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Journal article
Temperature-independent capacitance of carbon-based supercapacitor from −100 to 60 °C
Energy Storage Materials, Vol.22, pp.323-329
Nov 2019
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Building supercapacitors that can provide high energy density over a wide range of temperatures, where traditional energy storage devices fail to operate, requires tailoring of electrolyte and/or electrode material. Here, we show that record gravimetric capacitances of 164 and 182 F g−1 can be attained at −100 and 60 °C, respectively, nearly equivalent to the room-temperature value of 177 F g−1, when activated carbon-based electrodes with predominantly slit-shaped micropores and a low freezing-point electrolyte are used. Experimental data and density functional theory calculations suggest that electrode material characteristics, such as pore size and shape, matched with the effective size of partially solvated ions of the electrolyte, are the key factors in achieving such performance. This study provides evidence for the effective design of robust supercapacitors with sustained performance at both low and high temperatures.
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Details
- Title
- Temperature-independent capacitance of carbon-based supercapacitor from −100 to 60 °C
- Creators
- Jiang Xu - Micro/Nano Science and Technology Center, Jiangsu University, Zhenjiang 212013, ChinaNingyi Yuan - Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, ChinaJoselito M Razal - Institute for Frontier Materials, Deakin University, Geelong, Victoria 3220, AustraliaYongping Zheng - Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, TX 75080, USAXiaoshuang Zhou - Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, ChinaJianning Ding - Micro/Nano Science and Technology Center, Jiangsu University, Zhenjiang 212013, ChinaKyeongjae Cho - Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, TX 75080, USAShanhai Ge - Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, ChinaRuijun Zhang - State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, ChinaYury Gogotsi - Department of Materials Science and Engineering, A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USARay H Baughman - Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX 75080, USA
- Publication Details
- Energy Storage Materials, Vol.22, pp.323-329
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Identifiers
- 991014969851404721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology