Sucrose-based reticulated vitreous carbon foams and their modification with nickel hexacyanoferrate for energy storage applications
| Autor: | Juvencio Vazquez-Samperio, Elcy María Córdoba-Tuta, Edilso Reguera, Ariel Guzmán-Vargas, Próspero Acevedo-Peña |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Mechanical Engineering Carbon nanofoam chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Energy storage 0104 chemical sciences Electronic Optical and Magnetic Materials Dielectric spectroscopy X-ray photoelectron spectroscopy Chemical engineering chemistry Materials Chemistry Electrical and Electronic Engineering Cyclic voltammetry 0210 nano-technology Porosity Carbon |
| Zdroj: | Diamond and Related Materials. 109:108084 |
| ISSN: | 0925-9635 |
| DOI: | 10.1016/j.diamond.2020.108084 |
| Popis: | This contribution shows a novel and low-cost strategy for the synthesis of 3D carbon scaffolds, made of reticulated vitreous carbon, (RVC), and their application as substrate in hybrid electrochemical storage devices. Morphological and spectroscopic (Raman, FTIR and XPS) characterization reveal the obtaining of RVC foams with different characteristics such porosity, functional groups and electronic conductivity, inherit from the foams employed as sacrificial polymeric templates during their fabrication. RVC were modified with nickel hexacyanoferrate (NiPBA) to boost their energy storage performance towards Na-ion storage. The electrochemical response of obtained NiPBA/RVC composites exhibits a synergic combination of the energy storage mechanisms and properties of each of the components. Cyclic voltammetry and electrochemical impedance spectroscopy established that the deposition of NiPBA films on 3D carbon foam improves the storage capacity 1.8 times and considerably decreases the impedances involved in the alkaline cation exchange, in comparison to bare RVC obtained from sucrose. The improved performance of RVC F47 as a substrate in energy storage application might be related to interaction of different parameters such graphitization degree, conductivity and oxygenated functional groups on RVC surface. |
| Databáze: | OpenAIRE |
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