通过热解沉积优化二硫化钨以改进锌离子电池

IF 2.6 4区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

ChemNanoMat Pub Date : 2024-09-18 DOI:10.1002/cnma.202400426

Yiting Wang, Xinran Zhao, Ruirui Cao, Jun Yang

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引用次数: 0

摘要

阴极材料的选择和优化对于提高锌离子水电池的性能至关重要。在这项工作中，通过将硫磺粉和多巴胺以四种不同的质量比结合在一起，创造出了不同的活性材料。最终获得了新型掺氮碳/WS2。通过优化载多巴胺的钨离子前体和硫磺粉（1:2、1:4、1:6 和 1:8），四种样品呈现出不同的形态。结果表明，N-C/WS2-6 型锌离子电池的比容量最高，在 2.0 A/g 下首次放电时为 120.0 mAh/g，循环 2500 次后为 78.0 mAh/g，容量保持率为 65%，具有较好的综合性能。N-C/WS2-6 阴极的反应动力学特性表明，增强的伪电容行为促进了 Zn2+ 的扩散。

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Optimized Tungsten Disulfide via Pyrolytic Deposition for Improved Zn-ion Batteries

The selection and optimization of cathode materials are crucial for enhancing the performance of aqueous zinc-ion batteries. In this work, different active materials were created by combining sulphur powder and polydopamine in four different mass ratios. The novel N-doped carbon/WS2 is obtained. Thanks to the optimization of the dopamine-carrying tungsten ion precursor and sulfur powder (1:2, 1:4, 1:6 and 1:8), the four samples exhibited diffenert morphology. The N-C/WS2-6-based zinc ion batteries with the highest specific capacity, 120.0 mAh/g in the first discharge at 2.0 A/g, and 78.0 mAh/g after 2500 cycles, with a capacity retention of 65%, had a relatively good overall performance, according to the results. The reaction kinetics characteristics of the N-C/WS2-6 cathode reveal that enhanced pseudocapacitive behavior facilitates the diffusion of Zn2+

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来源期刊

ChemNanoMat Energy-Energy Engineering and Power Technology

CiteScore

6.10

自引率

2.60%

发文量

236

期刊介绍： ChemNanoMat is a new journal published in close cooperation with the teams of Angewandte Chemie and Advanced Materials, and is the new sister journal to Chemistry—An Asian Journal.