垂直对齐的超薄 CoNi-LDH@NiS@MXCF 柔性超级电容电极和氧气进化反应的核心外异构
Deyang Zhang1, Di Wang1, Binhe Feng1
1Henan Joint International Research Laboratory of New Energy Storage Technology, Xinyang Normal University, Xinyang 464000, P. R. China.
Inorganic chemistry
|December 5, 2024
概括
一种新的核心外异构电极材料证明了储能设备的卓越性能. 这种先进的材料提供了高容量,优良的稳定性和高效的氧气进化反应能力.
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:
- 开发先进的电极材料对于高性能储能系统至关重要.
- 碳纳米纤维 (CNFs) 提供出色的导电性和机械支持.
- 由于其独特的特性,MXene材料提高了电化学性能.
研究的目的:
- 合成和描述一种用于电化学能量储存的新型多层核心外异构结构.
- 研究CoNi-LDH,NiS,MXene和CNF对电化学性能的协同作用.
- 评估制造的电极对超级电容器和氧气演化反应的潜力.
主要方法:
- 电用于制备MXene涂层碳纳米纤维 (MXCF).
- 使用电化学沉积,在MXCF上创建了一个CoNi-LDH@NiS核心外结构.
- 电化学技术包括循环电压测量,静电电荷放电和电化学阻抗光谱用于性能评估.
主要成果:
- 合成的CoNi-LDH@NiS/MXCF电极在1Ag-1下表现出高特异电容1441.8Fg-1的高特异电容.
- 电极表现出极好的循环稳定性,在10,000个循环中保持高容量.
- 制造的超级电容器设备在0.8kW kg-1的功率密度下达到84.4Wh kg-1的能量密度.
- 该材料还显示了氧化演化反应 (OER) 的低超电位为128mV.
结论:
- 多层核心-外异构策略通过最大限度地提高材料利用率和改善动力学,有效地提高了电化学性能.
- CoNi-LDH,NiS,MXene和CNFs的组合产生了一种协同效应,用于优越的能量储存和催化活性.
- 这项工作为下一代储能设备和电催化剂提供了一个有前途的材料和制造战略.
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