NOVELTY - The gas-diffusion electrode comprises a gas-diffusion layer laminated on a reinforcement member. The gas-diffusion layer comprises a sintered and cast conductive powder/fluorinated binder composition. A gas-diffusion layer/reinforcement member assembly has a longitudinal elastic modulus of 15000-120000 MPa. The reinforcement member comprises expanded metals, woven metals, metal foams, carbon or metal cloth or felt materials. A weight ratio of carbon powder to fluorinated binder in the composition is 1-2. The gas-diffusion electrode further comprises a catalytic layer.    USE - The gas-diffusion electrode is useful in an electrochemical cell including hydrogen-depolarised electro winning cells, oxygen-depolarised chlor-alkali cells, depolarised electrodialysis cells and fuel cells (all claimed), and as hydrogen-consuming anode or oxygen-consuming cathode.    ADVANTAGE - The cost-effective gas-diffusion electrode exhibits enhanced stiffness, stability, improved mechanical characteristics and less energy consumption, and is easy to handle.    DETAILED DESCRIPTION - The gas-diffusion electrode comprises a gas-diffusion layer laminated on a reinforcement member. The gas-diffusion layer comprises a sintered and cast conductive powder/fluorinated binder composition. A gas-diffusion layer/reinforcement member assembly has a longitudinal elastic modulus of 15000-120000 MPa. The reinforcement member comprises expanded metals, woven metals, metal foams, carbon or metal cloth or felt materials. A weight ratio of carbon powder to fluorinated binder in the composition is 1-2. The gas-diffusion electrode further comprises a catalytic layer deposited onto the gas-diffusion layer on the side opposite to the reinforcement member. The catalyst layer comprises a recast ionomer layer containing a catalyst powder and a sintered and cast carbon-supported catalyst powder/fluorinated binder composition laminated on the gas-diffusion layer. INDEPENDENT CLAIMS are included for    (1) a method of manufacturing a gas-diffusion electrode; and    (2) an electrochemical cell.