摘要
Among energy storage devices,electrochemical capacitors(ECs)possessing ultrahigh power density and long-term stability have attracted numerous research interests and thus enriched our arsenal when coping with specific issues[1-10].While a large number of aqueous ECs could run well at room temperature,demand for their survival and operation under thermal extremes is rising.For example,military-grade electrochemical energy storage(EES)devices are expected to operate from-40 to 60℃ and equipment for cold climates or high altitudes can experience temperatures as low as—60℃[11].
具有低温工作性能是超级电容器应对特殊工作环境(高海拔/高纬度)的重要保障,也有利于其在更多领域中的应用.本文首先制备了一种可在低温下保持柔韧性和离子传导性能的碱性凝胶电解质,并利用其制备了一种一体式超级电容器,其可在零点温度以下(-36℃)仍具有稳定的工作能力.
基金
financially supported by the Basic Research Project of Science and Technology Innovation Commission of Shenzhen (JCYJ20170817110251498)
Guangdong Special Support for Science and Technology Leading Young Scientist (2016TQ03C919)
the National Natural Science Foundation of China (21603094, 21703096, and 11775105)
