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Published on: August 5, 2013

溶热导向V2O5微球纳米粒子构建高性能水性离子电池

Xianghui Jia¹, Kaixi Yan¹, Yanzhi Sun¹

¹National Fundamental Research Laboratory of New Hazardous Chemicals Assessment and Accident Analysis, Institute of Applied Electrochemistry, Beijing University of Chemical Technology, Beijing 100029, China.

Materials (Basel, Switzerland)

|April 13, 2024

概括

为可充电水性离子电池合成了高度结晶的氧化 (V₂O₅) 微球. 这些材料在实际应用中显著提高体积能量密度和电化学性能.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
储能储能储能储能储能储能

背景情况:

可充电的水性离子电池具有成本效益和丰富的资源.
高体积能量密度对于实际的电池应用至关重要,但仍未得到充分研究.
开发先进的正极材料对于提高离子电池性能至关重要.

研究的目的:

为高性能离子电池合成高度结晶的V₂O₅微球.
为了提高阴极材料的体积能量密度和电化学性能.
为创建3D材料提供高效的途径,提高了自来水密度和稳定性.

主要方法:

无模板溶热合成自组装V₂O₅微球从纳米棒.
在水性离子电池系统中使用V₂O₅微球作为阴极材料.
电化学性能特征,包括特定容量,循环稳定性和速率能力.

主要成果:

在0.1 A g-1下实现了414.7 mAh的可逆特定容量.
证明了长期循环稳定性,在3000个循环后在2Ag-1时保持76.5%的容量.
报告了快速的离子传输,优秀的速率能力,并显著增加了自来水密度.

结论:

合成的V₂O₅微球是高性能水性离子电池的有希望的阴极材料.
开发的方法可以创建稳定的3D材料,具有卓越的电化学性能.
这项研究解决了在实际电池设计中对高体积能量密度的需求.

关键词:

在V2O5微球中,V2O5是微球.水性离子电池水性离子电池自己组装的自组装.溶解热法是一种溶解热法.

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