Chalcogenides electrocatalysis

Alonso Vante N, Jaegermann W, Tributsch H, Hoenle W, Yvon K (1987) Electrocatalysis of oxygen reduction by chalcogenides containing mixed transition metal clusters. J Am Chem Soc 109 3251-3257... 

Electrocatalysis via Thin and ultra Thin Layers of Chalcogenide Materials... 

Photo)Electrocatalysis on Nanostructured TiO2 Surface Modified via Chalcogenide Materials... 

The cathodic oxygen reduction (ORR) electrocatalysis on chalcogenides is discussed in an authoritative Chapter by N. Alonso-Vante. Several new finding are discussed related to the design, genesis and ORR mechanism on these materials which are promising catalysts for Pt replacement in the future. 

The intent of this chapter is to give readers a flavor of research into the ORR performed during three decades on transition metal chalcogenide materials. Although not discussed in this chapter, it is likely that the ORR arena is nowadays dominated by the platinum-based catalysts. But the issue of stability and activity as well as tolerance requirements for large-scale fuel cell application is still a matter that requires efforts of materials scientists, and therefore, it remains still a challenging aspect in ORR electrocatalysis. 

Alonso-Vante N (2011) Stmcture and reactivity of transition metal chalcogenides toward the molecular oxygen reduction reaction. In Vayenas CG (ed) Interfacial phenomena in electrocatalysis, vol 51, Modem aspects of electrochemistry. Springer, New York, pp 255-300... 

Electrocatalysis of the ORR of various Chevrel type chalcogenide compounds was first studied by Alonso-Vante and Tributsch [19] in an acid medium and an enhancement in the ORR activity was observed when Mo was partially substituted by Ru. The compounds containing non-substituted octahedral Mo show metallic behavior while Ru substituted Mo octahedral (Moe-rM Xg, where X = S, Se, Te) systems show semiconducting behavior. The compound Mo4.2Rui,8Se8 displayed catalytic behavior comparable to that of Pt. The ORR overpotentials on catalysts of the series MogXg followed the trend Te[Pg.468]

---