The polymeric ionic liquid poly(diallyldimethylammonium) bis(trifluoromethanesulfonyl)imide (PDADMA TFSI) is herein reported as a functional binder for sodium oxygen (Na–O₂) batteries using ionic liquid electrolytes for the first time. The poly(ionic liquid) PDADMA binder was also shown to enhance the electrocatalytic activity of the electrode through a process that was dependent on the counterion and polycation structure. To prove this concept, two other traditional binders, poly(vinylidene fluoride) (PVDF) and polytetrafluoroethylene (PTFE), were also assessed in this work, and it was shown that the lowest charge overpotential (0.9 V) was attained in the case of PDADMA TFSI. PVDF undergoes dehydrohalogenation in the presence of the nucleophilic superoxide species generated during the oxygen reduction reaction, forming several side products including sodium carbonate and sodium fluoride as previously reported for organic aprotic solvents. NaO₂ and Na₂O₂ were the major discharge products in cells using PDADMA TFSI and PTFE binders.

中文翻译：

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基于离子液体电解质的钠离子电池基于聚合物离子液体的功能结合剂

据报道，聚合物离子液体聚（二烯丙基二甲基铵）双（三氟甲磺酰基）酰亚胺（PDADMA TFSI）是钠氧（Na-O ₂）的功能性粘合剂。）首次使用离子液体电解质的电池。聚（离子液体）PDADMA粘合剂还显示出通过依赖于抗衡离子和聚阳离子结构的过程来增强电极的电催化活性。为了证明这一概念，在这项工作中还评估了另外两种传统的粘合剂，聚偏二氟乙烯（PVDF）和聚四氟乙烯（PTFE），结果表明，在这种情况下，电荷最低电势最低（0.9 V）。 PDADMA TFSI。PVDF在氧还原反应过程中产生的亲核超氧化物类的存在下进行脱卤化氢反应，形成几种副产物，包括碳酸钠和氟化钠，如先前报道的有机质子惰性溶剂所示。NaO ₂和Na ₂ O₂是使用PDADMA TFSI和PTFE粘合剂的电池中的主要放电产物。