Li-S batteries is elaborated. Finally, a discussion on the challenges and future perspectives associated with HPCs for Li-S batteries is provided.

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“…With the help of physical or chemical adsorption, sulfur is fixed on the surface of the host matrix to improve the electrode conductivity and inhibit the shuttle effect. In recent years, carbon materials, metal compounds, and conductive polymer materials have been widely used and achieved many valuable milestones.…”

Section: Introductionmentioning

confidence: 99%

A Facile Synthesis of Stable TiO₂/TiC Composite Material as Sulfur Immobilizers for Cathodes of Lithium–Sulfur Batteries with Excellent Electrochemical Performances

et al. 2019

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At the moment, sulfur immobilizers for lithium–sulfur batteries have been extensively studied. Herein, a facile synthesis of stable TiO2/TiC composite materials as sulfur immobilizers for cathodes of lithium–sulfur batteries is shown; the conductivity of TiC and strong adsorption of the Ti—O bond on sulfur in TiO2 are combined together to achieve excellent conductivity and effectively inhibit the shuttle effect of polysulfides. X‐ray diffraction, scanning electron microscopy, and Raman spectrogram peak tests show that the TiC surface is successfully coated by a layer of TiO2 with a stable structure and excellent porosity. Physical and chemical adsorption of sulfur hosting with the TiO2/TiC composite material is formed by a hot‐melting method. Electrochemical performance tests show that when the proportion of sulfur hosting is 55%, the cathode has better reversibility, lower charge transfer impedance, and higher lithium‐ion diffusion rate. Charge and discharge results prove that the specific capacities are 1044.68, 870.62, and 696.06 mAh g−1 at 0.1, 0.2, and 0.5 C, respectively, and after 400 cycles, the capacity retention rate is over 50%. This proves that TiO2/TiC composite materials are well‐suited to act as sulfur immobilizers for lithium–sulfur batteries.

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Hierarchical Porous Carbon Derived from Peanut Hull for Polysulfide Confinement in Lithium–Sulfur Batteries

Cited by 13 publications

References 23 publications

Carbonaceous Hosts for Sulfur Cathode in Alkali‐Metal/S (Alkali Metal = Lithium, Sodium, Potassium) Batteries

Carbonaceous Hosts for Sulfur Cathode in Alkali‐Metal/S (Alkali Metal = Lithium, Sodium, Potassium) Batteries

Status and perspectives of hierarchical porous carbon materials in terms of high‐performance lithium–sulfur batteries

A Facile Synthesis of Stable TiO₂/TiC Composite Material as Sulfur Immobilizers for Cathodes of Lithium–Sulfur Batteries with Excellent Electrochemical Performances

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Hierarchical Porous Carbon Derived from Peanut Hull for Polysulfide Confinement in Lithium–Sulfur Batteries

Cited by 13 publications

References 23 publications

Carbonaceous Hosts for Sulfur Cathode in Alkali‐Metal/S (Alkali Metal = Lithium, Sodium, Potassium) Batteries

Carbonaceous Hosts for Sulfur Cathode in Alkali‐Metal/S (Alkali Metal = Lithium, Sodium, Potassium) Batteries

Status and perspectives of hierarchical porous carbon materials in terms of high‐performance lithium–sulfur batteries

A Facile Synthesis of Stable TiO2/TiC Composite Material as Sulfur Immobilizers for Cathodes of Lithium–Sulfur Batteries with Excellent Electrochemical Performances

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Product

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A Facile Synthesis of Stable TiO₂/TiC Composite Material as Sulfur Immobilizers for Cathodes of Lithium–Sulfur Batteries with Excellent Electrochemical Performances