Recent progress in organic Polymers-Composited sulfur materials as cathodes for Lithium-Sulfur battery

Liu, Kangfei; Zhao, Hongbin; Ye, Daixin; Zhang, Jiujun

doi:10.1016/j.cej.2021.129309

Cited by 74 publications

(27 citation statements)

References 103 publications

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“…Recently, organic compounds, on account of their lightweight and structural diversity, have drawn considerable attention as the host/interlayer materials for Li-S battery. [13,[22][23][24][25] The abundant functional groups in organic compounds can chemically adsorb LiPSs and restrain their shuttling to Li anode. For instance, ethylene diamine with amine radical or anthraquinone molecular with keto groups served as the chemical anchoring sites to capture LiPSs by providing lone pair of electrons to coordinate with lithium through Lewis acid-base interaction, resulting in high capacity retention.…”

Section: Introductionmentioning

confidence: 99%

Polysulfide Regulation by Hypervalent Iodine Compounds for Durable and Sustainable Lithium–Sulfur Battery

Wang

Liu

et al. 2022

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Herein, a type of hypervalent iodine compound—iodosobenzene (PhIO)—is proposed to regulate the LiPSs electrochemistry and enhance the performance of Li‐S battery. PhIO owns the practical advantages of low‐cost, commercial availability, environmental friendliness and chemical stability. The lone pair electrons of oxygen atoms in PhIO play a critical role in forming a strong Lewis acid–base interaction with terminal Li in LiPSs. Moreover, the commercial PhIO can be easily converted to nanoparticles (≈20 nm) and uniformly loaded on a carbon nanotube (CNT) scaffold, ensuring sufficient chemisorption for LiPSs. The integrated functional PhIO@CNT interlayer affords a LiPSs‐concentrated shield that not only strongly obstructs the LiPSs penetration but also significantly enhances the electrolyte wettability and Li+ conduction. The PhIO@CNT interlayer also serves as a “vice current collector” to accommodate various LiPSs and render smooth LiPSs transformation, which suppresses insulating Li2S2/Li2S layer formation and facilitates Li+ diffusion. The Li−S battery based on PhIO@CNT interlayer (6 wt% PhIO) exhibits stable cycling over 1000 cycles (0.033% capacity decay per cycle) and excellent rate performance (686.6 mAh g−1 at 3 C). This work demonstrates the great potential of PhIO in regulating LiPSs and provides a new avenue towards the low‐cost and sustainable application of Li−S batteries.

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Section: Introductionmentioning

confidence: 99%

Polysulfide Regulation by Hypervalent Iodine Compounds for Durable and Sustainable Lithium–Sulfur Battery

Wang

Liu

et al. 2022

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“…To deal with these problems, many methods were tried to enhance the electrochemical performance of lithium–sulfur batteries 20,21 . Among various strategies, the most useful method is to design perfect sulfur host materials to improve the electrochemical performance of lithium–sulfur batteries 22 . Therefore, it is important to develop suitable host materials to overcome the above issues (Table 1).…”

Section: Introductionmentioning

confidence: 99%

In situ load of sulfur species on hollow carbon spheres as advanced electrode for superior electrochemical activity

Yan-tao

2022

J of Chemical Tech & Biotech

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BACKGROUND Hollow carbon nanospheres (HCNS) were successfully prepared using silica as a template. After that, elemental sulfur particles were grown in situ on the surface of the hollow carbon nanospheres by a solution method to prepare HCNS/S composites. RESULTS The morphology and crystal structure of the samples were characterized by scanning electron microscopy and X‐ray diffraction. The electrochemical performance of the samples was tested by constant charge and discharge, cyclic voltammetry and electrochemical impedance spectra using coin 2032 half batteries. The electrochemical tests indicated that the as‐prepared HCNS/S composites exhibited an initial specific capacity of 1162 mA h g−1 at the current density of 0.2 C. CONCLUSION The electrochemical impedance spectra showed that the as‐prepared HCNS/S composites displayed superior electronic conductivity during electrochemical cycles. The employment of HCNS/S composites is beneficial for the improvement of electrochemical performance of lithium–sulfur batteries. © 2022 Society of Chemical Industry (SCI).

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“…However, although the development and research of Li–S batteries and Li-ion batteries were almost carried out at the same time, serious volume expansion, shuttle effect, low conductivity, and other problems of Li–S batteries have still restrained the shackles of the development of Li–S batteries . Therefore, according to the following experimental mechanism of Li–S batteries, the reasons for limiting its capacity can be found and solved , …”

Section: Introductionmentioning

confidence: 99%

“…During charging, the Li + of Li 2 S migrates directly from the cathode to the anode and reduces to metallic Li. Therefore, the key step that determines the electrochemical kinetics speed of the entire Li–S batteries is the migration and conversion process of LiPSs. ,− Inhibiting the dissolution and migration of LiPSs in the electrolyte can alleviate the shuttle effect and the actual capacity attenuation. Catalyzing the conversion of long-chain and soluble LiPSs to short-chain insoluble Li 2 S can accelerate the electrochemical kinetics of Li–S batteries and promote the rapid transfer of Li + .…”

Section: Introductionmentioning

confidence: 99%

Recent Breakthroughs in the Bottleneck of Cathode Materials for Li–S Batteries

Chai

et al. 2021

Energy Fuels

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The advantages of high theoretical specific capacity, low cost, and convenient processing of lithium–sulfur batteries (Li–S batteries) have promoted a new direction for the development of the battery industry and greatly increased the upper limit of application of energy storage materials. However, the volume expansion, shuttle effect, and weak conductivity of sulfur inhibit the development prospect of Li–S batteries. Herein, the latest research developments of sulfur composite cathode materials in Li–S batteries are reviewed, including but not limited to carbon-based materials, metal and metal compound materials, metal–organic frameworks and derivatives, and conductive polymers. The electrochemical performance of Li–S batteries can be greatly improved through modifying sulfur composite cathodes based on the characteristics of composite materials and the bottleneck of Li–S batteries. In addition, the modification and application of the existing anode materials of Li–S batteries are summarized, which provides the possibility to promote the further development of Li–S batteries.

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Recent progress in organic Polymers-Composited sulfur materials as cathodes for Lithium-Sulfur battery

Cited by 74 publications

References 103 publications

Polysulfide Regulation by Hypervalent Iodine Compounds for Durable and Sustainable Lithium–Sulfur Battery

Polysulfide Regulation by Hypervalent Iodine Compounds for Durable and Sustainable Lithium–Sulfur Battery

In situ load of sulfur species on hollow carbon spheres as advanced electrode for superior electrochemical activity

Recent Breakthroughs in the Bottleneck of Cathode Materials for Li–S Batteries

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