ELECTROCHEMICAL CELL, CELL STACK, AND PRODUCTION METHOD OF ELECTROCHEMICAL CELL

To provide an electrochemical cell in which cracks are less likely to occur in a flow channel plate.SOLUTION: An electrochemical cell 1 according to an embodiment of the present invention comprises: an electrode plate 10 including an anode electrode 11, a cathode electrode 12, and a diaphragm 13; a flow channel plate 20 with one surface in contact with the anode electrode 11 or the other surface in contact with the cathode electrode 12, in which multiple anode-side flow channel grooves 21 are formed on the one surface and multiple cathode-side flow channel grooves 22 are formed on the other surface; an electrode plate outer frame 100 to be joined onto the electrode plate 10; and a flow channel plate outer frame 200 to be joined onto the flow channel plate 20. The flow channel plate 20 is a corrugated plate in which convex parts and concave parts are alternately formed and the convex parts and the concave parts extend in parallel. The corrugated surface on the one surface forms the anode-side flow channel grooves 21, and the corrugated surface on the other surface forms the cathode-side flow channel grooves 22.SELECTED DRAWING: Figure 4 【課題】流路板にヒビ割れが発生し難くなる電気化学セルを提供する。【解決手段】一実施の形態によれば、電気化学セル１は、アノード電極１１、カソード電極１２、及び隔膜１３を有する電極板１０と、アノード電極１１に一方の面で接するか又はカソード電極１２に他方の面で接し、一方の面に複数のアノード側流路溝２１が形成され、他方の面に複数のカソード側流路溝２２が形成される流路板２０と、電極板１０に接合される電極板外枠１００と、流路板２０に接合される流路板外枠２００と、を備える。流路板２０は、凸部と凹部とが交互に形成され且つ凸部及び凹部がそれぞれ互いに平行に延びる波板状であり、一方の面における波形状の表面でアノード側流路溝２１を形成し、他方の面における波形状の表面でカソード側流路溝２２を形成する。【選択図】図４