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调节用于先进水性离子电池的瓦纳酸电极材料中的氧气空缺

Ming Zhao¹, Shilong Li¹, Xiang Wu¹

¹School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, P.R. China.

|October 11, 2024

概括

在NH4V4O10纳米板中引入氧气空隙显著提高了水性离子电池的性能. 这种修改改善了离子传输,导致更高的容量和卓越的循环稳定性,用于先进的能量存储.

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:

瓦纳达特是水性离子电池 (AZIB) 的有希望的电极材料.
结构不稳定性和较差的离子/电子动力学限制了它们的电化学性能.
探索氧气空缺以增强离子运输和材料稳定性.

研究的目的:

为了提高AZIBs的瓦纳基电极的电化学性能.
为了研究氧气空缺对NH4V4O10纳米片的影响.
为了提高离子运输动力学和循环稳定性.

主要方法:

合成NH4V4O10纳米片与工程氧空缺 (NHVO-40).
在AZIBs中修改电极材料的电化学表征.
性能评估包括容量,速度能力和循环稳定性.

主要成果:

与原始NH4V4O10相比,NHVO-40样本显示了增强的活性位点.
组装的AZIB提供452.03mAhg-1的高容量在0.2Ag-1.1时.
在4000个循环后,在10 A g-1时实现了94.6%的异常容量保留.
该材料的能量密度为332.5Wh kg-1在70W kg-1的功率密度下保持1.1.

结论:

在NH4V4O10中引入氧气空缺是提高AZIB性能的有效策略.
增强的离子传输和稳定性有助于优越的电化学性能.
这项工作为AZIBs开发高性能瓦纳数据电极提供了有前途的途径.

关键词:

应用科学应用科学化学化学化学材料科学是一种材料科学.物理物理学物理

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