使用结合多电解质和Ti3C2TxMXene的水性不对称假电容具有高面积能量和功率
Benjamin Rui Peng Yip1,2, Chaofan Chen3, Yan Jiang1,2
1Departments of Chemistry and Chemical & Biomolecular Engineering, National University of Singapore, Singapore, Singapore.
Nature communications
|August 26, 2025
概括
研究人员开发了一种新型的固态合聚电解质,用于高率伪电容器. 这种材料能提供更高的功率密度和能量储存,
科学领域:
- 材料科学
- 电化学
- 能量储存
背景情况:
- 伪电容器具有高功率密度,但受到正极材料的限制.
- 传统的电双层电容器的功率密度高于当前的伪电容器.
- 开发高率正伪电容材料对于提高全细胞伪电容器性能至关重要.
研究的目的:
- 报告一种新的固态合聚电解质,用于高速伪电容器应用.
- 调查多电解质作为正极的电荷储存机制和性能.
- 使用这种材料来证明高性能全细胞伪电容器.
主要方法:
- 固态合聚电解质的合成和表征.
- 在Swagelok电池中作为正电极的多电解质的制造和电化学测试.
- 用Ti3C2Tx负电极组装和评估一个全细胞伪电容器.
主要成果:
- 结合的多电解质通过共离子脱吸机制表现出高电荷储存率.
- 电极在 100 A g-1 时保持 70% 的电容,并显示出出色的循环稳定性 (100,000 个循环).
- 一个全电池伪电容器实现了1.5 V,160 mW cm−2的面积功率和71 μWh cm−2的面积能量,运行高达50 A g−1.
结论:
- 开发的固态合聚电解质克服了现有的正极材料的局限性.
- 伪电容器具有很高的面积能量和功率密度,适用于苛刻的应用.
- 无添加剂的水制造工艺增强了芯片和可穿戴能源存储的潜力.
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