化工进展
化工進展
화공진전
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2012年
9期
1946-1949,1974
,共5页
潘建欣%廖玲芝%谢晓峰%王树博%王金海%尚玉明%周涛
潘建訢%廖玲芝%謝曉峰%王樹博%王金海%尚玉明%週濤
반건흔%료령지%사효봉%왕수박%왕금해%상옥명%주도
全钒液流电池%暂态边界电压法%等效电路模型%欧姆阻抗%极化阻抗
全釩液流電池%暫態邊界電壓法%等效電路模型%歐姆阻抗%極化阻抗
전범액류전지%잠태변계전압법%등효전로모형%구모조항%겁화조항
all vanadium redox flow battery(VRB)%transient-boundary voltage method%equivalent circuit model%ohm resistance%polarization resistance
国内首次采用暂态边界电压法在线研究了全钒液流电池(VRB)的特性,建立了由电压源、电阻以及一个电阻与电容并联的3部分串联而成的等效电路模型;研究了电流密度和荷电状态(SOC)对等效电路元件的影响。实验结果表明,极化阻抗随电流密度的增加有轻微下降,在充电初期和放电末期达到最大值。与极化阻抗相比,充、放电过程中的欧姆阻抗最大,是导致电压损失的主要因素,分别为1.905Ω.cm2和2.139Ω.cm2,暂态边界电压法是一种简单且有效的表征全钒液流电池性能的新方法。
國內首次採用暫態邊界電壓法在線研究瞭全釩液流電池(VRB)的特性,建立瞭由電壓源、電阻以及一箇電阻與電容併聯的3部分串聯而成的等效電路模型;研究瞭電流密度和荷電狀態(SOC)對等效電路元件的影響。實驗結果錶明,極化阻抗隨電流密度的增加有輕微下降,在充電初期和放電末期達到最大值。與極化阻抗相比,充、放電過程中的歐姆阻抗最大,是導緻電壓損失的主要因素,分彆為1.905Ω.cm2和2.139Ω.cm2,暫態邊界電壓法是一種簡單且有效的錶徵全釩液流電池性能的新方法。
국내수차채용잠태변계전압법재선연구료전범액류전지(VRB)적특성,건립료유전압원、전조이급일개전조여전용병련적3부분천련이성적등효전로모형;연구료전류밀도화하전상태(SOC)대등효전로원건적영향。실험결과표명,겁화조항수전류밀도적증가유경미하강,재충전초기화방전말기체도최대치。여겁화조항상비,충、방전과정중적구모조항최대,시도치전압손실적주요인소,분별위1.905Ω.cm2화2.139Ω.cm2,잠태변계전압법시일충간단차유효적표정전범액류전지성능적신방법。
A single cell of vanadium redox flow battery(VRB) was investigated on-line by the transient-boundary voltage method.An equivalent circuit model was established using the voltage source,resistor,and a resistor in parallel with the capacitance of three-part series.The effects of current density and state of charge(SOC) on equivalent circuit components values were investigated.The experimental results showed that the polarization resistance decreased slightly with increasing current density,and reached its maximum in the beginning of charge and the end of discharge.Compared with polarization resistance,ohm impedance in the charge/discharge process was the highest respectively 1.905 cm2and 2.139 cm2.It was the main factor leading to voltage loss.The transient boundary voltage method is a simple and effective way of characterizing performance of vanadium redox flow battery.