期刊
CHEMICAL ENGINEERING JOURNAL
卷 393, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2020.124598
关键词
Flexible energy storage devices; Thermal management; Electrochemically exfoliated graphene; Layered double hydroxides
资金
- National Key R&D Project from Minister of Science and Technology of China [2016YFA0202702]
- National Natural Science Foundation of China [21975163]
- Guangdong Department of Science and Technology [2017A050501052]
- Shenzhen Research Plan [JCYJ20160229195455154]
Solid-state supercapacitors (SSCs) hold great promise in the application in portable and wearable electronic devices due to their great progress in electrochemical performance and fabrication technique in recent years. However, in consideration of increasingly harsh requirements toward electronic devices in miniaturization and operational security, the management of thermal generation and dissipation in SSC devices, which have been rarely considered at present, are very worthwhile to be investigated. In this work, flexible solid-state supercapacitors are assembled by rationally designed electrodes, which are fabricated layer by layer by using of an electrochemically exfoliated graphene (EG) nanosheet film, a porous metallic Ni layer and a NiMnLDH pseudocapacitive material layer. The ultrathin NiMnLDH nanosheets and the porous metallic Ni layer ensure high electrochemical performance for the NiMnLDH/Ni/EG electrodes (2110.4 mF cm(-2)) and the assembled SSC energy storage devices (732.5 mF cm(-2)). The employments of the EG film and the Ni layer avoid the SSC energy storage devices suffering from overheating during operation, because the high thermally conductive EG film could effectively dissipate the heat generated in the energy storage devices and the high electrically conductive metallic Ni layer could achieve low internal resistance to alleviate the Joule heat generation in the devices. This work could provide an effective thermal management strategy to promote future application of high-power energy storage devices in electronic industry.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据