Department of Chemistry and School of Energy Resources, University of Wyoming , Laramie, Wyoming 82071, United States.
ACS Comb Sci. 2013 Feb 11;15(2):82-9. doi: 10.1021/co300086h. Epub 2013 Jan 22.
A library of electrocatalysts for water electrolysis under acidic conditions was created by ink jet printing metal oxide precursors followed by pyrolysis in air to produce mixed metal oxides. The compositions were then screened in acidic electrolytes using a pH sensitive fluorescence indicator that became fluorescent due to the pH change at the electrode surface because of the release of protons from water oxidation. The most promising materials were further characterized by measuring polarization curves and Tafel slopes as anodes for water oxidation. Mixed metal oxides that perform better than the iridium oxide standard were identified.
通过喷墨打印金属氧化物前体，然后在空气中进行热解来制备混合金属氧化物，从而创建了用于酸性条件下水电解的电催化剂库。然后，使用 pH 敏感荧光指示剂在酸性电解质中筛选这些组成，该指示剂由于水氧化过程中质子的释放而导致电极表面 pH 发生变化，从而发出荧光。通过测量作为阳极的水氧化的极化曲线和塔菲尔斜率对最有前途的材料进行了进一步表征。鉴定出了比氧化铱标准性能更好的混合金属氧化物。
