Electrochemical oxygen reduction on nickel electrodes in alkaline solutions—II

A Novel Electrochemical Cell Employing a Rotating Bipolar Electrode

“…This can be seen, for example, in the large increases in the rate of oxygen evolution immediately following a cathode potential pulse at Pt (162)(163)(164)(165)(166)(167) and other metals [e.g., Ni, Co, Fe, Au (168)(169)(170)(171)(172)(173)(174)(175)], and for other reactions [e.g., the oxidation of CO, the reduction of C12 (163), and the reduction of oxygen (176)(177)(178)(179)(180)(181)(182)(183)(184)(185)(186)]. Afonshin, Tyurin, Volodin, and co-workers (162,(186)(187)(188) and have studied the oxygen evolution reaction at Pt electrodes in detail, and have clearly established that the rate of oxygen evolution is directly dependent on the thickness and nature of the surface oxide film.…”

Ni and/or Co nanoparticles as catalysts for oxygen reduction reaction (ORR) at room temperature

“…Since the Bagotzky pioneering work [16,17], few papers have been devoted to catalytic activity of cobalt or nickel in alkaline medium, and conclusions are difficult to draw due to scarcity of reports and due to different methods of preparation of the materials studied. Thus, in 2002, vacuum thermal co-evaporation of thin films made of cobalt, nickel and tellurium oxide lead to materials exhibiting activity for both oxygen reduction and evolution in alkaline medium [22].…”

“…without presence of chemically coordinated heteroatoms. In the 1960s and 1970s, Bagotzky investigated the catalytic activity of nickel electrode in alkaline medium towards ORR [16,17]. When held many hours at a reducing potential, the electrode exhibited significant activity for oxygen reduction.…”

Stability and Activity of Pt/ITO Electrocatalyst for Oxygen Reduction Reaction in Alkaline Media

“…This decreased bond energy, combined with the outer-sphere electron transfer mechanism [6,7] decreases the overpotential for the ORR in alkaline media relative to acidic media. Simply put, the ORR in alkaline media is more facile than it is in acid and catalytic activity has been observed over much of the periodic table from carbon compounds [8][9][10], to various transition metals [11][12][13], coinage metals [14][15][16][17], metal macrocycles including porphyrins [18,19], phthalocyanines [20,21] and metal oxides [22]. Although some high activity non-platinum group metal catalysts have been shown for the ORR in alkaline media [23,24], Pt-based catalysts still remain one of the most popular in the literature because of their proven combination of high stability and activity.…”