在碳材料中,兴奋剂使得低温电容保持在碳材料中
Anica B Pinongcos1, Xinzhe Xue1, Megan C Freyman2
1Department of Chemistry and Biochemistry, University of California Santa Cruz, 1156 High Street, Santa Cruz, California, 95064, USA. yatli@ucsc.edu.
概括
添加碳气凝在极寒条件下提供可靠的能量储存. 这些超级电容器在-40°C下保持96%的电容,对于极地和太空任务至关重要.
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:
- 有效的储能解决方案对于极地地区和太空等极端环境至关重要.
- 超级电容器需要在零度以下的温度下强大的性能来实现可靠的运行.
研究的目的:
- 开发和评估用于零度以下温度应用的先进储能材料.
- 为了研究化多层多层多孔碳气凝的低温性能.
主要方法:
- 用剂合的多尺度多孔碳气凝的合成.
- 在-40°C时对超级电容器进行电化学表征.
- 对材料属性的分析,包括含量和表面形态.
主要成果:
- 超级电容器在-40°C时实现了96%的容量保留.
- 在低温下记录的能量密度为1.43 Wh L−1.
- 增强的兴奋剂和增加的离子可访问的表面积与性能相关.
结论:
- 用气添加的碳气凝显示出特殊的低温超级电容性能.
- 材料设计策略可以克服极端寒冷的储能局限性.
- 这些发现对极地和太空探索应用具有重要意义.
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