N-Doping Induced Lattice Expansion of 1D Template Confined Ultrathin MoS2 Sheets to Significantly Enhance Lithium Polysulfides Redox Kinetics for Li–S Battery
學年 112
學期 1
出版(發表)日期 2023-08-15
作品名稱 N-Doping Induced Lattice Expansion of 1D Template Confined Ultrathin MoS2 Sheets to Significantly Enhance Lithium Polysulfides Redox Kinetics for Li–S Battery
作品名稱(其他語言)
著者 Minzhe Chen, Nan Wang, Wei Zhou, Xiaoyan Zhu, Qikai Wu, Ming-Hsien Lee, Dengke Zhao,* Shunlian Ning,* Maozhong An,* and Ligui Li*
單位
出版者
著錄名稱、卷期、頁數 Small 2023, 19, 2303015
摘要 Preparing MoS2-based materials with reasonable structure and catalytic activity to enhance the sluggish kinetics of lithium polysulfides (LiPSs) conversion is of great significance for Li–S batteries (LSBs) but still remain a challenge. Hence, hollow nanotubes composed of N-doped ultrathin MoS2 nanosheets (N-MoS2 NHTs) are fabricated as efficient S hosts for LSBs by using CdS nanorods as a sacrifice template. Characterization and theoretical results show that the template effectively inhibits the excessive growth of MoS2 sheets, and N doping expands the interlayer spacing and modulates the electronic structure, thus accelerating the mass/electron transfer and enhancing the LiPSs adsorption and transformation. Benefiting from the merits, the N-MoS2 NHTs@S cathode exhibits an excellent initial capacity of 887.8 mAh g−1 and stable cycling performances with capacity fading of only 0.0436% per cycle at 1.0 C (500 cycles). Moreover, even at high S loading that of 7.5 mg cm−2, the N-MoS2 NHTs@S cathode also presents initial excellent areal capacity of 7.80 mAh cm−2 at 0.2 C. This study offers feasible guidance for designing advanced MoS2-based cathode materials in LSBs.
關鍵字
語言 en
ISSN 1613-6810; 1613-6829
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度
國別 DEU
公開徵稿
出版型式 ,電子版
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