Free-Standing Nitrogen-Doped Cup-Stacked Carbon Nanotube Mats for Potassium-Ion Battery Anodes
| Autor: | Chaolun Ni, Alexander Star, Xinxin Zhao, Jiangwei Wang, Yifan Tang, Yunhua Xu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Battery (electricity)
Materials science Energy Engineering and Power Technology Potassium-ion battery 02 engineering and technology Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Energy storage 0104 chemical sciences Anode Ion law.invention Chemical engineering law Electrode Materials Chemistry Chemical Engineering (miscellaneous) Electrical and Electronic Engineering 0210 nano-technology |
| Zdroj: | ACS Applied Energy Materials. 1:1703-1707 |
| ISSN: | 2574-0962 |
| Popis: | Free-standing nitrogen-doped cup-stacked carbon nanotube (NCSCNT) mats were synthesized and tested as anodes for potassium-ion batteries (KIBs). The edge-open structure character of the NCSCNTs allows a facile insertion of K+ ions into the carbon nanotubes. Combined with the nanosized feature and interconnected flexible structure, the NCSCNTs demonstrate impressive electrochemical performance with a reversible capacity of 323 mA h/g and a markedly improved rate capability retaining 75 mA h/g even at 1000 mA/g. Additionally, the free-standing NCSCNT mat electrodes eliminate the utilization of nonactive components of binders and conductive agents during the battery assembly and thereby significantly enhance the total specific capacity of the electrodes. |
| Databáze: | OpenAIRE |
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