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三维高比例微阵列厚电极用于高速混合超级电容器.
Yapeng Zhang1, Hean Zhu1, Zeqi Nie1
1State Key Laboratory of Advanced Design and Manufacturing Technology for Vehicle, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, Hunan, China.
Journal of colloid and interface science
|July 10, 2024
概括
研究人员为混合超级电容器 (HSC) 开发了3D订购圆柱形阵列 (NiOCA) 电极. 这些先进的电极增强了便携式电子产品的能量储存,提供了更好的容量保留和稳定性.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 混合超级电容器 (HSC) 中的传统薄膜电极限制了能量密度.
- 增加电极厚度会导致机械不稳定性和低效的离子/电子传输.
- 稳定,三维 (3D) 订制的厚电极对于克服这些限制至关重要.
研究的目的:
- 为了开发一个新的制造工艺大面积,高面积比率3D订购厚电极.
- 使用这些先进的电极构建高性能混合超级电容器.
- 展示用于储能3D电极可扩展生产的潜力.
主要方法:
- 制造3D订购圆柱形阵列 (NiOCA) 电流采集器,使用光刻和化学沉积.
- 对于正电极,将-双金属氧化物 (NiCo-LDH) 置于NiOCA上.
- 使用 NiOCA/NiCo-LDH 阳性电极和 NiOCA/添加的多孔碳 (NPC) 负电极组装高温电池.
主要成果:
- 高压电机在电流密度范围为2至50 mA cm-2.2的范围内显示出55%的容量保留.
- 观察到异常的长期循环稳定性,在15000个循环后,在10mA cm-2.2下98.2%的容量保留.
- 制造过程显示出可定制性和良好的重复性.
结论:
- 开发的制造工艺使得可以创建3D订购的厚电极,用于高性能储能.
- 这种方法为混合超级电容器的先进电极的大规模生产提供了可行的途径.
- 该研究为便携式电子产品的下一代电源提供了创新的概念.
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