一个超低温交流电过器
Chenguang Zhang1, Xin Jiao1, Yingyu Wang2
1School of Materials Science and Engineering, Tianjin Key Laboratory for Photoelectric Materials & Devices, Key Laboratory of Display Materials and Photoelectric Devices, Tianjin University of Technology, Tianjin, 300384, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|September 2, 2023
概括
这项研究引入了一种使用超级电容器的新型超低温交流电 (AC) 过器. 这种先进的过器可靠地在极寒条件下运行,克服了传统电解电容器的局限性.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 电化学 电化学 电化学
背景情况:
- 使用电解电容器 (AEC) 的传统交流电 (AC) 过器在超低温 (≤-30°C) 时表现不佳.
- 这种限制阻碍了电子设备在极寒环境中可靠运行.
研究的目的:
- 开发一种新型的超低温交流过器,在极寒条件下提高性能.
- 为了研究超级电容器的潜力,基于一个独特的混合结构,用于交流过应用.
主要方法:
- 制造一个高频超级电容器,采用一种共聚结合的空心碳洋-石墨烯混合结构.
- 超级电容器与低点电解质的整合.
- 在包括超低温在内的广泛温度范围内对过器性能进行表征.
主要成果:
- 超级电容器表现出优异的过能力和稳定的直流 (DC) 输出,低波动系数在-50°C至0°C之间.
- 混合结构表现出高电子导电性,高效的离子吸附/脱离和快速的离子扩散动力学.
- 开发的交流过器显示出高负相角,低消散因子,短电阻-电容时间常数 (τRC = 0.098 ms 在120 Hz) 和高容量保留在-30°C以下,优于AECs.
结论:
- 开发的基于新型超级电容器的超低温交流过器有效地克服了传统AEC的局限性.
- 这一进步是实现在极寒条件下可靠操作电子设备的重要一步.
- 具有共价键的空心碳洋-石墨烯混合结构对于实现卓越的低温性能至关重要.
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