Metal-organic coordination polymer/multi-walled carbon nanotubes composites to prepare N-doped hierarchical porous carbon for high performance supercapacitors
| Autor: | Jinwei Luo, Wenbin Zhong, Mengke Zheng, Wantai Yang, Hao Li, Chuying Yu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Supercapacitor
Materials science Coordination polymer General Chemical Engineering Composite number chemistry.chemical_element 02 engineering and technology Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Capacitance 0104 chemical sciences law.invention chemistry.chemical_compound chemistry Chemical engineering law Specific surface area Electrochemistry Gravimetric analysis 0210 nano-technology Carbon |
| Zdroj: | Electrochimica Acta. 284:69-79 |
| ISSN: | 0013-4686 |
| DOI: | 10.1016/j.electacta.2018.07.176 |
| Popis: | Developing high nitrogen content carbon-based electrode materials with high volumetric specific capacitance and high energy density has attracted considerable attentions for practical applications of supercapacitors. Herein, N-doped porous carbon/multi-walled carbon nanotubes (NPCMT) with high nitrogen content is prepared by directly pyrolyzing metal-organic coordination polymer (MOCP) composite, which was formed by the reaction of 4,4′-bipyridine (BPD), FeCl3 and multi-walled carbon nanotubes. The as-prepared NPCMT exhibits a hierarchical pore structure with high specific surface area (862.5 m2 g−1) and high N-doped content (10.71 at.%). Benefited from these unique properties, NPCMT presents high gravimetric specific capacitance of 295.2 F g−1, high volumetric specific capacitance of 312.9 F cm−3 and excellent cycle stability. Moreover, the assembled symmetric supercapacitors possess superior energy density of 18.82 W h kg−1. The combination of MOCP and multiwall nanotubes points toward a prominent direction to develop N-doped porous carbon electrode materials for high performances supercapacitors. |
| Databáze: | OpenAIRE |
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