Sulfur encapsulation by MOF-derived CoS<sub>2</sub> embedded in carbon hosts for high-performance Li–S batteries

Zhang, Na; Yang, Yao; Feng, Xinran; Yu, Seung‐Ho; Seok, Jeesoo; Muller, David A.; Abruña, Héctor D.

doi:10.1039/c9ta06947j

Cited by 92 publications

(50 citation statements)

References 73 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…observed the distribution of S in various types of carbon/S composites through cryo‐STEM and demonstrated that uniform S infiltration and dispersion through the melt infusion method was easier in activated porous carbon hosts than in nonactivated porous carbon, hollow carbon spheres, and carbon nanotubes (Figure 7B). 62 …”

Section: Characterization Of Catalytic Mechanismmentioning

confidence: 99%

Demystifying the catalysis in lithium–sulfur batteries: Characterization methods and techniques

Geng

Hua

Wang

et al. 2021

SusMat

View full text Add to dashboard Cite

Lithium-sulfur (Li-S) batteries are promising next-generation energy storage systems with ultrahigh energy density. However, the intrinsic sluggish "solidliquid-solid" reaction between S 8 and Li 2 S causes unavoidable shuttling of polysulfides, severely limiting the practical energy density and cycling performance. Recently, the catalysis process has been introduced for the sulfur redox reaction to accelerate the conversion of polysulfides, providing a positive remedy for the polysulfides shuttling. Nevertheless, in-depth understanding of the catalyst evaluation criteria and catalytic mechanism still lies in the "black box", and precise characterization technique is the key to unlock this puzzle. In this review, we provide a comprehensive overview of characterization techniques on the catalyst in Li-S batteries from two aspects of catalytic performance and catalytic mechanism, highlighting their significance and calling for more efforts to develop precise and fast techniques for Li-S catalysis. Moreover, we envision the future development of characterization for better understanding the catalysis toward practical Li-S battery.

show abstract

Section: Characterization Of Catalytic Mechanismmentioning

confidence: 99%

Demystifying the catalysis in lithium–sulfur batteries: Characterization methods and techniques

Geng

Hua

Wang

et al. 2021

SusMat

View full text Add to dashboard Cite

show abstract

“…[11] A great number of efforts have been focused on improving the performance of diaphragm [12] and optimizing the cathode matrix to avoid the shuttle effect of PSs and improve the safety of batteries. [13][14][15] Ideal cathode materials could provide suitable space for the fixation of PSs, enhance the electrical conductivity of active substances and alleviate the volume expansion in discharge process. [16][17][18][19][20][21] In addition, the polar materials can efficiently anchor polysulfides [22][23][24] and the effective catalysts contribute to the redox conversion of them.…”

mentioning

confidence: 99%

Cationic Covalent‐Organic Framework as Efficient Redox Motor for High‐Performance Lithium–Sulfur Batteries

Liu

Chen

Wang

et al. 2020

Small

View full text Add to dashboard Cite

The shuttle effect of soluble lithium polysulfides (LiPSs) leads to the rapid decay of sulfur cathode, severely hindering the practical applications of lithium‐sulfur (Li‐S) batteries. To this point, a covalent‐organic framework (COF) with proper cationic sites, which can be utilized as the cathode host of high‐performance Li–S batteries, is reported. The chemical sulfur anchoring within micropores effectively suppresses the dissolution of LiPSs into the electrolyte. During the discharge step, the cationic sites can accept electrons from anode and deliver them to polysulfides to facilitate the polysulfides' disintegration. Meanwhile, the cationic sites can receive electrons from polysulfides and then send them to the anode during the charge process, which promotes the polysulfides oxidation. Thus, both experiments and computational modeling show that the cationic COF can effectively inhibit the shuttle effect of LiPSs and improve the batteries' performances. Compared with electrically neutral COFs, the cationic COF‐based batteries show much better cycling stability even at high current density, for instance, a high specific capacity of 468 mA h g−1 is retained after 300 cycles at a current density of 4.0 C.

show abstract

“…[1][2][3][4][5] However, the issues related to dissolution of polysulfide during charge and discharge are the main obstacles to the commercialization of LiÀ S batteries. [6][7][8][9] To solve these problems, many groups have focused on the application of porous carbons for LiÀ S batteries. Ever since Ji et al [10] demonstrated the potential of S/CMK-3 (obtained by the melt-diffusion method) for high-capacity applications, many researchers have focused on the fabrication of S/C composites.…”

Section: Enhancing the Of Performance Of Lithium-sulfur Batteries Thrmentioning

confidence: 99%

Enhancing the of Performance of Lithium‐Sulfur Batteries through Electrochemical Impregnation of Sulfur in Hierarchical Mesoporous Carbon Nanoparticles

et al. 2020

Self Cite

View full text Add to dashboard Cite

Hierarchical mesoporous carbon was studied as a key material for enhancing sulfur utilization in Li−S batteries. Commonly, thermal sulfur infiltration into mesoporous carbon was a representative method for S−C composites; however, these had some problems such as pore blocking or nonuniform deposition of sulfur. Electrochemical sulfur impregnation without chemical or thermal infiltration reduced the preprocess time and enabled efficient polysulfide diffusion into the carbon pores. As the soluble polysulfides are smaller and more mobile than solid‐state sulfur, they could be physically or chemically adsorbed into the pores of the carbon additives. This approach enhanced the cycle stability and rate performance of the batteries. This study will provide an efficient and economic use of porous carbons in the Li−S battery field.

show abstract

Sulfur encapsulation by MOF-derived CoS₂ embedded in carbon hosts for high-performance Li–S batteries

Abstract: The superior performance of S/ZIF-derived CoS2 embedded in a carbon framework originates from both physical confinement of sulfur inside the host and strong chemical interactions.

Cited by 92 publications

References 73 publications

Demystifying the catalysis in lithium–sulfur batteries: Characterization methods and techniques

Demystifying the catalysis in lithium–sulfur batteries: Characterization methods and techniques

Cationic Covalent‐Organic Framework as Efficient Redox Motor for High‐Performance Lithium–Sulfur Batteries

Enhancing the of Performance of Lithium‐Sulfur Batteries through Electrochemical Impregnation of Sulfur in Hierarchical Mesoporous Carbon Nanoparticles

Contact Info

Product

Resources

About

Sulfur encapsulation by MOF-derived CoS2 embedded in carbon hosts for high-performance Li–S batteries

Abstract: The superior performance of S/ZIF-derived CoS2 embedded in a carbon framework originates from both physical confinement of sulfur inside the host and strong chemical interactions.

Cited by 92 publications

References 73 publications

Demystifying the catalysis in lithium–sulfur batteries: Characterization methods and techniques

Demystifying the catalysis in lithium–sulfur batteries: Characterization methods and techniques

Cationic Covalent‐Organic Framework as Efficient Redox Motor for High‐Performance Lithium–Sulfur Batteries

Enhancing the of Performance of Lithium‐Sulfur Batteries through Electrochemical Impregnation of Sulfur in Hierarchical Mesoporous Carbon Nanoparticles

Contact Info

Product

Resources

About

Sulfur encapsulation by MOF-derived CoS₂ embedded in carbon hosts for high-performance Li–S batteries