Cam Tran Thi My, Anh Quang The, Gnanasekaran Lalitha, Aminabhavi Tejraj M, Vasseghian Yasser, Joo Sang-Woo
Department of Chemistry, Soongsil University, Seoul, 06978, South Korea.
Instituto de Alta Investigación, Universidad de Tarapacá, Arica, 1000000, Chile.
ChemSusChem. 2025 May 5;18(9):e202402270. doi: 10.1002/cssc.202402270. Epub 2025 Jan 16.
MXene 2D materials and non-noble transition metal oxide nanoparticles have been proposed as novel pH-universal platforms for oxygen evolution reaction (OER), owing to the enhancement of active site exposures and conductivity. Herein, CoO-RuO /TiCT/carbon cloths (CRMC) were assembled in a facile way as an efficient OER platform through a hydrothermal process. The CoO-RuO/TiCT demonstrated prominent OER catalytic performance under acidic and alkaline conditions, which showed overpotential values of 195 and 247 mV at 10 mA cm with Tafel slopes of 93 and 97 mVdec, respectively. The experimental results demonstrated that the electron transfer from CoO-RuO to TiCT/carbon cloth played a remarkable role in promoting OER catalytic activity. Further OER characterization indicated that the enhanced multi-electron reaction kinetics are attributed to Co and Ru acting as the primary active places for O adsorption and activation, which facilitated the generation of *OOH intermediate.
由于活性位点暴露增加和导电性增强，MXene二维材料和非贵金属过渡金属氧化物纳米颗粒已被提议作为析氧反应（OER）的新型pH通用平台。在此，通过水热法以简便的方式组装了CoO-RuO /TiCT/碳布（CRMC）作为高效的OER平台。CoO-RuO/TiCT在酸性和碱性条件下均表现出出色的OER催化性能，在10 mA cm时过电位值分别为195和247 mV，塔菲尔斜率分别为93和97 mVdec。实验结果表明，从CoO-RuO到TiCT/碳布的电子转移在促进OER催化活性方面发挥了显著作用。进一步的OER表征表明，增强的多电子反应动力学归因于Co和Ru作为O吸附和活化的主要活性位点，这促进了*OOH中间体的生成。
