Two-dimensional materials for advanced Li-S batteries

Shao, Qinjun; Wu, Zhong‐Shuai; Chen, Jian

doi:10.1016/j.ensm.2019.02.001

Cited by 139 publications

(62 citation statements)

References 195 publications

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“…A growing number of research efforts have been devoted to addressing these issues by, for example, introducing functional fillers in the batteries either as an interlayer in‐between the separator and electrode or as a modified layer on the separator (described as filler‐on‐CPS in this review) in an attempt to achieve high capacity and improved cycling battery performance. [ 133,134 ] Herein, we will focus on summarizing the recent progress of filler‐on‐CPSs for high‐performance Li–S batteries, classified by the materials and functions of the coating layers (Figure 6c,d). Regarding the materials in the coating layer, various functional fillers based on inorganic materials, carbon‐based materials, porous materials, and hybrid materials are discussed.…”

Section: Composite Polymer Separator For Conventional Li‐based Secondmentioning

confidence: 99%

Tough and Flexible, Super Ion‐Conductive Electrolyte Membranes for Lithium‐Based Secondary Battery Applications

Mong

Shi

Jeon

et al. 2020

Adv Funct Materials

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Recently, stringent requirements brought on by environmental regulations and safety issues are driving the development of solid electrolytes to replace conventional liquid electrolyte systems for lithium‐based secondary batteries (LiBs). However, the low Li‐ion conductivity and/or poor mechanical properties of electrolytes remain the main obstacles hindering their commercialization. Hierarchitectural and composite polymer separators (CPSs) based on electrolyte membranes have been reported as promising tools for both high ionic conductivity and mechanical stability. In light of such work, the new types of flexible electrolytes based on phase‐separated and mixed‐phase morphologies achieved via self‐assembly and the use of functional molecular composites are reviewed along with the fundamental mechanisms associated with such systems. In particular, the structure and morphology, ionic conductivity, thermal/mechanical stability, and fabrication of polymer electrolytes are introduced. Additionally, recent advancements in CPSs including methods of ensuring low interfacial resistance, the respective contributions of these critical factors to the significant functional properties of CPSs, and directions for development and essential applications in the field of CPSs for LiBs are presented. Based on previous works, the perspectives put forth will aid in the design of advanced electrolytes for practical Li secondary batteries in the near future.

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Section: Composite Polymer Separator For Conventional Li‐based Secondmentioning

confidence: 99%

Tough and Flexible, Super Ion‐Conductive Electrolyte Membranes for Lithium‐Based Secondary Battery Applications

Mong

Shi

Jeon

et al. 2020

Adv Funct Materials

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“…Nevertheless, the liquid-solid conversion of soluble LiPSs to solid Li 2 S is essentially sluggish which gives rise to the inevitable diffusion of LiPSs and results in unsatisfactory cycling performance [14 , 15] . Consequently, accelerating the conversion kinetics of LiPSs to Li 2 S is recognized as a promising strategy to minimize the diffusion of LiPSs and re-alize long cycle life [16][17][18][19] . So far, many compounds with high catalytic activities have been reported to boost the electrochemical conversion kinetics of LiPSs and suppress the shuttle effect, such as metal oxides (Fe 2 O 3 [20] , MnO 2 [21] , V 2 O 3 [22] ), metal sulfides (CoS 2 [23] , NiS [24] , WS 2 [25] ), metal carbides (Ti 3 C 2 [26] , W 2 C [27] , Mo 2 C [28] ) and metal nitrides (TiN [29] , Co 4 N [30] , VN [31] ).…”

Section: Introductionmentioning

confidence: 99%

Rational design of MoS2 nanosheets decorated on mesoporous hollow carbon spheres as a dual-functional accelerator in sulfur cathode for advanced pouch-type Li–S batteries

Shao

et al. 2020

Journal of Energy Chemistry

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“…For a wide range of applications, the battery technology is expected to evolve from the current LIBs to the next‐generation high‐capacity batteries. Lithium–sulfur batteries (LSBs) have always been considered as a promising alternative owing to their extremely high theoretical capacity, environmental friendliness, and cost effectiveness [9–12] . Its desirable high‐energy density (2600 Wh kg −1 ) is attributed to the utilization of the sulfur cathode and Li anode, whose theoretical capacities could reach up to 1.672 and 3.861 Ah g −1 , respectively.…”

Section: Introductionmentioning

confidence: 99%

Cation‐Selective Separators for Addressing the Lithium–Sulfur Battery Challenges

et al. 2020

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Lithium–sulfur batteries (LSBs) have become one of the most promising candidates for next‐generation energy storage systems owing to their high theoretical energy density, environmental friendliness, and cost effectiveness. However, real‐word applications are seriously restricted by an undesirable shuttle effect and Li dendrite formation. In essence, uncontrollable anion transport is a key factor that causes both polysulfide shuttling and dendrite formation, which creates the possibility of simultaneously addressing the two critical issues in LSBs. An effective strategy to control anion transport is the construction of cation‐selective separators. Significant progress has been achieved in the inhibition of the shuttle effect, whereas addressing the problem of Li dendrite formation by utilizing a cation‐selective separator is still under way. From this viewpoint, this Review analyzes critical issues with regard to the shuttle effect and Li dendrite formation caused by uncontrollable anion transport, based on which roles and advantages of cation‐selective separators toward high‐performance LSBs are presented. According to the separator‐construction principle, the latest advances and progress in cation‐selective separators in inhibiting the shuttle effect and Li dendrite formation are reviewed in detail. Finally, some challenges and prospects are proposed for the future development of cation‐selective separators. This Review is anticipated to provide a new perspective for simultaneously addressing the two critical issues in LSBs.

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Two-dimensional materials for advanced Li-S batteries

Cited by 139 publications

References 195 publications

Tough and Flexible, Super Ion‐Conductive Electrolyte Membranes for Lithium‐Based Secondary Battery Applications

Tough and Flexible, Super Ion‐Conductive Electrolyte Membranes for Lithium‐Based Secondary Battery Applications

Rational design of MoS2 nanosheets decorated on mesoporous hollow carbon spheres as a dual-functional accelerator in sulfur cathode for advanced pouch-type Li–S batteries

Cation‐Selective Separators for Addressing the Lithium–Sulfur Battery Challenges

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