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电VO2/碳纤维用于水性离子电池

Liying Yin¹, Zenglong Xu², Guangxu Yang²

¹School of Food Science and Engineering, Changchun University Changchun 130022 China.

|November 1, 2023

概括

研究人员开发了一种用于水性离子电池 (AZIB) 的3D二氧化/碳纤维复合物 (VO2@CPAN). 这种材料提高了导电性和稳定性,实现了323.2 mAh g-1的高容量和出色的循环保留,以实现更安全,更低成本的能源存储.

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:

水性离子电池 (AZIB) 对安全和经济高效的储能充满希望.
氧化瓦纳 (VO2) 是AZIBs的合适阴极材料,因为它具有道结构和多价值特性.
提高VO2的导电性和稳定性对于改善AZIB性能至关重要.

研究的目的:

为AZIB应用合成一个三维 (3D) 的二氧化/碳纤维复合物 (VO2@CPAN).
研究3D碳纤维网络对VO2的电化学性能的影响.
评估VO2@CPAN作为AZIBs的高性能阴极材料的潜力.

主要方法:

使用电回旋策略制造VO2@CPAN.
控制热处理以形成3D网络结构.
在AZIB中电极材料VO2@CPAN的电化学测试.

主要成果:

在VO2@CPAN中的3D碳纤维网络显著改善了VO2导电性,防止了聚合,并提高了稳定性.
VO2@CPAN在0.2 A g-1下实现了323.2 mA h g-1的高特异性容量,超过了纯VO2.
在 3000 个循环后,在 10 A g-1 的高电流密度下保持了 76.6% 的优异容量保留.

结论:

开发的3D VO2@CPAN复合材料是AZIBs的高效阴极材料.
集成的碳纤维网络是实现卓越电化学性能和长期稳定的关键.
这项工作为开发用于高性能水性能量存储的先进材料提供了有希望的途径.

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