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Poly(tetrafluoroethylene) reinforced sulfonated poly(ether ether ketone) membranes for vanadium redox flow battery application

机译：聚（四氟乙烯）增强磺化聚醚醚酮膜用于钒氧化还原液流电池的应用

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摘要

Poly(tetrafluoroethylene) reinforced sulfonated poly(ether ether ketone) (SPEEK/PTFE) composite membranes are prepared for vanadium redox flow battery (VRB) application. Results show that SPEEK/PTFE composite membranes have lower water uptake and swelling ratio than that of SPEEK membranes due to the PTFE reinforcement. As a result, the composite membranes show higher elongation ratio and better mechanical stability than SPEEK membranes. VRB single cell tests are also carried out to further evaluate their performance. The batteries assembled with SPEEK/PTFE membranes exhibit higher columbic efficiency (CE) and energy efficiency (EE) than that of SPEEK membranes. Furthermore, the composite membranes show much better stability than pristine SPEEK, confirming that PTFE can effectively reinforce membranes to improve their chemical and mechanical stability under VRB operating condition. (C) 2012 Elsevier B.V. All Fights reserved.
机译：制备了聚四氟乙烯增强的磺化聚醚醚酮（SPEEK / PTFE）复合膜，用于钒氧化还原液流电池（VRB）应用。结果表明，由于PTFE的增强，SPEEK / PTFE复合膜的吸水率和溶胀率比SPEEK膜低。结果，与SPEEK膜相比，复合膜显示出更高的伸长率和更好的机械稳定性。还进行了VRB单电池测试，以进一步评估其性能。装有SPEEK / PTFE膜的电池比SPEEK膜具有更高的哥伦比亚效率（CE）和能效（EE）。此外，复合膜显示出比原始SPEEK更好的稳定性，这证明PTFE可以有效增强膜，以改善VRB操作条件下的化学和机械稳定性。 （C）2012 Elsevier B.V. All Fights保留。

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