铜氧化物黄微球,具有优异的电容和循环性能,用于电色超级电容器
Yuanhaobo Yang1, Biao Chen1, Yongbo Zhang2
1College of Biomass Science and Engineering, National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China.
ACS applied materials & interfaces
|August 3, 2024
概括
铜氧化物黄微球 (CVO) 和Na2V6O16·3H2O纳米线 (NVO) 结合在一起,创建了先进的电色超级电容器. 这种复合材料显著改善了基于V2O5的设备的能量储存和循环稳定性.
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:
- 氧化 (V2O5) 对于电色超级电容器来说是有前途的,但其电导率低,循环能力差.
- 这些局限性阻碍了V2O5在储能装置中的实际应用.
研究的目的:
- 提高V2O5基材料的电化学性能和长期稳定性,用于电色超级电容器.
- 开发一种新型复合材料,将V2O5合铜,并将其与Na2V6O16·3H2O纳米线集成.
主要方法:
- 通过溶剂热处理和回火,合成铜氧化物黄微球 (CVO).
- 使用CVO和Na2V6O16·3H2O纳米线 (NVO) 形成球状线网络结构,以创建CVO/NVO复合材料.
- 使用CVO/NVO复合材料组装和测试完全无机固态电色超级电容器 (ECSC).
主要成果:
- 该CVO/NVO复合物表现出高特异电容39.2mFcm−2的高特异电容,在7500个循环后保持84%.
- 组装的ECSC表现出明显的颜色变化 (ΔE* = 37) 和优异的能量储存 (18.4 mF·cm−2).
- 这些设备显示出出色的循环稳定性,在10,000个循环后保持89%的电容.
结论:
- 开发的CVO/NVO复合材料显著提高了V2O5.5的导电性,电容和循环稳定性.
- 独特的球线网络结构优化了氧化还原点和基板结合,从而提高了设备的性能.
- 这项工作为基于V2O5的先进电色储能器件提供了一个有希望的途径.
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