Porous bamboo-like CNTs prepared by a simple and low-cost steam activation for supercapacitors
Yang Gao
Key Laboratory of Energy Materials Chemistry, Ministry of Education; Institute of Applied Chemistry, Xinjiang University, P. R. China
Search for more papers by this authorYakun Tang
Key Laboratory of Energy Materials Chemistry, Ministry of Education; Institute of Applied Chemistry, Xinjiang University, P. R. China
Search for more papers by this authorWei Liu
Key Laboratory of Energy Materials Chemistry, Ministry of Education; Institute of Applied Chemistry, Xinjiang University, P. R. China
Search for more papers by this authorCorresponding Author
Lang Liu
Key Laboratory of Energy Materials Chemistry, Ministry of Education; Institute of Applied Chemistry, Xinjiang University, P. R. China
Correspondence
Lang Liu, Key Laboratory of Energy Materials Chemistry, Ministry of Education; Institute of Applied Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang P. R. China.
Email: [email protected]; [email protected]
Search for more papers by this authorXingyan Zeng
Key Laboratory of Energy Materials Chemistry, Ministry of Education; Institute of Applied Chemistry, Xinjiang University, P. R. China
Search for more papers by this authorYang Gao
Key Laboratory of Energy Materials Chemistry, Ministry of Education; Institute of Applied Chemistry, Xinjiang University, P. R. China
Search for more papers by this authorYakun Tang
Key Laboratory of Energy Materials Chemistry, Ministry of Education; Institute of Applied Chemistry, Xinjiang University, P. R. China
Search for more papers by this authorWei Liu
Key Laboratory of Energy Materials Chemistry, Ministry of Education; Institute of Applied Chemistry, Xinjiang University, P. R. China
Search for more papers by this authorCorresponding Author
Lang Liu
Key Laboratory of Energy Materials Chemistry, Ministry of Education; Institute of Applied Chemistry, Xinjiang University, P. R. China
Correspondence
Lang Liu, Key Laboratory of Energy Materials Chemistry, Ministry of Education; Institute of Applied Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang P. R. China.
Email: [email protected]; [email protected]
Search for more papers by this authorXingyan Zeng
Key Laboratory of Energy Materials Chemistry, Ministry of Education; Institute of Applied Chemistry, Xinjiang University, P. R. China
Search for more papers by this authorFunding information: the Graduate Research Innovation Project of Xinjiang, Grant/Award Number: XJ2019G013; General Program of National Natural Science Foundation of China, Grant/Award Number: 51672235; Youth Program of National Natural Science Foundation of China, Grant/Award Number: 51902277; the National Ten Thousand Talents Program of China, Grant/Award Number: 2017
Summary
How to prepare porous carbons with appropriate structure for supercapacitors is a big challenge. In general, activation is the simplest way to obtain porous carbons. Porous bamboo-like CNTs were fabricated by simple activating sulfonated polymer nanotubes with steam at 800°C. Compared with the un-activated one, activated carbon nanotubes (ACNTs) have good tubular structure, larger specific surface area and rich porosity thanks to the protection of steam during the activation. The ACNTs electrode for supercapacitors displays a specific capacity of 276 F g−1 at 1 A g−1. When assembling ACNTs into a symmetrical supercapacitor, the specific capacity of the device can retain 98% after 10 000 cycles, and this result shows the great application prospect of ACNTs for supercapacitors.
Supporting Information
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| er5672-sup-0001-supinfo.docWord document, 5.3 MB | Appendix S1: Supporting information. |
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