Interface engineering toward stable lithium–sulfur batteries

Guo, Yi; Niu, Qian; Pei, Fei; Wang, Qian; Zhang, Yun; Du, Liyu; Zhang, Yin; Zhang, Yunsheng; Zhang, Yueying; Fan, Ling; Zhang, Qianyu; Yuan, Lixia; Huang, Yunhui

doi:10.1039/d3ee04183b

Cited by 48 publications

(1 citation statement)

References 338 publications

(410 reference statements)

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“…Therefore, a certain amount of higher-order Mg polysulfide may have remained at the end of charging, similar to lithium–sulfur batteries. 47 Therefore, after the first cycle, the cathode and electrolyte may contain different higher-order magnesium polysulfides (MgS x ).…”

Section: Resultsmentioning

confidence: 99%

S@C composites constructed by a graded pore-making strategy for Mg–S batteries with outstanding rate performance

Xue,

Wang,

Qin

et al. 2024

New J. Chem.

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Section: Resultsmentioning

confidence: 99%

S@C composites constructed by a graded pore-making strategy for Mg–S batteries with outstanding rate performance

Xue,

Wang,

Qin

et al. 2024

New J. Chem.

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Hollow and Porous N‐Doped Carbon Framework as Lithium‐Sulfur Battery Interlayer for Accelerating Polysulfide Redox Kinetics

Zuo,

Zhen,

Liu

et al. 2024

Adv Funct Materials

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Lithium‐sulfur batteries (LSBs) have become one of the most powerful candidates for next‐generation battery technologies due to their high theoretical energy density and low cost. However, the notorious shuttle effect of soluble lithium polysulfides (LiPSs) and sluggish conversion reaction kinetics cause low sulfur utilization and inferior cycle life. Rational catalyst design on hierarchical pore structures and composition optimization is highly desired to realize synergetic enrichment, accommodation, and catalytic redox capacity of sulfur species. In this consideration, the hollow and porous N‐doped carbon framework is prepared, in which Co nanoparticles (NPs) are evenly embedded (denoted as Co‐HMCF) to modulate electron cloud density of carbons. Electrochemical tests and density functional theory (DFT) calculations demonstrate that Co‐HMCF could simultaneously deliver superior catalytic activity in accelerating LiPSs conversion as well as Li2S nucleation/decomposition to improve overall sulfur redox kinetics. Consequently, the Co‐HMCF interlayer significantly improves the battery performance, including high discharge capacity output (1538 mAh g−1 at 0.2 C), stable long‐term cycle (0.047% capacity decay per cycle for 800 cycles at 1.0 C), and exceptional rate capacity (582 mAh g−1 at 5.0 C).

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Phloroglucinol–2,6‐Diaminoanthraquinone as a Durable Redox Mediator for Enhancing Conversion Reaction Kinetics in Lithium‐Sulfur Batteries

Lai,

Manthiram

2024

Adv Funct Materials

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Lithium‐sulfur batteries, despite being a promising solution for next‐generation secondary batteries, require substantial efforts to overcome the challenges of sluggish sulfur redox kinetics, polysulfides shuttling, and Li metal instability before achieving practical viability. Conventional strategies that utilize metal catalysts or soluble redox mediators (RMs) are limited by either impractical producing processes or unsatisfactory service life. Herein, an electrochemically active organic material, phloroglucinol – 2,6‐diaminoanthraquinone (PG‐DAAQ) is synthesized through a green and facile polymerization process to better resolve these issues. Serving as an RM at the cathode, PG‐DAAQ exhibits enduring redox activity within the sulfur operating potential window, leading to enhanced redox kinetics and sulfur utilization. Remarkably, even without any metal elements, PG‐DAAQ exhibits an excellent affinity to polysulfides, thereby suppressing the shuttling and facilitating the formation of a more favorable solid‐electrolyte interface to stabilize Li deposition at the anode. As a result, Li‐S cells employing PG‐DAAQ show significantly enhanced cycling and rate performances than the control cells. Even with a low electrolyte‐to‐sulfur ratio of 6, pouch cells with PG‐DAAQ deliver a reversible discharge capacity of 821 mA h g−1 after 100 cycles at a C/10 rate.

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Interface engineering toward stable lithium–sulfur batteries

Abstract: Lithium-sulfur battery, one of the most potential high-energy-density rechargeable batteries, has obtained significant progress in overcoming challenges from both sulfur cathode and lithium anode. However, unstable multi-interfaces between electrodes and...

Cited by 48 publications

References 338 publications

S@C composites constructed by a graded pore-making strategy for Mg–S batteries with outstanding rate performance

S@C composites constructed by a graded pore-making strategy for Mg–S batteries with outstanding rate performance

Hollow and Porous N‐Doped Carbon Framework as Lithium‐Sulfur Battery Interlayer for Accelerating Polysulfide Redox Kinetics

Phloroglucinol–2,6‐Diaminoanthraquinone as a Durable Redox Mediator for Enhancing Conversion Reaction Kinetics in Lithium‐Sulfur Batteries

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