活性炭电极材料的有效电阻和放电电压随时间变化规律研究

论述了测试活性炭超级电容器材料充放电性能的方法步骤和测试结果,在此基础上,用微分方程非线性响应理论,研究材料放电电压随时间的变化规律,并得到材料的有效电阻和电容的数值以及放电电压随放电时间变化的解析式.结果表明:电容器不是线性元件,而是非线性元件;活性炭超级电容器材料放电电压随时间的变化并不遵从简单的负指数规律,而是非线性变化;用微分方程非线性响应理论得到的结果与实验测试结果符合较好.

On Laws of Discharge Voltage in Time of Activated Carbon Electrode Material

The method and step have been discussed in this paper to test charge-discharge performance of activated carbon super capacitor materials, with the testing results received. On this basis, the change of material discharge voltage has been studied on time by nonlinear response theory of differential equations, and the effective resistance, capacitance value, and analytic expression of discharge voltage with time change been obtained. The result shows that the capacitor is nonlinear element, the discharge voltage of activated carbon super capacitor does not conform to the simple negative exponential law with time, and it is a nonlinear change; the results obtained by the nonlinear response theory of differential equations agrees well with the experimental results.