小苹果草莓心
Electrochemical capacitor, also known as super capacitor. Is a cross between a battery and a capacitor between the new type of energy storage device with high power density, high energy density, long cycle life, etc, it makes up for the lack of battery and conventional capacitors, in many areas has a broad application prospect. Performance of super capacitor electrode is the most critical factor. Activated carbon specific surface area, pore size distribution and surface chemical properties are determined by their chemical properties are important factors. For that alkali carbon ratio of coal based activated carbon electrode electrochemical performance, this paper adopts the following method: experiments were carried out using different alkali carbon ratio KOH and coal extract humic acid mixture high temperature activation, the other used fixed alkali carbon ratio in different temperature of activation, made with KOH as electrolyte supercapacitor electrode. Using constant current charge and discharge, cyclic voltammetry, electrochemical methods such as leakage current on activated carbon electrode electrochemical performance. Study of alkali carbon ratio, activation temperature on the effect of activated charcoal. The results show that:: (1) in the test range, alkali carbon ratio was highest when the activation of the active carbon prepared by the measured capacitance contrast group was significantly higher than that of other. (2)700℃for its optimum activation temperature.
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英文缩写是SC(Super-Capacitor)。超级电容器(super-capacitor,ultracapacitor),又叫电化学电容器(Electrochemcial Capacitor, EC)、黄金电容、法拉电容,;包括双电层电容器(Electrostatic double-layer capacitor)和赝电容器(Electrochemical pseudocapacitor),通过极化电解质来储能。超级电容器是一种电化学元件,但在其储能的过程并不发生化学反应,这种储能过程是可逆的,也正因为此超级电容器可以反复充放电数十万次。超级电容器可以被视为悬浮在电解质中的两个无反应活性的多孔电极板,在极板上加电,正极板吸引电解质中的负离子,负极板吸引正离子,实际上形成两个电容性存储层,被分离开的正离子在负极板附近,负离子在正极板附近。
我不是小痴
超级电容器(Supercapacitor),又叫做电化学电容器(ElectrochemicalCapacitors),是上个世纪七八十年代发展起来的一种介于传统电容器与电池之间的新型储能装置,它的电容量达到了法拉级,比相同体积的电解电容器容量大2000~6000倍,功率密度是电池的10~100倍,能够进行大电流充放电,充放电效率高,循环充放电的次数可以达到105次以上,不用维护且对环境没有伤害