Effects of Nanoporous Carbon Derived from Microalgae and Its CoO Composite on Capacitance
| Autor: | Joshua Y. Gomez, Stephanie Richins, Meng Zhou, Joshua Catanach, Shuguang Deng |
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| Rok vydání: | 2016 |
| Předmět: |
Supercapacitor
Materials science Carbonization Analytical chemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Capacitance 0104 chemical sciences Adsorption Chemical engineering chemistry Specific surface area medicine General Materials Science Cyclic voltammetry 0210 nano-technology Carbon Activated carbon medicine.drug |
| Zdroj: | ACS Applied Materials & Interfaces. 9:4362-4373 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | Nanoporous carbon was synthesized from microalgae as a promising electrode material for electric double layer capacitors due to its large specific surface area and controllable pore structures. The pore textural properties of the algae-derived-carbon (ADC) samples were measured by N2 adsorption and desorption at 77 K. The performance of the activated carbon (AC) as supercapacitor electrodes was determined by the cyclic voltammetry and galvanostatic charge/discharge tests. The effect of the nanoporous carbon structure on capacitance was demonstrated by calculating the contributions of micropores and mesopores toward capacitance. Capacitance was significantly affected by both pore size and pore depth. To further increase the specific capacity, a single-pot synthesis of porous carbon supported CoO composite (CoO/ADC) electrode material was developed using microalgae as the carbon source and Co(OH)2 as both a carbon activation agent and CoO precursor. After carbonization, CoO particles were formed and embedde... |
| Databáze: | OpenAIRE |
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