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Interfacial perfluorosulfonic acid ionomer stabilizing sputtered Bi catalyst for highly selective and scalable
Chuyao Jin1, Taoning Lei1, Shaorui Zhang2
1State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China. zhangx_energy@zju.edu.cn.
None:
Ionomers in gas diffusion electrodes can actively tune CO2-to-formate electroreduction. A thin perfluorosulfonic acid ionomer on sputtered Bi creates an ionically conductive interface, delivering >95% formate FE at 400 mA cm-2 and 135 h stability on a 25 cm2-active-area device at 100 mA cm-2, outperforming the polytetrafluoroethylene-modified catalyst in activity and durability.
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