Modification of lithium sulfur batteries by sieving effect: Long term investigation of carbon molecular sieve

Cao, Yongan; Wu, Chaoxia; Wang, Wenju; Li, Yuqian; You, Jiyuan; Zhang, Bo; Zou, Jiaxuan; Abuelgasim, Siddig; Zhu, Ting; Wu, Jun; Zhao, Jiucheng

doi:10.1016/j.est.2022.105228

Cited by 14 publications

(2 citation statements)

References 32 publications

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“…They found that metal sulfides as activation catalysts could catalyze the oxidation of Li 2 S to S. Electrocatalysts have the potential to address the issues of severe LiPS shuttle effect and sluggish sulfur redox kinetics in Li-S batteries. Consequently, electrocatalyst design has attracted a great deal of attention [11][12][13][38][39][40][41][42][43][44][45][46][47][48][49]. After 60 years of continuous development, now, looking ahead to the future, considerable efforts are still required to bring Li-S batteries to the market, such as sulfur loading > 8 mg cm −2 , electrolyte to sulfur ratio < 3 µL mg −1 , negative to positive ratio < 4, carbon content < 5 wt%, lifespans > 500 cycles.…”

Section: Introductionmentioning

confidence: 99%

Boosting Lean Electrolyte Lithium–Sulfur Battery Performance with Transition Metals: A Comprehensive Review

et al. 2023

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Lithium–sulfur (Li–S) batteries have received widespread attention, and lean electrolyte Li–S batteries have attracted additional interest because of their higher energy densities. This review systematically analyzes the effect of the electrolyte-to-sulfur (E/S) ratios on battery energy density and the challenges for sulfur reduction reactions (SRR) under lean electrolyte conditions. Accordingly, we review the use of various polar transition metal sulfur hosts as corresponding solutions to facilitate SRR kinetics at low E/S ratios (< 10 µL mg−1), and the strengths and limitations of different transition metal compounds are presented and discussed from a fundamental perspective. Subsequently, three promising strategies for sulfur hosts that act as anchors and catalysts are proposed to boost lean electrolyte Li–S battery performance. Finally, an outlook is provided to guide future research on high energy density Li–S batteries. Graphical Abstract

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Section: Introductionmentioning

confidence: 99%

Boosting Lean Electrolyte Lithium–Sulfur Battery Performance with Transition Metals: A Comprehensive Review

et al. 2023

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“…Therefore, the investigation of abundant and low-cost energy storage devices is quite desirable. [6][7][8][9] Potassium-ion batteries (PIBs), DOI: 10.1002/admt.202202187 which take advantage of ample and low-cost potassium-related resources, are based on the intercalation of K + in electrode materials, displaying a rocking chair working mechanism similar to LIBs. Potassium has a redox potential close to lithium, ensuring a wide voltage window for PIBs.…”

Section: Introductionmentioning

confidence: 99%

Insight into Highly Graphitic Hollow Spheres for Superior Potassium Ion Batteries

Pan

Liu

Yang

et al. 2023

Adv Materials Technologies

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Graphite is an attractive anode material for low‐cost potassium‐ion batteries (PIBs), which are highly promising in addressing the urgent demand for large‐scale energy storage systems. However, the large volume variation of graphite during the potassiation/depotassiation may lead to poor long‐term stability, which is unfavorable for commercialization. Herein, highly graphitic hollow spheres (HGHS) are designed by using D‐ribose as the carbon source and Fe‐based catalysts to address these issues, and the effect of graphitization degree on potassium storage performance is explored, which is rarely reported. Fe‐based catalysts can promote graphitization of carbon layer and function as a hard template for manufacturing hollow and spherical architecture. HGHS possess a high porosity, which provides good contact when the liquid electrolyte infiltrates throughout the material. HGHS synthesized with a suitable amount of Fe‐based catalysts display highly graphitic hollow carbon spheres and show a superior potassium storage performance (264 mAh g−1 at 100 mA g−1). The hollow carbon sphere structure and highly graphitic carbon layer endows HGHS with outstanding stability, retaining 87% of the capacity after 500 cycles at 200 mA g−1. This study provides an effective strategy in designing highly graphitic hollow nanostructures for addressing the instability issues of graphite anode in PIBs.

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Biomass Separators as a “Lifesaver” for Safe and Long‐Life Lithium Metal Batteries

Bao,

Song,

Tian

et al. 2023

Chemistry A European J

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The growth of lithium dendrites and the shuttle of polysulfides in lithium metal batteries (LMBs) have hindered their development. In LMBs, the cathode and anode are separated by a separator, although this does not solve the battery's issues. The use of biomass materials is widespread for modifying the separator due to their porous structure and abundant functional groups. LMBs perform more electrochemically when lithium ions are deposited uniformly and polysulfide shuttling is reduced using biomass separators. In this review, we analyze the growth of lithium dendrite and the shuttle of polysulfide in LMBs, summarize the types of biomass separator materials and the mechanisms of action (providing mechanical barriers, promoting uniform deposition of metal ions, capturing polysulfides, shielding polysulfide). The prospect of developing new separator materials from the perspective of regulating ion transport and physical sieving efficiency as well as the application of advanced technologies such as synchrotron radiation to characterize the mechanism of action of biomass separators is also proposed.

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Modification of lithium sulfur batteries by sieving effect: Long term investigation of carbon molecular sieve

Cited by 14 publications

References 32 publications

Boosting Lean Electrolyte Lithium–Sulfur Battery Performance with Transition Metals: A Comprehensive Review

Boosting Lean Electrolyte Lithium–Sulfur Battery Performance with Transition Metals: A Comprehensive Review

Insight into Highly Graphitic Hollow Spheres for Superior Potassium Ion Batteries

Biomass Separators as a “Lifesaver” for Safe and Long‐Life Lithium Metal Batteries

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