Microstructured flow fields

Details Microstructured flow fields Microstructured flow fields

H - Electricity

01

M

H01M 8/02 (2006.01) H01M 4/92 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2348783

A flow field for an electrochemical cell such as a fuel cell is provided, having micro-flow channels having a width or depth of less than 800 µm, a pitch of less than 800 µm, or a proportion of inter-channel land area of less than 25 %. The channels may further comprise micro-features within the channels. A flow field plate comprising the subject flow field is provided.

La présente invention concerne un champ d'écoulement pour cellule électrochimique, par exemple pour une pile à combustible, comportant des micro-canaux d'une largeur ou d'une profondeur inférieure à 800 µm, avec un écartement inférieur à 800 µm, ou une proportion de cordons inter-canaux inférieure à 25 %. Par ailleurs, les canaux peuvent présenter des mini-caractéristiques. L'invention concerne une plaque d'écoulement de courant renfermant le champ d'écoulementn question.

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