Chemistry Faculty, Southern Federal University, 7 Zorge St, 344090 Rostov-on-Don, Russia.
Prometheus R&D LLC, 4g/36 Zhmaylova St, 344091 Rostov-on-Don, Russia.
Int J Mol Sci. 2023 Jan 22;24(3):2177. doi: 10.3390/ijms24032177.
This research focuses on studying the effects of various pretreatment types on a PtCu/C catalyst synthesized by the co-deposition of metal precursors. The treatment in a 1 M HNO solution for 1 h is shown to result in a slight increase in activity in the oxygen electroreduction reaction (both the mass activity and specific activity calculated for the value of the electrochemically active surface area). The sample obtained after the thermal treatment, which is carried out at 350 °C under an argon atmosphere for 1 h, demonstrates 1.7 times higher specific activity than the sample before the treatment. The durability testing results obtained by the stress testing method in a potential range of 0.6-1.4 V during 2000 cycles show that the PtCu/C catalysts after both the acid treatment and the thermal treatment are characterized by higher residual activity than the sample in the "as-prepared" state.
本研究专注于研究各种预处理类型对通过金属前体共沉积合成的 PtCu/C 催化剂的影响。在 1 M HNO 溶液中处理 1 小时会导致氧还原反应（电化学活性表面积的电化学活性表面积计算的质量活性和比活性）的活性略有增加。在氩气气氛下于 350°C 下进行 1 小时的热处理后获得的样品的比活性比处理前的样品高 1.7 倍。通过在 0.6-1.4 V 的电位范围内进行 2000 个循环的应变速率测试获得的耐久性测试结果表明，经过酸处理和热处理的 PtCu/C 催化剂的剩余活性均高于“未处理”状态的样品。
