Porous Electrode Characteristics Of Battery Capacity

Through testing and analyzing the internal structure of the carbon electrodes for lithium batteries and super-capaitor ACF Electrode,we summarized the key factor affecting electrode structural properties in electrode preparation,and then found out the technical means to increase the capacity of electrode preparation . At the temperature of 77K,we measured the electrode material adsorption isotherm through the physical absorption of nitrogen,form electrode material, calculated parameters including the internal hole size , aperture distribution,surface area,etc. of electrode;analyzed external appearance property and additive distribution of porous electrode with electronic scannong electron microscopy(SEM);determined the capacity of the electrodes and power output performance through electrode discharge test.The result showed that:carbon electode of lithium batteries adsorption isotherm is typical IV adsorption isothem characteristic. There mainly are me sopores with a diameter is 20A in the internal electrode, and there is also a certain amount of micro-pores and macroporous existing. Adsorption isotherm . whose internal is mainly mesoporous with diameter less than 20A company with a few small holes . All of them participate the physical adsorption process. Analysis : The key factors affecting the electrode structure decide characteristic of the capacity of battery output . There key factors includes ingredients ratio in electrode materials,temperature parameters of technicsl process , choice of technical parameters in the rolling process , distribution of the electrode activator ,etc . And it is a reliable way to increase the capacity of electrode output through reducing ingredients ratio, improving on the temperature condition and choosing the duitable electrode activator which has little effect on the electrode structure .