A cost-effective nafion/lignin composite membrane with low vanadium ion permeation for high performance vanadium redox flow battery

JOURNAL OF POWER SOURCES

卷:482

Article

Ye, Jiaye^1,2  Yuan, Du³  Ding, Mei^1,4  Long, Yong¹  Long, Ting¹  Sun, Lidong^2,4  Jia, Chuankun^1,5 

[1] Changsha Univ Sci & Technol, Coll Mat Sci & Engn, Changsha 410114, Peoples R China

[2] Chongqing Univ, Sch Mat Sci & Engn, State Key Lab Mech Transmiss, Chongqing 400044, Peoples R China

[3] Natl Univ Singapore, Fac Engn, Dept Mat Sci & Engn, Singapore 117576, Singapore

[4] Changsha Univ Sci & Technol, Natl Engn Lab Highway Maintenance Technol, Changsha 410114, Peoples R China

[5] Changsha Univ Sci & Technol, Hunan Prov Key Lab Flexible Elect Mat Genome Engn, Changsha 410114, Peoples R China

关键词: Vanadium redox flow battery;    Proton exchange membrane;    Nafion;    Composite membrane;    Lignin;   

DOI  :  10.1016/j.jpowsour.2020.229023

来源: Elsevier

【 摘 要 】

Here we report an eco-friendly Nafion/lignin composite membrane with excellent performance for vanadium redox flow battery (VRFB). Through facile solution casting, the Nafion/lignin composite membrane presents the merits of high conductivity and low vanadium ions permeability. Under high current density (120 mA cm(-2)), the VRFB single cell with the optimized Nafion/lignin composite membrane exhibits superior performance metrics to commercial counterpart: high Coulombic efficiency (similar to 97.4%) and energy efficiency (similar to 82.7%), and prominent cyclability with slower capacity decay for similar to 52.8% capacity retention after 1000 cycles (vs. Nafion 212 membrane similar to 34.8% after only 150 cycles). More importantly, compared with the pristine Nafion 212 membrane, the cost of the composite membrane is reduced sharply by reducing the usage amount of Nafion polymer, while maintaining the membrane stability. Thus, the Nafion/lignin composite membrane is one of the competitive candidates for VRFB towards commercialization.

【 授权许可】

Free