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Chimie moléculaire Paris Centre
ÉCOLE DOCTORALE 406

Turning lead into gold: Materials and nanostructures in electrochemical energy conversion

Séminaire du Pr Julien Bachmann (FAU, Erlangen-Nürnberg)

Abstract

One strategy for minimizing the use of expensive functional materials in energy conversion devices consists in accurately controlling the interface’s microscopic geometry. ‘Anodic’ nanoporous templates and atomic layer deposition yield structured electrode surfaces with a tunable geometry of ordered pores. Their diameter and length are set accurately and varied systematically. Diffusion-limited electrochemical transformations remain unaffected by changes in their length, whereas galvanic current densities observed for slow multielectron transformations increase linearly with the pore length. We increase the electrochemical water oxidation turnover at iron oxide surfaces by three orders of magnitude.

25/09/17

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