Saheli Sania, Rezvani Ali Reza, Yavari Zahra, Dusek Michal, Kucerakova Monika
Department of Chemistry, University of Sistan and Baluchestan, P. O. Box 98135-674, Zahedan, Iran.
Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, 18221 Prague 8, Czech Republic.
Dalton Trans. 2020 Nov 17;49(44):15864-15873. doi: 10.1039/d0dt03113e.
Novel Pd/Co-Ni oxide composites were developed as electrocatalysts for formic acid electro-oxidation as a process that can be utilised in fuel cells and electrochemical sensors. For achieving this goal, the new complex [Co0.14Ni1.86(dipic)2(phen)2(H2O)2]·4H2O (1) was synthesised and used as an inorganic precursor for producing a Co-Ni mixed metal promoter. In the following, palladium nanoparticles were anchored on Co-Ni mixed metal oxides via a reaction of chemical reduction with four different loadings. The electrocatalytic activity of the electrocatalysts was investigated for HCOOH electro-oxidation by electrochemical studies. Compared with single component electrocatalysts, the new electrocatalysts exhibited higher current, improved absorption/desorption of hydrogen, and a higher loading for metal oxides.
新型钯/钴-镍氧化物复合材料被开发用作甲酸电氧化的电催化剂，该过程可应用于燃料电池和电化学传感器。为实现这一目标，合成了新的配合物[Co0.14Ni1.86(dipic)2(phen)2(H2O)2]·4H2O (1)，并用作制备钴-镍混合金属促进剂的无机前驱体。接下来，通过化学还原反应将钯纳米颗粒以四种不同负载量锚定在钴-镍混合金属氧化物上。通过电化学研究考察了电催化剂对甲酸电氧化的电催化活性。与单组分电催化剂相比，新型电催化剂表现出更高的电流、改善的氢吸附/解吸以及更高的金属氧化物负载量。
