The present invention relates to a device for an electrochemical cell, comprising a first layer (61) of substrate material (65) having a plurality of first hydrophilic areas of the substrate and at least one hydrophobic area separating said first hydrophilic areas, the first layer of substrate material comprising at least two first electrodes (66, 67) made on at least two first hydrophilic areas；a second layer (62) of substrate material (65) having a plurality of second hydrophilic areas of the substrate and at least one hydrophobic area separating said second hydrophilic areas, the second layer of substrate material comprising at least two second electrodes (67, 66) made on at least two second hydrophilic areas；and one or more electrical conductors (68) connected to at least two of said first electrodes. The first layer (61) of substrate material (65) and the second layer (62) of substrate material (65) are positioned on top of one another such that the at least two first electrodes (66, 67) are aligned with the at least two second electrodes (67, 66) in order to form at least two electrochemical cells for producing voltage when the at least two hydrophilic areas are contacted with an aqueous liquid.La présente invention concerne un dispositif pour cellule électrochimique, comprenant une première couche (61) de matériau de substrat (65) comportant une pluralité de premières zones hydrophiles du substrat et au moins une zone hydrophobe séparant lesdites premières zones hydrophiles, la première couche de matériau de substrat comprenant au moins deux premières électrodes (66, 67) formées sur au moins deux premières zones hydrophiles ； une seconde couche (62) de matériau de substrat (65) comportant une pluralité de secondes zones hydrophiles du substrat et au moins une zone hydrophobe séparant lesdites secondes zones hydrophiles, la seconde couche de matériau de substrat comprenant au moins deux secondes électrodes (67, 66) formées sur au moins deux secondes zones hydr
