Method and electrochemical cell for synthesis and treatment of metal monolayer electrocatalysts metal, carbon, and oxide nanoparticles ion batch, or in continuous fashion

摘要

An apparatus and method for synthesis and treatment of electrocatalyst particles in batch or continuous fashion is provided. In one embodiment, the apparatus comprises a sonication bath and a two-compartment chamber submerged in the sonication bath. The upper and lower compartments are separated by a microporous material surface. The upper compartment comprises a cover and a working electrode (WE) connected to a Pt foil contact, with the foil contact connected to the microporous material. The upper chamber further comprises reference counter electrodes. The lower compartment comprises an electrochemical cell containing a solution of metal ions. In one embodiment, the method for synthesis of electrocatalysts comprises introducing a plurality of particles into the apparatus and applying sonication and an electrical potential to the microporous material connected to the WE. After the non-noble metal ions are deposited onto the particles, the non-noble metal ions are displaced by noble-metal ions by galvanic displacement.

主权项

1. An apparatus for depositing ultrathin films on a plurality of microparticles or nanoparticles comprising:
a two-compartment chamber configured for submersion in a sonication bath, the two-compartment chamber comprising an upper compartment and a lower compartment separated by a microporous material, and the upper compartment comprising a cover, a working electrode, a Pt foil contact, a reference electrode and a counter electrode, wherein the working electrode is electrically connected to the Pt foil contact, and the Pt foil contact is electrically connected to the microporous material, wherein the microporous material acts as a working electrode, and wherein the microporous material working electrode serves to deposit the film on the microparticles or nanoparticles as the microparticles or nanoparticles pass from the upper compartment to the lower compartment.