电源技术
電源技術
전원기술
CHINESE JOURNAL OF POWER SOURCES
2015年
4期
696-697,752
,共3页
Im-SPI膜%电流效率%电压效率
Im-SPI膜%電流效率%電壓效率
Im-SPI막%전류효솔%전압효솔
Im-SPI membrane%coulombic efficiency%voltage efficiency
选择Nafion117电解质膜作为对比，考察了含咪唑基磺化聚酰亚胺(Im-SPI)电解质膜应用于全钒氧化还原液流电池的可行性，测定了Im-SPI离子交换膜的电导率及在1.5 mol/L VOSO4溶液中VO2+离子的透过率。实验结果表明， Im-SPI膜电导率为0.10 S/cm，高于Nafion117膜；VO2+离子的渗透系数为3.43×10－7 cm2/s，稍大于Nafion117膜。单电池实验充放电电流密度60 mA/cm2时，Im-SPI膜电流效率可达99.67%，电压效率可达82.41%，能量效率相比Nafion117单电池提高了1.65%。
選擇Nafion117電解質膜作為對比，攷察瞭含咪唑基磺化聚酰亞胺(Im-SPI)電解質膜應用于全釩氧化還原液流電池的可行性，測定瞭Im-SPI離子交換膜的電導率及在1.5 mol/L VOSO4溶液中VO2+離子的透過率。實驗結果錶明， Im-SPI膜電導率為0.10 S/cm，高于Nafion117膜；VO2+離子的滲透繫數為3.43×10－7 cm2/s，稍大于Nafion117膜。單電池實驗充放電電流密度60 mA/cm2時，Im-SPI膜電流效率可達99.67%，電壓效率可達82.41%，能量效率相比Nafion117單電池提高瞭1.65%。
선택Nafion117전해질막작위대비，고찰료함미서기광화취선아알(Im-SPI)전해질막응용우전범양화환원액류전지적가행성，측정료Im-SPI리자교환막적전도솔급재1.5 mol/L VOSO4용액중VO2+리자적투과솔。실험결과표명， Im-SPI막전도솔위0.10 S/cm，고우Nafion117막；VO2+리자적삼투계수위3.43×10－7 cm2/s，초대우Nafion117막。단전지실험충방전전류밀도60 mA/cm2시，Im-SPI막전류효솔가체99.67%，전압효솔가체82.41%，능량효솔상비Nafion117단전지제고료1.65%。
Compared to Nafion117 electrolyte membrane, the feasibility of benzimidazole group-containing sulfonated polyimides (Im-SPI) electrolyte membrane used in al vanadium redox flow battery was investigated. The proton conductivity and VO2+ions penetration rate in 1.5 mol/L VOSO4 solution of Im-SPI membrane were measured. The results show that the proton conductivity of Im-SPI is 0.10 S/cm, much higher than that of Nafion117 membrane, while the permeability of VO2+is 3.43×10-7 cm2/s, a little higher than that of Nafion117 membrane. The single celltest shows that the coulombic efficiency and voltage efficiency of Im-SPI membrane reach 99.67%and 82.41%, and the power efficiency improves by 1.65%than that of Nafion117 membrane under the current density of 60 mA/cm2.
