2D Space-Confined Synthesis of Few-Layer MoS2 Anchored on Carbon Nanosheet for Lithium-Ion Battery Anode,ACS Nano

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2D Space-Confined Synthesis of Few-Layer MoS2 Anchored on Carbon Nanosheet for Lithium-Ion Battery Anode
ACS Nano ( IF 15.8 ) Pub Date : 2015-03-24 00:00:00 , DOI: 10.1021/nn506850e
Jingwen Zhou ₁ , Jian Qin ₁ , Xiang Zhang ₁ , Chunsheng Shi ₁ , Enzuo Liu _{1,

2} , Jiajun Li ₁ , Naiqin Zhao _{1,

2} , Chunnian He _{1,

2}

Affiliation

A facile and scalable 2D spatial confinement strategy is developed for in situ synthesizing highly crystalline MoS₂ nanosheets with few layers (≤5 layers) anchored on 3D porous carbon nanosheet networks (3D FL-MoS₂@PCNNs) as lithium-ion battery anode. During the synthesis, 3D self-assembly of cubic NaCl particles is adopted to not only serve as a template to direct the growth of 3D porous carbon nanosheet networks, but also create a 2D-confined space to achieve the construction of few-layer MoS₂ nanosheets robustly lain on the surface of carbon nanosheet walls. In the resulting 3D architecture, the intimate contact between the surfaces of MoS₂ and carbon nanosheets can effectively avoid the aggregation and restacking of MoS₂ as well as remarkably enhance the structural integrity of the electrode, while the conductive matrix of 3D porous carbon nanosheet networks can ensure fast transport of both electrons and ions in the whole electrode. As a result, this unique 3D architecture manifests an outstanding long-life cycling capability at high rates, namely, a specific capacity as large as 709 mAh g^–1 is delivered at 2 A g^–1 and maintains ∼95.2% even after 520 deep charge/discharge cycles. Apart from promising lithium-ion battery anode, this 3D FL-MoS₂@PCNN composite also has immense potential for applications in other areas such as supercapacitor, catalysis, and sensors.

中文翻译：

锂离子电池阳极固定在碳纳米片上的多层MoS _2的二维空间受限合成

开发了一种简便且可扩展的2D空间限制策略，用于原位合成固定在3D多孔碳纳米片网络（3D FL-MoS ₂ @PCNNs）上的几层（≤5层）的高结晶MoS ₂纳米片作为锂离子电池阳极。在合成过程中，采用立方NaCl颗粒的3D自组装不仅充当指导3D多孔碳纳米片网络生长的模板，而且还创建了2D受限的空间以实现多层MoS ₂的构建纳米片牢固地铺设在碳纳米片壁的表面上。在最终的3D架构中，MoS ₂表面之间的紧密接触碳纳米片可以有效避免MoS ₂的聚集和再堆积，并显着增强电极的结构完整性，而3D多孔碳纳米片网络的导电基质可以确保整个电极中电子和离子的快速传输。结果，这种独特的3D架构在高速率下表现出出色的长寿命循环能力，即在2 A g ^–1下可提供高达709 mAh g ^–1的比容量，即使在深520度后仍可维持约95.2％的比容量。充电/放电周期。除了有希望的锂离子电池阳极外，这种3D FL-MoS ₂ @PCNN复合材料在超级电容器，催化和传感器等其他领域的应用也具有巨大的潜力。

更新日期：2015-03-24

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