Wala Marta, Łubiarz Dorota, Waloszczyk Natalia, Simka Wojciech
Faculty of Chemistry, Silesian University of Technology, Krzywoustego Str. 6, 44-100 Gliwice, Poland.
Materials (Basel). 2023 Mar 9;16(6):2191. doi: 10.3390/ma16062191.
The increasing climate crisis requires an improvement in renewable energy technologies. One of them are fuel cells, devices that are capable of generating electricity directly from the chemical reaction that is taking place inside of them. Despite the advantages of these solutions, a lack of the appropriate materials is holding them back from commercialization. This research shows preliminary results from a simple way to prepare black TiO coatings, doped with Cu or Ni using the plasma electrolytic oxidation process, which can be used as anodes in urea-fueled fuel cells. They show activity toward urea oxidation, with a maximum current density of 130 μA cm (@1 V vs. Hg|HgO) observed for Cu-enhanced TiO and low potential of only 0.742 V (Vs Hg|HgO) required for 50 μA cm for Ni-enhanced TiO. These results demonstrate how the PEO process can be used for the preparation of TiO-based doped materials with electrocatalytic properties toward urea electrooxidation.
日益严重的气候危机要求改进可再生能源技术。其中之一是燃料电池，这种装置能够直接从其内部发生的化学反应中发电。尽管这些解决方案具有诸多优点，但缺乏合适的材料阻碍了它们的商业化。本研究展示了一种简单方法的初步结果，该方法通过等离子体电解氧化工艺制备掺杂有铜或镍的黑色二氧化钛涂层，可用于尿素燃料电池的阳极。它们对尿素氧化表现出活性，对于铜增强的二氧化钛，观察到最大电流密度为130 μA cm²（相对于Hg|HgO为1 V），而对于镍增强的二氧化钛，在50 μA cm²时仅需0.742 V（相对于Hg|HgO）的低电位。这些结果证明了等离子体电解氧化工艺可用于制备对尿素电氧化具有电催化性能的二氧化钛基掺杂材料。
