Atomic Interlamellar Ion Path in High Sulfur Content Lithium-Montmorillonite Host Enables High-Rate and Stable Lithium-Sulfur Battery

Advanced Materials
Wei ChenJie Xiong

Abstract

Fast lithium ion transport with a high current density is critical for thick sulfur cathodes, stemming mainly from the difficulties in creating effective lithium ion pathways in high sulfur content electrodes. To develop a high-rate cathode for lithium-sulfur (Li-S) batteries, extenuation of the lithium ion diffusion barrier in thick electrodes is potentially straightforward. Here, a phyllosilicate material with a large interlamellar distance is demonstrated in high-rate cathodes as high sulfur loading. The interlayer space (≈1.396 nm) incorporated into a low lithium ion diffusion barrier (0.155 eV) significantly facilitates lithium ion diffusion within the entire sulfur cathode, and gives rise to remarkable nearly sulfur loading-independent cell performances. When combined with 80% sulfur contents, the electrodes achieve a high capacity of 865 mAh g-1 at 1 mA cm-2 and a retention of 345 mAh g-1 at a high discharging/charging rate of 15 mA cm-2 , with a sulfur loading up to 4 mg. This strategy represents a major advance in high-rate Li-S batteries via the construction of fast ions transfer paths toward real-life applications, and contributes to the research community for the fundamental mechanism study of loading-independent el...Continue Reading

References

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Citations

May 14, 2019·Advanced Materials·Sheng-Heng Chung, Arumugam Manthiram
Nov 20, 2019·Chemical Communications : Chem Comm·Ji-Yong EomChunjoong Kim
May 26, 2021·Advanced Materials·Yu LiMinghua Chen
Jun 10, 2021·Advanced Science·Ye LanIvan P Parkin
Feb 27, 2019·Nano-micro Letters·Luke HenczShanqing Zhang
Nov 26, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Yang DuRuowen Fu
Nov 30, 2019·ACS Applied Materials & Interfaces·Qi QiQuan-Hong Yang
Aug 12, 2021·Chemistry, an Asian Journal·Hui TangChengliang Wang
Nov 17, 2021·Advanced Science·Chen-Xi BiJia-Qi Huang

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