一锅法合成1T MoS2/MWCNT杂化物增强锌离子存储

IF 2.5 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Yuting Wang, Zemin Zhang, Mingxue Li
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引用次数: 3

摘要

二维过渡金属二硫族化合物被认为是锌离子的理想宿主。本文提出了一种简单的水热法制备金属相(1T相)MoS2/多壁碳纳米管(MWCNT)杂化物作为锌离子电池(ZIBs)的正极材料。由于相工程的应用以及1T MoS2纳米片和MWCNT骨架之间的协同作用,所制备的杂化物的锌离子转移动力学显著加快,从而在室温和低温下提高了电化学性能。在0.1 a g−1下进行100次循环后,混合电极可提供161.5 mAh g−1的高可逆容量,并具有良好的循环稳定性,在1 a g−2下进行500次循环后所需的容量保持率为84.6%。此外,还揭示了其在低温气氛中增强的锌离子存储能力。这项工作不仅为挤压ZIBs中MoS2的相工程价值提供了一种有效的方法,而且揭示了MoS2基复合材料在低温储能器件中的巨大潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
One-pot synthesis of 1T MoS2/MWCNT hybrids for enhanced zinc-ion storage
Two-dimensional transition metal dichalcogenides are regarded as the ideal hosts for zinc-ions. Herein, a facile hydrothermal method is proposed to fabricate the metallic phase (1T phase) MoS2/multi-walled carbon nanotube (MWCNT) hybrids serving as the cathode materials for zinc-ion batteries (ZIBs). By virtue of the exertion of phase engineering and the synergy between the 1T MoS2 nanosheets and MWCNT framework, the transfer kinetics of zinc-ions of the prepared hybrid are remarkably accelerated, leading to boosted electrochemical properties at both room temperature and low temperatures. The hybrid electrode delivers a high reversible capacity of 161.5 mAh g−1 after 100 cycles at 0.1 A g−1, and good cycling stability with a desired capacity retention of 84.6% over 500 cycles at 1 A g−1. Furthermore, its boosted capability of zinc-ion storage in a low-temperature atmosphere is revealed. This work not only provides an effective way to squeeze the values of phase engineering of MoS2 in ZIBs, but also reveals the great potential of MoS2-based composites in low-temperature energy storage devices.
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来源期刊
Nano Futures
Nano Futures Chemistry-General Chemistry
CiteScore
4.30
自引率
0.00%
发文量
35
期刊介绍: Nano Futures mission is to reflect the diverse and multidisciplinary field of nanoscience and nanotechnology that now brings together researchers from across physics, chemistry, biomedicine, materials science, engineering and industry.
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