Preparation of mesoporous carbon microsphere/activated carbon composite for electric double-layer capacitors
Source abstract
Abstract
Mesoporous carbon microspheres (MCMs) with specific surface area and diameter of 1850 m2·g−1 and 1μm, respectively, were synthesized using the solvothermal method. When 20 wt% of these were added to a high surface area-activated carbon (HSAC: 3 200 m2·g−1) its interfacial resistance and ion diffusion resistance decreased significantly. The specific capacitance of the composite electrode is 230 F·g−1 in 6 mol·L−1 KOH electrolyte, whereas those of pure HSAC and MCMs are only 190 and 148 F·g−1, respectively, at a high current density of 12 A·g−1. The improvement in electrochemical performance of the HSAC electrode at high current densities is attributed to the small particle diameter, mesoporous structure and high specific surface area of the added MCMs.
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Research context
OpenAlex topics: Supercapacitor Materials and Fabrication · Advancements in Battery Materials · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (21)
Show source-provided references
1. Cooperation of micro- and meso-porous carbon electrode materials in electric double-layer capacitors [J]10.1016/j.jpowsour.2010.01.041 ↗
2. Studies of activated carbons used in double-layer capacitors [J]10.1016/S0378-7753(98)00038-X ↗
3. Characterization of activated nanoporous carbon for supercapacitor electrode materials [J]10.1016/j.carbon.2007.01.024 ↗
4. 3D Aperiodic hierarchical porous graphitic carbon material for high-rate electrochemical capacitive energy storage [J]10.1002/anie.200702721 ↗
5. Effect of pore size distribution of coal-based activated carbons on double layer capacitance [J]10.1016/j.electacta.2004.07.045 ↗
6. Fabrication of high-power electric double-layer capacitors [J]10.1016/S0378-7753(96)80014-0 ↗
7. Principles and applications of electrochemical capacitors [J]10.1016/S0013-4686(00)00354-6 ↗
8. Carbon materials for the electrochemical storage of energy in capacitors [J]10.1016/S0008-6223(00)00183-4 ↗
9. Influence of pore structure and surface chemistry on electric double layer capacitance in non-aqueous electrolyte [J]10.1016/S0008-6223(03)00141-6 ↗
10. Structures and electrochemical performances of pyrolized carbons from graphite oxides for electric double-layer capacitor [J]10.1016/j.jpowsour.2007.07.042 ↗
11. Electrochemical behavior of activated-carbon capacitor material loaded with nickel oxide [J]10.1016/j.carbon.2005.06.027 ↗
12. Capacitance behaviour of brown coal based active carbon modified through chemical reaction with urea [J]10.1016/j.electacta.2008.02.093 ↗
13. Anomalous increase in carbon capacitance at pore sizes less than 1 nanometer [J]10.1126/science.1132195 ↗
14. Pore structure control of mesoporous carbon as supercapacitor material [J]10.1016/j.matlet.2007.02.071 ↗
15. Acetylene black agglomeration in activated carbon based electrochemical double layer capacitor electrodes [J]10.1016/j.ssi.2008.06.002 ↗
16. Activated carbon-carbon nanotube composite porous film for supercapacitor applications [J]10.1016/j.materresbull.2005.09.029 ↗
17. Effect of conductive filler on the impedance behaviors of activated carbon based electric double layer capacitors [J]10.1016/j.jelechem.2010.02.008 ↗
18. Adsorption limit of supercritical hydrogen on super-activated carbon [J]10.1016/S0008-6223(01)00263-9 ↗
19. An activated carbon with high capacitance from carbonization of a resorcinol-formaldehyde resin [J]10.1016/j.elecom.2009.01.015 ↗
20. Electrochemical and capacitive properties of polyaniline-implanted porous carbon electrode for supercapacitors [J]10.1016/S0378-7753(03)00158-7 ↗
21. Achieving high electrode specific capacitance with materials of low mass specific capacitance: Potentiostatically grown thick micro-nanoporous PEDOT films [J]10.1016/j.elecom.2006.08.037 ↗