全钒液流电池磺化石墨烯/Nafion复合膜的研究
收稿日期: 2015-07-24
修回日期: 2015-09-30
网络出版日期: 2015-10-28
基金资助
江苏省科技厅项目(No. BE2013084,No. BA2014117)
Sulfonated-Graphene/Nafion Composite Membrane for All Vanadium Redox Flow Batteries
Received date: 2015-07-24
Revised date: 2015-09-30
Online published: 2015-10-28
杨大伟 , 董燕青 , 范镜敏 , 郑明森 , 董全峰 . 全钒液流电池磺化石墨烯/Nafion复合膜的研究[J]. 电化学, 2015 , 21(5) : 407 -410 . DOI: 10.13208/j.electrochem.150724
Nafion membrane has been widely used in fuel cells due to its good proton conductivity, chemical and mechanical stabilities. However, the well-developed water channels in Nafion membrane have restricted its application in all vanadium redox flow batteries owing to the high permeation of vanadium ions and the cost. In this work, the water adsorption rate, resistivity and transference number of vanadium ions of sulfonated-graphene/Nafion composite membrane were investigated and compared with those of Nafion membrane in an effort to overcome the abovementioned drawbacks. It was found that the area resistivity and permeation rate of sulfonated-graphene/Nafion composite membrane were significantly reduced after the modification of Nation membrane by sulfonated grapheme. The results from the all vanadium redox flow battery indicated that the sulfonated-graphene/Nafion composite membrane exhibited better electrochemical performance, demonstrating potential application in all vanadium redox flow batteries.
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