CAJ | 학술논문

建立了一种原位监测钒电池正极电解液荷电状态SOC(State of Charge)的方法.通过测定钒电池正极电解液的氧化还原电位值ORP_a(Oxidation Reduction Potential),利用ORP_a值与In(1/SOC_a-1)在SOC_a(正极电解液荷电状态)为(0,100%)的开区间内呈线性关系这一规律.建立了ORP_a-SOC_a关系方程,并对该方程进行温度修正.采用修正方程计算所得的SOC_a值与电位滴定法测得的SOC_a值比较.误差小于±1.50%,可实现正极电解液荷电状态的原位监测.
건립료일충원위감측범전지정겁전해액하전상태SOC(State of Charge)적방법.통과측정범전지정겁전해액적양화환원전위치ORP_a(Oxidation Reduction Potential),이용ORP_a치여In(1/SOC_a-1)재SOC_a(정겁전해액하전상태)위(0,100%)적개구간내정선성관계저일규률.건립료ORP_a-SOC_a관계방정,병대해방정진행온도수정.채용수정방정계산소득적SOC_a치여전위적정법측득적SOC_a치비교.오차소우±1.50%,가실현정겁전해액하전상태적원위감측.
A method of in situ monitoring of SOC (State of Charge) for positive electrolyte in vanadium battery was presented, in which a temperature amended linear equation of oxidation reduction potential of positive electrolyte (ORP_a) with state of charge of positive electrolyte (SOC_a) was founded. The results show that the values of ORP_a are keeping linear with the values of In (1/SOC_a-1)in (0, 100%) region. There shows less than ± 1.50% error between the SOC_a calculated by the ORP_a-SOC_a equation and mensurated by potentiometric titration analysis. Thus, the presented method can be realized in situ monitoring of SOC_a.