PDF (1397K)
摘要
针对阳极板和阴极管制备的直接乙醇燃料电池(DEFC)存在的不足,采用管状阳极、管状阴极和Nafion117膜组装了异型DEFC。采用循环伏安特性曲线及交流阻抗等手段对组装的DEFC进行了电化学性能测试。考察了温度、乙醇浓度等对电性能的影响,并进行了电池稳定性测试。实验结果表明:电池操作温度及乙醇溶液浓度对电池性能影响较大,较高的温度比较有利于电池性能的提高,乙醇浓度在1mol/L的情况下效果最好;氧气流量对电池性能影响不大,但适当提高氧气流量对电池性能有利;通过电池的交流阻抗及稳定性测试,在1h内电池放电稳定性良好,15℃和60℃情况下,电流密度分别为42mA/cm2和27mA/cm2。在60℃,电解质为0.5mol/L硫酸和1mol/L乙醇溶液,氧气流量为100mL/min的情况下,电池的功率密度可达9.5mW/cm2。
Abstract
In view of the shortcomings of direct ethanol fuel cell(DEFC) prepared by the anode plate and cathode tube,the special-shaped DEFC was assembled by a tubular anode,tubular cathode and nafion117 membrane.The special-shaped DEFC performance was determined by linear cyclic voltammetry (LCV) technique and electrochemical impedance spectroscopic(EIS).The effects of work temperature and ethanol concentration on the electric properties were studied,and tested the stability of battery.The experimental results showed that battery operating temperature and ethanol concentration had a greater influence on the battery performance.Higher temperature and 1mol/L ethanol solution concentration were conducive to the improvement of battery performance.Oxygen flow rate had little impact on performance.The battery discharge stability was good within an hour through performance test,the current density was 42mA/cm2 and 27mA/cm2 at 15℃and 60℃.The power density can reach 9.5mW/cm2 at 60℃,when the electrolyte was 0.5mol/L sulfuric acid and 1mol/L ethanol solution,and oxygen flow rate was 100mL/min.
关键词
直接乙醇燃料电池
/
管状阳极
/
管状阴极
/
电池性能
Key words
direct ethanol fuel cell(DEFC)
/
tubular anode
/
tubular cathode
/
cell performance
异型直接乙醇燃料电池的制备及电性能研究[J].
化工新型材料, 2018, 46(2): 139-142 DOI:
[1] Abida B,Chirchi L,Baranton S,et al.Hydrogenotitanates nanotubes supported platinum anode for direct methanol fuel cell[J].Journal of Power Sources,2013,241:429-439.
[2] 侯明,衣宝廉.燃料电池的关键技术[J].科技导报,2016,34(6):52-61.
[3] Chetty R,Scott K.Direct ethanol flue cell with catalysed metal mesh anodes[J].Electrochimica Acta,2007,52(12):4073-4081.
[4] 汤东,倪红军,袁银南.固-胶流动相圆形直接乙醇燃料电池组:中国,CN101369670A[P].2009-02-18.
[5] 汤东,倪红军,罗福强.凝胶流动相方形直接乙醇燃料电池组:中国,CN101369669A[P].2009-02-18.
[6] 倪红军,汪兴兴,汤东.异型Ti电极直接乙醇燃料电池的制备与性能[J].江苏大学学报(自然科学版),2010,5(2):558-563.
[7] 倪红军,吕灿灿,王旭红,等.Pt-SnO2/C电催化剂异型直接乙醇燃料电池性能[J].江苏大学学报(自然科学版),2012,33(4):379-384.
[8] Goel Jyoti,Basu Suddhasatwa.Mathematical modeling and experimental validation of direct ethanol fuel cell[J].International Journal of Hydrogen Energy,2015,40(41):14405-14415.
[9] Li Y S,Zhao T S,Liang Z X.Performance of alkaline electrolyte-membrane-based direct ethanol fuel cells[J].Journal of Power Sources,2009,187(2):387-392.
[10] Zakaria Z,Kamarudin S K,Timmiati S N.Membranes for direct ethanol fuel cells:an overview[J].Applied Energy,2016,163:334-342.
基金资助
江苏省自然科学青年基金(BK20150425);江苏省新能源汽车工程技术研究中心资助(20160617)
