Suppression of long-chain lithium polysulfide formation through a selenium-doped linear sulfur copolymer cathode for high-performance lithium–organosulfur batteries

Ren, Longtao; Qiao, Lu; Pato, Abdul Hameed; Liu, Jun; Wang, Yan; Lu, Xiwen; Zhao, Yajun; Wang, Qian; Liu, Wen; Xu, Haijun; Sun, Xiaoming

doi:10.1039/d3ta06959a

Cited by 1 publication

(1 citation statement)

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“…In addition to the spatial domain-limiting measure, the shuttling effect can also be preceded by enhancing the chemical anchoring of LiPSs to improve the availability of reactive sulfur [ 41 , 42 ]. Heteroatom doping such as nitrogen, sulfur, phosphorus, and boron in carbon or MXene-based materials can effectively enhance the chemisorption of LiPSs [ 43 , 44 , 45 , 46 , 47 ]. Transition metal sulfides, nitrides, and oxides provide efficient chemical anchoring of LiPSs while also improving the reaction kinetics and showing excellent performance in suppressing the shuttle effect [ 48 , 49 , 50 , 51 , 52 ].…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Vanadium Nitride-Modified Separator for High-Performance Lithium–Sulfur Batteries

Liu,

Zhang

et al. 2024

Nanomaterials

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Lithium–sulfur batteries (LSBs) are recognized as among the best potential alternative battery systems to lithium-ion batteries and have been widely investigated. However, the shuttle effect has severely restricted the advancement in their practical applications. Here, we prepare vanadium nitride (VN) nanoparticles grown in situ on a nitrogen-doped carbon skeleton (denoted as VN@NC) derived from the MAX phase and use it as separator modification materials for LSBs to suppress the shuttle effect and optimize electrochemical performance. Thanks to the outstanding catalytic performance of VN and the superior electrical conductivity of carbon skeleton derived from MAX, the synergistic effect between the two accelerates the kinetics of both lithium polysulfides (LiPSs) to Li2S and the reverse reaction, effectively suppresses the shuttle effect, and increases cathode sulfur availability, significantly enhancing the electrochemical performance of LSBs. LSBs constructed with VN@NC-modified separators achieve outstanding rate performance and cycle stability. With a capacity of 560 mAh g−1 at 4 C, it exhibits enhanced structural and chemical stability. At 1 C, the device has an incipient capacity of 1052.4 mAh g−1, and the degradation rate averaged only 0.085% over 400cycles. Meanwhile, the LSBs also show larger capacities and good cycling stability at a low electrolyte/sulfur ratio and high surface-loaded sulfur conditions. Thus, a facile and efficient way of preparing modified materials for separators is provided to realize high-performance LSBs.

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Section: Introductionmentioning

confidence: 99%

Multifunctional Vanadium Nitride-Modified Separator for High-Performance Lithium–Sulfur Batteries

Liu,

Zhang

et al. 2024

Nanomaterials

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show abstract

Suppression of long-chain lithium polysulfide formation through a selenium-doped linear sulfur copolymer cathode for high-performance lithium–organosulfur batteries

Abstract: Lithium–sulfur (Li–S) batteries have garnered significant attention as promising energy storage devices due to their high theoretical specific capacity and environmental sustainability. However, several challenges including the shuttling effect of...

Cited by 1 publication

References 56 publications

Multifunctional Vanadium Nitride-Modified Separator for High-Performance Lithium–Sulfur Batteries

Multifunctional Vanadium Nitride-Modified Separator for High-Performance Lithium–Sulfur Batteries

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