Transition metal clusters electrolytic

Chapter 8 is devoted to the simulation of corrosive dissolution of Pt binary nano-cluster in acid environment, of polymer electrolyte membrane fuel cells. It is well known that under the present catalytic electrode production for low temperature fuel cell, it is necessary to reduce their costs by the proposal of binary platinum nanoclusters PtX (where X are the transition metals Cr, Fe, Co, Ni, Ru), while such nanoparticles may possess high... 

Electrolytic reduction of carbon dioxide is catalyzed by some transition metal complexes. Phthalocyanine and porphyrin complexes, as well as clusters such as... 

This process therefore has two impacts on the solid electrolyte interphase (SEI) formed at the negative electrode/electrolyte interfece. First, due to the presence of metallic particles, the SEI cannot be considered as an electronic isolator anymore and carmot therefore fully execute its role as a protector against the continuous reduction of the solvent at the negative electrode s surface. This results in further degradation reactions of the electrolyte at the electrode s surface, leading to a loss of capacity and increase in impedance [BRO 01]. Second, the clusters or metallic nanoparticles of transition metals can act as catalyzers in the SETs decomposition reactions generating a continuous consumption of lithium. 

Figure 2.25. Structure of Mo4Ru2Se8 and interaction of O2 at the Chevrel phase clusters-electrolyte interface [62]. (Reprinted from J Phys IV, Alonso-Vante N, Fieber-Erdmann M, Rossner H, Holub-Krappe E, Giorgetti Ch, Tadjeddine A, et al. The catalytic center of transition metal chalcogenides vis-a-vis the oxygen reduction reaction an in situ electrochemical EXAFS study, 7 887-9. 1997 with permission of EDP Sciences.)...

Figure 15.11. Interaction of molecular oxygen in acid medium at the Chevrel phase cluster-electrolyte interface [6]. (Reprinted from Journal de Physique, vol. 7, C2, The Catalytic Centre of Transition Metal Chalcogenides vis- -vis the Oxygen Reduction Reaction An In situ Electrochemical EXAFS Study, Alonso-Vante, N. et al. 31997, with permission from EDP Sciences.)...

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