Two-dimensional architecture of N,S-codoped nanocarbon composites embedding few-layer MoS2 for efficient lithium storage,RSC Advances

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Two-dimensional architecture of N,S-codoped nanocarbon composites embedding few-layer MoS2 for efficient lithium storage
RSC Advances ( IF 3.9 ) Pub Date : 2024-07-22 , DOI: 10.1039/d4ra04251d
Jintao Ren ₁ , Dandan Yang ₁ , Lei Chen ₁ , Zhong-Yong Yuan ₁

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The exploration and advancement of highly efficient anode materials for lithium-ion batteries (LIBs) are critical to meet the growing demands of the energy storage market. In this study, we present an easily scalable synthesis method for the one-pot formation of few-layer MoS₂ nanosheets on a N,S dual-doped carbon monolith with a two-dimensional (2D) architecture, termed MoS₂/NSCS. Systematic electrochemical measurements demonstrate that MoS₂/NSCS, when employed as the anode material in LIBs, exhibits a high capacity of 681 mA h g⁻¹ at 0.2 A g⁻¹ even after 110 cycles. The exceptional electrochemical performance of MoS₂/NSCS can be attributed to its unique porous 2D architecture. The few-layer MoS₂ sheets with a large interlayer distance reduce ion diffusion pathways and enhance ion mobility rates. Additionally, the N,S-doped porous carbon matrix not only preserves structural integrity but also facilitates electronic conductivity. These combined factors contribute to the reversible electrochemical activities observed in MoS₂/NSCS, highlighting its potential as a promising anode material for high-performance LIBs.

中文翻译：

嵌入几层MoS2的N，S共掺杂纳米碳复合材料的二维结构，用于高效锂存储

锂离子电池（LIB）高效负极材料的探索和进步对于满足储能市场不断增长的需求至关重要。在这项研究中，我们提出了一种易于扩展的合成方法，用于在具有二维（2D）结构的N,S双掺杂碳整体上一锅形成几层MoS ₂纳米片，称为MoS ₂ /NSCS。系统电化学测量表明，当MoS ₂ /NSCS用作LIB中的阳极材料时，即使在110次循环后，在0.2 A g ^-1下仍表现出681 mA hg ^-1的高容量。 MoS ₂ /NSCS 卓越的电化学性能可归因于其独特的多孔二维结构。具有大层间距离的少层MoS ₂片减少了离子扩散路径并提高了离子迁移率。此外，N,S掺杂的多孔碳基体不仅保持了结构完整性，而且还促进了电子传导性。这些综合因素促成了在 MoS ₂ /NSCS 中观察到的可逆电化学活性，凸显了其作为高性能 LIB 阳极材料的潜力。

更新日期：2024-07-22

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