边缘富集的 MoS2 作为水性 Zn 离子电池的高性能阴极

IF 5.1 4区材料科学 Q2 ELECTROCHEMISTRY

Batteries & Supercaps Pub Date : 2024-08-03 DOI:10.1002/batt.202400419

Mengfan Niu, Falian Wan, Wenli Xin, Lei Zhang, Xilin Xiao, Hui Zhang, Zichao Yan, Zhiqiang Zhu

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引用次数: 0

摘要

可充电锌离子水电池（AZIBs）具有成本低、安全性高和环保等优点，在储能领域有着广阔的应用前景。然而，由于多价 Zn2+ 迁移的插层动力学较慢，因此很难找到合适的阴极。在此，具有边缘富集特征的 HNO3 蚀刻 MoS2 被证明是一种很有前途的高性能 AZIB 阴极。高度暴露的边缘具有优异的电化学活性，不仅能为储锌提供更多的反应位点，还能加速反应动力学。因此，边缘富集的 MoS2 阴极在 0.1 A g-1 条件下显示出更高的比容量（187 mAh g-1）和出色的循环性能（在 1 A g-1 条件下循环 700 次后容量保持率为 89%）。

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Edge-enriched MoS2 as a high-performance cathode for aqueous Zn-ion batteries

Rechargeable aqueous zinc ion batteries (AZIBs) with the advantages in low cost, high safety, and environmental friendliness have broad application prospects in the field of energy storage. However, the slow intercalation kinetics of multivalent Zn2+ migration make it hard to find a suitable cathode. Herein, HNO3 etched MoS2 with edge-enriched feature is proved to be a promising cathode for high-performance AZIBs. The highly exposed edges with superior electrochemical activity can not only offer more reactive sites for zinc storage but also accelerate the reaction kinetics. As a result, the edge-enriched MoS2 cathode exhibited higher specific capacity of 187 mAh g−1 at 0.1 A g−1 and outstanding cycling performance (89% capacity retention after 700 cycles at 1 A g−1).

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来源期刊

Batteries & Supercaps Multiple-

CiteScore

8.60

自引率

5.30%

发文量

223

期刊介绍： Electrochemical energy storage devices play a transformative role in our societies. They have allowed the emergence of portable electronics devices, have triggered the resurgence of electric transportation and constitute key components in smart power grids. Batteries & Supercaps publishes international high-impact experimental and theoretical research on the fundamentals and applications of electrochemical energy storage. We support the scientific community to advance energy efficiency and sustainability.