没有粘合剂的全碳复合材料超级电容器
Sabreen Jarrar1, Shahzad Hussain2, Atta Ul Haq2
1Department of Physics, An-Najah National University, PO Box 7, Nablus, West Bank, Palestine †.
Nanotechnology
|April 23, 2024
概括
无粘合剂的碳纳米纤维和石墨烯纳米板块复合材料为超级电容器提供轻量级的高性能电极. 这种全碳材料增强了先进的储能应用的特定电容和能量密度.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 传统的超级电容器使用聚合物结合剂,增加重量和增加电阻.
- 开发轻量级,无粘合剂的电极对于下一代能源设备至关重要.
研究的目的:
- 使用碳纳米纤维 (CNF) 和石墨烯纳米板块 (GNPs) 制造和表征无粘合剂,全碳复合电极.
- 研究不同GNP度对复合电极的结构,形态和电化学性能的影响.
主要方法:
- 处理CNF和GNP的粉末,以创建混合复合材料.
- 在不同GNP度下分析结构,形态和电化学性质.
- 在1M和6M氧化 (KOH) 电解质中进行电化学测试.
主要成果:
- 特定容量 (Cs) 随着GNP度的增加而增加,达到120Fg-1在90%重量的GNP下 (比原始CNF增加5倍).
- 在6MKOH电解液中,最大的Cs达到189Fg-1.
- 使用90重%的GNP,最大能量密度为~20Wh kg-1和功率密度为340W kg-1.
结论:
- CNF和GNP之间的协同效应,以及导电网络,提高了电化学性能.
- 无粘合剂的全碳电极显示出先进的储能应用的巨大潜力.
- 这种复合材料为轻量级,高性能超级电容器提供了一个有希望的替代品.
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