摘要:
An object of the invention is to provide activated carbon which is made from granular isotropic pitch and has a large electrostatic capacitance, a process for producing the same, a polarizable electrode, and an electric double layer capacitor. This object can be attained by activated carbon which is made from granular isotropic pitch. This activated carbon can be produced preferably by oxidizing granular isotropic pitch partially, making the pitch infusible and activating the pitch with a chemical agent, by heat treating the granular isotropic pitch and activating the pitch with a chemical agent, or by making granular isotropic pitch infusible, heat-treating the pitch, and activating the pitch with a chemical agent. The activated carbon of the present invention is mixed with a binder and an electroconductive filler to make a polarizable electrode useful for an electric double layer capacitor.
摘要:
The invention relates to the use of an activated carbon in electrodes for electrical double-layered capacitors, which can be obtained by a method comprising activating of a carbon-containing, green coke-based material, treating the carbon-containing material with an acid at a temperature between 30°C and 200°C, wherein the acid is citric acid, and removing the acid from the carbon-containing material.
摘要:
The invention is directed to a method for preparing catalytically active activated carbon, to catalytically active activated carbon obtainable by the method, and to the use of the catalytically active activated carbon. The method of the invention method comprises the steps of: i) mixing charcoal with one or more organic nitrogen-containing compounds, said nitrogen-containing compounds comprising, next to a first nitrogen atom, at least two or more further heteroatoms selected from the group consisting of nitrogen and oxygen, wherein said further heteroatoms have a lone pair; ii) drying the mixture obtained in step i); iii) activating the dried mixture using steam, thereby producing catalytically active activated carbon.
摘要:
The invention concerns activated carbons. It further concerns a method for obtaining said activated carbons from a partly mesophased and partly mesogenic pitch. It concerns a method for obtaining activated carbons from a partly mesophase and partly mesogenic pitch containing less than about 40 % of type α resins, more than about 40 % of type β resins and between about 5 and 30 % of type η resins by activating said pitch preceded by its optional carbonization.
摘要:
The present invention provides a process for producing an activated carbon having a small average particle diameter, a uniform particle size and a relatively large specific surface area suitable for an electric double layer capacitor electrode, in an easy and cost effective manner. The process comprises calcining an easily graphitizable carbon material such as petroleum coke or coal coke, used as the raw material under an oxidizing gas atmosphere, adjusting the particle size of the carbon material, and then activating the carbon material. The use of the activated carbon produced by the process of the present invention in an electrode can provide an electric double layer capacitor having a large capacitance per unit volume.