TiS2 nanoplates: A high-rate and stable electrode material for sodium ion batteries
TiS2 nanoplates: A high-rate and stable electrode material for sodium ion batteries
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DOI：
10.1016/j.nanoen.2015.12.028
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发表时间：
2016-02-01
期刊：
影响因子：
17.6
通讯作者：
Li, Yanguang
中科院分区：
文献类型：
--
作者：
Liu, Yuping;Wang, Hongtao;Li, Yanguang
由于钠资源丰富且价格低廉，室温钠离子电池在大规模储能应用方面具有巨大潜力。然而，它们未来的可行性将在很大程度上取决于高容量和稳定电极材料的开发。在这项研究中，我们报告薄的TiS 2纳米片作为一种可能的钠离子电池的阴极材料。这些纳米片具有纳米尺度和大的表面积。他们的夹层画廊是开放的边缘，提供方便的访问大的内部空间。电化学测量和多个非原位研究表明，TiS 2纳米片能够快速和可逆的Na+嵌入和脱嵌。它们提供接近完全Na+嵌入的大容量（186 mAh/g）、高倍率容量（类似于10 C下的100 mAh/g）以及在低和高电流倍率下的令人满意的循环稳定性。我们的研究表明，通过适当的纳米结构工程，二维层状材料作为钠离子电池电极材料可能具有很大的前景，能够以低成本实现快速和强大的能量存储。(C)2016爱思唯尔有限公司版权所有
Room temperature sodium-ion batteries are of great potential for large-scale energy storage applications because of the abundance and low cost of sodium resources. However, their future viability will largely hinge on the development of high-capacity and stable electrode materials. In this study, we report thin TiS2 nanoplates as a possible cathode material for sodium-ion batteries. These nanoplates possess nanoscale dimensions and large surface areas. Their interlayer galleries are open toward the edges, providing easy access to the large internal space. Electrochemical measurements and multiple ex-situ studies demonstrate that TiS2 nanoplates are capable of fast and reversible Na+ intercalation and deintercalation. They deliver a large capacity close to full Na+ intercalation (186 mAh/g), high rate capability (similar to 100 mAh/g at 10 C) and satisfactory cycling stability at both low and high current rates. Our study suggest that with proper nanostructure engineering, two-dimensional layered materials may hold great promise as sodium ion battery electrode materials to enable fast and robust energy storage at low costs. (C) 2016 Elsevier Ltd. All rights reserved.