用于超级电容器的ZIF-67衍生CoFe2O4-Fe颗粒的N-合多孔碳
Lulu Zheng1, Siyu Gao1, Shuaikang Yao1
1Liaoning Key Lab of Lignocellulose Chemistry and Biomaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
为高性能超级电容器合成了一种具有ZIF-67衍生的CoFe2O4-Fe颗粒的新型N-化碳材料. 这种复合材料实现了高的特异电容和能量密度,在10,000个循环中表现出极好的稳定性.
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:
- 先进的电极材料对于提高储能技术至关重要.
- 新型复合材料为更高的能量密度和更好的性能提供了潜力.
研究的目的:
- 制造和表征一种新型的N-化多孔碳复合物,其中含有ZIF-67衍生的二进制CoFe2O4-Fe颗粒.
- 评估复合材料作为超级电容器的电极材料的电化学性能.
主要方法:
- 一种基于Fe的奇托水凝与ZIF-67颗粒混合的热解.
- 使用各种技术进行表征,以评估材料特性和性能.
- 使用复合材料和活性炭 (AC) 制造一个不对称的超级电容器 (ASC).
主要成果:
- CoFe2O4-Fe@NC复合物表现出优异的电化学性能,这是由于粒子和N-doped碳之间的协同效应.
- 对于在700°C碳化的复合材料,在1A/g时达到3960.9F/g的特定电容.
- 该ASC装置在291.6W/kg的功率密度下提供了84.9Wh/kg的能量密度,并在10,000个循环后保持了94.9%的电容保留.
结论:
- 合成的CoFe2O4-Fe@NC复合材料是高性能超级电容器的一个有希望的材料.
- 这项研究为设计用于高效储能的先进电极材料提供了新的见解.
- 开发的复合材料显示了在储能设备中的实际应用潜力.
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