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Ultrathin Hierarchical Porous Carbon Nanosheets for High‐Performance Supercapacitors and Redox Electrolyte Energy Storage
Open accessAbstract
The design of advanced high‐energy‐density supercapacitors requires the design of unique materials that combine hierarchical nanoporous structures with high surface area to facilitate ion transport and excellent electrolyte permeability. Here, shape‐controlled 2D nanoporous carbon sheets (NPSs) with graphitic wall structure through the pyrolysis of metal–organic frameworks (MOFs) are developed. As a proof‐of‐concept application, the obtained NPSs are used as the electrode material for a supercapacitor. The carbon‐sheet‐based symmetric cell shows an ultrahigh Brunauer–Emmett–Teller (BET)‐area‐normalized capacitance of 21.4 µF cm−2 (233 F g−1), exceeding other carbon‐based supercapacitors. The addition of potassium iodide as redox‐active species in a sulfuric acid (supporting electrolyte) leads to the ground‐breaking enhancement in the energy density up to 90 Wh kg−1, which is higher than commercial aqueous rechargeable batteries, maintaining its superior power density. Thus, the new material provides a double profits strategy such as battery‐level energy and capacitor‐level power density.
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Cites
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Self-citation
Cited by
Zheng, J., Pan, X., Huang, X., Xiong, D., Shang, Y., Li, X., Wang, N., Lau, W.-M., & Yang, H. Y. (2020) · Chemical Engineering Journal · doi:10.1016/j.cej.2020.125197 · Cited by 240
Metadata
- Authors
- Jayaramulu, K., Dubal, D. P., Nagar, B., Ranc, V., Tomanec, O., Petr, M., Datta, K. K. R., Zboril, R., Gómez‐Romero, P., & Fischer, R. A.
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2018-03-08
- Volume
- 30
- Issue
- 15
- Pages
- e1705789-e1705789
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W2789661203
- Cited by
- 394
- References
- 50
- FWCI
- 15.68
- Type
- journal article
- Language
- en
- Open access
- green
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- Jayaramulu, K., Dubal, D. P., Nagar, B., Ranc, V., Tomanec, O., Petr, M., Datta, K. K. R., Zboril, R., Gómez‐Romero, P., & Fischer, R. A. (2018). Ultrathin Hierarchical Porous Carbon Nanosheets for High‐Performance Supercapacitors and Redox Electrolyte Energy Storage. Advanced Materials. https://doi.org/10.1002/adma.201705789
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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