Catalytic activity of titanium oxide for oxygen reduction reaction as a non-platinum catalyst for PEFC

Oxygen reduction behavior of RuO2/Ti, IrO2/Ti and IrM (M: Ru, Mo, W, V) Ox/Ti binary oxide electrodes in a sulfuric acid solution

“…The development of catalysts to replace platinum, including oxides [1][2][3], carbides [4,5], and metal complexes [6,7], etc., has widely been examined by many research groups up to the present. Since iridium oxide is a typical material that resists corrosion in acidic solutions and is one of the outstanding electrocatalysts for oxygen evolution, IrO 2 -Ta 2 O 5 /Ti electrodes [8,9] have been used as oxygen-evolving anodes in the industrial electro-plating process, and the IrO 2 -RuO 2 -TiO 2 /Ti ternary oxide electrode is widely used as the Dimensionally Stable Anode (DSA ® ) catalyst-electrode in the electrolysis process for chlorine production in chlor-alkali industries [10].…”

Nitrogen-doped carbon xerogel: A novel carbon-based electrocatalyst for oxygen reduction reaction in proton exchange membrane (PEM) fuel cells

“…[1][2][3][4][5][6][7][8][9] However, the issues of high cost, scarce sources and long-term durability limit their large-scale production and hinder the commercialization of PEM fuel cells. [10][11][12][13][14] In order to decrease the cost of electrocatalysts and eliminate their dependence on noble metals, various non-noble metal catalysts have been explored recently as alternatives to the Pt-based electrocatalysts, which include chalcogenide catalysts, [15][16][17][18][19] transition metal macrocyclic compounds, [20][21][22] transition metallic oxides [23][24][25][26][27] and carbon-based catalysts. [28][29][30][31][32][33][34][35] In particular, carbon-based catalysts doped with the heteroatoms such as nitrogen (N) or boron (B) have been paid much attention and been proposed as typical non-noble metal catalysts for ORR [36][37][38] in alkaline media.…”

Cornell Fuel Cell Institute: Materials Discovery to Enable Fuel Cell Technologies

“…In another study we examined the potential bondbreaking of cyclopropane on the metal surfaces Ti(0001), Cr(110), Fe(110), Co(0001) and Pt (111). 21 While we did not find C-C bond activation for this strained molecule on any of the metal surfaces, we observed dissociative chemisorption on Ti(0001), not by breaking C-C bonds but through hydrogen abstraction.…”

“…There have been scattered reports of such activity in various oxides under a variety of conditions (including TiO 2 , ZrO 2 , Mo/V polyoxometallates, Mn, Co, Nb and Ta oxides, WO 3 , etc. [111][112][113][114][115][116][117][118][119][120] However, some of these materials dissolve under acidic conditions. Can the appropriate metals be doped into rutile to impart physical and chemical stability under acidic conditions, maintain conductivity and also impart catalytic activity?…”