喷射薄膜沉积激光诱导基于石墨烯的新型微型超级电容器设备用于储能应用
Sourav Sain1, Suman Chowdhury2, Sayantan Maity3
1Department of Physics, School of Natural Sciences, Shiv Nadar Institution of Eminence (SNIoE), Deemed to be University, Delhi-NCR, Greater Noida, 201314, India.
Scientific reports
|July 15, 2024
概括
研究人员使用激光诱导的石墨烯和HfO2.2开发了先进的柔性微型超级电容器. 这些设备为实际应用提供了显著改进的能量存储和稳定性.
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
- 纳米技术 纳米技术
背景情况:
- 传统的储能系统在能源和功率密度方面存在局限性.
- 灵活的微型超级电容器 (MSC) 对便携式电子设备至关重要.
- 激光诱导石墨烯 (LIG) 为电极材料提供了一个有前途的平台.
研究的目的:
- 开发具有增强能量和功率密度的新型灵活微型超级电容器.
- 研究HfO2修改对基于LIG的电极的影响.
- 优化制造过程,以提高超级容量.
主要方法:
- 使用激光诱导石墨烯 (LIG) 制造间位电极 (IDE).
- 一步喷射等离子沉积HfO2到LIG电极上.
- 使用场发射扫描电子显微镜 (FESEM) 进行表征.
- 电化学性能测试,包括特定电容和周期稳定性.
主要成果:
- 在LIG纤维上的均HfO2涂层是通过喷雾实现的.
- 在5mV/s时,其特定电容为6.4mF/cm2,在0.04mA/cm2时为4.5mF/cm2.
- 与原始LIG相比,超级电容器性能增加了四倍.
- 卓越的循环稳定性,在5000个循环中保持97%的电容.
结论:
- 新型LIG-HfO2微型超级电容器显示显著提高了性能.
- 喷涂沉积方法是有效的,用于创建统一的HfO2涂层.
- 这些发现为实用,高性能灵活的储能解决方案铺平了道路.
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