Zhang Fangfang, Yang Minchen, Zhang Siyi, Fang Pengfei
Hubei Nuclear Solid Key Laboratory, College of Physics and Science Technology, Wuhan University, Wuhan 430072, China.
Polymers (Basel). 2019 Jul 31;11(8):1268. doi: 10.3390/polym11081268.
Improving the electrocatalytic performance of oxygen evolution reaction (OER) is essential for oxygen-involved electrochemical devices, including water splitting and rechargeable metal-air batteries. In this work, we report that the OER performance of commercial catalysts of IrO, CoO, and Pt-C can be improved by replacing the traditional Nafion ionomer with newly synthesized copolymers consisting of protonated imidazolium moieties such as ion conductors and binders in electrodes. Specifically, such an improvement in OER performance for all the tested catalysts is more significant in basic and neutral environments than that under acidic conditions. We anticipate that the results will provide new ideas for the conceptual design of electrodes for oxygen-involved electrochemical devices.
提高析氧反应（OER）的电催化性能对于包括水分解和可充电金属空气电池在内的涉及氧气的电化学装置至关重要。在这项工作中，我们报告称，通过用新合成的由质子化咪唑鎓部分组成的共聚物替代传统的Nafion离聚物，作为电极中的离子导体和粘合剂，可以提高IrO、CoO和Pt-C等商业催化剂的OER性能。具体而言，在碱性和中性环境中，所有测试催化剂的OER性能提升比在酸性条件下更为显著。我们预计这些结果将为涉及氧气的电化学装置电极的概念设计提供新思路。
