CAJ | 학술논문

建立了适合全钒液流电池计算的电化学模型，并对部分电化学模型进行了简化；利用建立起来的电化学模型，数值模拟了在一个充放电循环过程中钒离子浓度、质子浓度、电流、温度与电解液流量对电堆性能的影响，数值模拟表明：电流越大，电堆的充放电时间越短，电堆的电压效率与能量效率越小；总钒离子浓度越大，电堆的充放电时间越长，电堆的电压效率与能量效率也越大；硫酸浓度、温度和电解液流量，不影响电堆的充放电时间，但影响电堆的电压效率与能量效率。
건립료괄합전범액류전지계산적전화학모형，병대부분전화학모형진행료간화；이용건립기래적전화학모형，수치모의료재일개충방전순배과정중범리자농도、질자농도、전류、온도여전해액류량대전퇴성능적영향，수치모의표명：전류월대，전퇴적충방전시간월단，전퇴적전압효솔여능량효솔월소；총범리자농도월대，전퇴적충방전시간월장，전퇴적전압효솔여능량효솔야월대；류산농도、온도화전해액류량，불영향전퇴적충방전시간，단영향전퇴적전압효솔여능량효솔。
This paper established an electrochemical model which was suitable for all vanadium flow cell's calculation ,and simplified some electrochemical model;based on the electrochemical model,numerical simulation on a charge and discharge cycle process was made to reveal these factors' influence ,vanadium ion concentration ,proton concentration, current,temperature and the electrolyte flow, on the electric reactor performance, the simulation showed that the greater the current, electric reactor of the charge and discharge time was shorter,also electric reactor voltage efficiency and energy efficiency was smaller; the bigger the total vanadium ion concentration,electric reactor of the recharge time was longer,also electric reactor voltage efficiency and energy efficiency was bigger.Sulfuric acid concentration,temperature and the electrolyte flow,did not affect electric lot of charge and discharge time, but brought impact on electric voltage efficiency and energy efficiency.