A Ceramic-Based Separator for High-Temperature Supercapacitors
A Ceramic-Based Separator for High-Temperature Supercapacitors
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用于高温超级电容器的陶瓷隔膜
DOI：
10.1002/ente.201700438
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发表时间：
2018
影响因子：
3.8
通讯作者：
Yongsheng Chen
中科院分区：
文献类型：
--
作者：
Bin Qin;Yu Han;Yuxin Ren;Dong Sui;Ying Zhou;Miao Zhang;Zhenhe Sun;Yanfeng Ma;Yongsheng Chen
目前，超级电容器存在着工作温度受限的缺点，主要原因是隔膜的热稳定性差，严重阻碍了其在高温下的应用。在这项工作中，报道了一种简单而通用的高温陶瓷基隔板的制造方法。已经证明，这种隔板可以承受超过350 °C而没有任何收缩。通过使用这样的隔板制造的超级电容器可以在高达120 °C下有效地操作，并且即使在2.5V操作电压下9000次循环之后，它们的电容仍然保持其初始性能的大约88%。 据我们所知，这是第一次报道具有如此高的热稳定性的隔板。
Currently, supercapacitors have the shortcoming of limited operation temperature mainly owing to the low thermal stability of separators, which seriously hinder their application at high temperatures. In this work, a simple and universal method for the fabrication of high‐temperature standing ceramic‐based separators is reported. It was demonstrated that such a separator can withstand over 350 °C without any shrinkage. Supercapacitors fabricated by using such separators can be operated at as high as 120 °C efficiently and even after 9000 cycles at 2.5 V operation voltage, their capacitance still retained approximately 88 % of their initial performance. To the best of our knowledge, this is the first report of a separator with such high thermal stability.