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作为先进的离子混合电容器的阳极材料的S/N联合合超薄TiO2纳米板

Yuzhu Li¹, Qing Lan¹, Yuanfei Gao¹

¹College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.

Molecules (Basel, Switzerland)

|September 28, 2024

概括

超薄的二氧化 (TiO2) 纳米板,增强了硫,和碳涂层,显示了离子混合电容器的性能改善. 这种新型材料为先进的能量存储提供了更高的容量和能量密度.

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
纳米技术纳米技术

背景情况:

解剖氧化 (TiO2) 是离子混合电容器 (SIC) 的一个有希望的,具有成本效益的阳极材料.
关键的局限性包括电导率差和可逆容量低,阻碍了实际应用.
开发提高TiO2电化学性能的策略对于SIC技术至关重要.

研究的目的:

为了合成超薄的TiO2纳米板.
为了提高TiO2的电化学动力学和可逆能力,用于SIC.
为了研究硫和联合兴奋剂与碳涂层对TiO2性能的协同效应.

主要方法:

超薄TiO2纳米板的热水合成.
硫和的TiO2.2的联合化.
化TiO2纳米板 (SN-TiO2/C) 的碳涂层.
在SIC中用SN-TiO2/C作为阳极材料的电化学表征.

主要成果:

与未使用片的TiO2.2相比,SN-TiO2/C显著提高了电化学动力学和可逆能力.
硫和的联合兴奋剂创造了氧气空缺和活跃点,加速了纳离子扩散.
碳涂层在循环过程中确保了稳定的电子转移,提高了耐用性.
在SN-TiO2/C//AC SIC实现了335.3mAhg-1在0.1Ag-1和148.3mAhg-1在15Ag-1的高容量.
一个令人印象深刻的177.9Wh kg-1的能量密度是由SIC.提供.

结论:

与碳涂层配合的协同硫和联合剂有效地提高了SIC的TiO2阳极的性能.
开发的SN-TiO2 / C材料展示了高性能离子混合电容的潜力.
这一战略为改善储能材料的反应动力学提供了一条途径.

关键词:

在TiO2纳米板上.具有高电化学动力学.离子电容器中的离子电容器硫和的联合兴奋剂是硫和的联合兴奋剂.

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