Small particle electrodes by aerosol process

H - Electricity – 01 – M

Patent

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H01M 4/04 (2006.01) C01G 45/00 (2006.01) H01M 4/48 (2006.01)

Patent

CA 2172266

A method for preparing an electrode is provided including generating aerosol droplets of a precursor capable of being converted into a component of an electrode in a carrier liquid; converting the droplets into precursor particles; converting the precursor particles into particles of the electrode component; and depositing the electrode component onto an electrically conductive substrate. The electrode is characterized by a highly porous structure having a surface area in the range of 4m2/g and a discharge density at least 1.5 times greater than comparable electrodes prepared by conventional methods.

L'invention concerne un procédé de préparation d'une électrode consistant à générer des gouttelettes d'aérosol d'un précurseur apte à être converti en un composant d'une électrode dans un liquide porteur; à transformer les gouttelettes en particules précurseurs; à transformer les particules précurseurs en particules d'un composant d'électrode; et à déposer le composant d'électrode sur un substrat électroconducteur. L'électrode se caractérise par une structure très poreuse dont la superficie est supérieure à 4m?2¿/g et par une densité de décharge au moins 1,5 fois supérieure à celle d'électrodes comparables, préparées par des procédés traditionnels.

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