A soluble anion exchange ionomer with high OH⁻ ion conductivity comparable to that of H⁺ conductivity of Nafion is synthesised by chloromethylation of polystyrene-b-poly (ethylene/butylene)-b-polystyrene (SEBS) and used with NiCo₂O₄ electro-catalyst for water electrolysis. The ionomer has an ion exchange capacity of 1.9 mmol g⁻¹ and ionic conductivity of 0.14 S cm⁻² at 50 °C. The cell voltage at 20 °C at 100 mA cm⁻² is 1.77 and 1.72 V in, 0.1 and 1.0 M NaOH, respectively, for an optimum loading of 10 mg cm⁻² NiCo₂O₄. At 10 mg cm⁻² NiCo₂O₄ electrolyser cell performance is at least equal to or superior to that of IrO₂ at 2 mg cm⁻² with excellent stability over 1 h. When the catalyst is sprayed on the GDL instead of CCM, the performance is further improved to 1.65 V at 100 mA cm⁻² at 60 °C & 0.1 M KOH. The limited AEM electrolyser performance when operating with deionised water in comparison to PEM and alkaline electrolyser arises from the sluggish OER in the AEM environment equivalent to pH of 11.5 and the two orders of magnitude lower HER activity with respect to acid medium combined with the high Tafel slope of 120 mV dec⁻¹.

具有高OH可溶性阴离子交换离聚物^-离子传导性比得上H的⁺的Nafion的导电性通过聚苯乙烯-b-聚（乙烯/丁烯） -嵌段-聚苯乙烯（SEBS）的氯甲基化合成并尼科使用₂ ö ₄电-用于水电解的催化剂。离聚物在50℃下具有1.9mmol g ^-1的离子交换容量和0.14S cm ^-2的离子电导率。对于10 mg cm ^-2 NiCo ₂ O ₄的最佳负载量，在100 mA cm ^-2下20°C的电池电压分别为1.77和1.72 V in，0.1和1.0 M NaOH 。在10 mg cm ^-2时NiCo ₂O ₂电解池在2 mg cm ^-2的性能至少等于或优于IrO ₂，并且在1小时内具有出色的稳定性。当将催化剂喷涂到GDL而不是CCM上时，在60°C和0.1 M KOH的条件下，在100 mA cm ^-2下的性能进一步提高到1.65V 。与PEM和碱性电解槽相比，用去离子水运行时AEM电解槽性能有限，这是由于AEM环境中的OER缓慢（相当于pH值为11.5）以及相对于酸性介质和高Tafel的HER活性降低了两个数量级。 120 mV dec ^-1的斜率。