Vanadium-based compounds for aqueous zinc ion batteries with excellent rate capability and cyclic stability

IF 4.5 3区化学 Q1 Chemical Engineering

Journal of Electroanalytical Chemistry Pub Date : 2023-09-01 DOI:10.1016/j.jelechem.2023.117636

Lei Zhao , Yongtao Tan , Yitong Sun , Haorui Liu , Nana Yang , Ning Mi

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引用次数: 0

Abstract

Zinc ion battery (ZIB) is becoming a research hotspot because of its high safety, low cost and environmental protection, and will become a promising new energy storage device. Vanadium-based compounds are widely investigated as positive materials because of their multivalency, rich crystal structure and high specific capacity. In this work, three vanadium-based compounds V₂O₅, V₂O₃ and VN samples are prepared by hydrothermal and solid-phase synthesis methods. The phase structure and purity of synthetic materials are demonstrated X-ray Diffraction (XRD). Morphology characterization shows that V₂O₅, V₂O₃ and VN samples have nanosheets, nanoflakes and nanoparticles structures, respectively. In addition, the electrochemical properties of V₂O₅, V₂O₃ and VN samples in ZIBs are systematically investigation. These three vanadium-based compounds all have great cycle stability and high-rate capabilities. This work provides guidance for the development of novel vanadium-based electrode materials and paves the way for the development of zinc ion storage.

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用于锌离子电池的钒基化合物具有优异的倍率性能和循环稳定性

锌离子电池以其高安全性、低成本、环保等优点成为研究热点，将成为一种极具发展前景的新型储能装置。钒基化合物因其多价性、丰富的晶体结构和高比容量等优点而被广泛用作正极材料。本文采用水热法和固相法制备了钒基化合物V2O5、V2O3和VN样品。用x射线衍射(XRD)表征了合成材料的相结构和纯度。形貌表征表明，V2O5、V2O3和VN样品分别具有纳米片、纳米片和纳米颗粒结构。此外，系统地研究了zbs中V2O5、V2O3和VN样品的电化学性能。这三种钒基化合物都具有良好的循环稳定性和高倍率能力。该工作为新型钒基电极材料的开发提供了指导，并为锌离子存储的发展铺平了道路。

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来源期刊

Journal of Electroanalytical Chemistry Chemical Engineering-General Chemical Engineering

CiteScore

7.50

自引率

6.70%

发文量

912

审稿时长

>12 weeks

期刊介绍： The Journal of Electroanalytical Chemistry is the foremost international journal devoted to the interdisciplinary subject of electrochemistry in all its aspects, theoretical as well as applied. Electrochemistry is a wide ranging area that is in a state of continuous evolution. Rather than compiling a long list of topics covered by the Journal, the editors would like to draw particular attention to the key issues of novelty, topicality and quality. Papers should present new and interesting electrochemical science in a way that is accessible to the reader. The presentation and discussion should be at a level that is consistent with the international status of the Journal. Reports describing the application of well-established techniques to problems that are essentially technical will not be accepted. Similarly, papers that report observations but fail to provide adequate interpretation will be rejected by the Editors. Papers dealing with technical electrochemistry should be submitted to other specialist journals unless the authors can show that their work provides substantially new insights into electrochemical processes.