NOVELTY - The electrode structure has an electrode portion. A water removal plate (24) adjacent to the electrode portion includes a first surface, a second surface opposite to the first surface, several gas passages (243) passing from the first surface to the second surface, and several liquor passages (241) placed on the first surface. The surfaces of the gas passages are treated with hydrophobic treatment, and surfaces of the liquor passages are treated with hydrophilic treatment.    USE - Electrode structure for separating delivering gas and fluid in passive fuel cell (claimed)for portable electronic device such as notebook computer, personal digital assistant (PDA) and mobile phone.    ADVANTAGE - The pores of the gas passage are treated with hydrophobic treatment to separate the two phases of gas and liquid and the droplets can be automatically introduced into the liquor passage portion. Thus the flow of the two phases of gas and liquid can be effectively separated, and the fluid is rapidly taken away from the reaction zone of the cell. The manufacturing process of the passive fuel cell is easily modified or designed. The waste water can be reclaimed and cycled for wetting the proton exchange film to avoid the moisture deprivation and loss of function. The waste water can be reclaimed for diluting the methanol solution of the anode plate, so that a requirement of an external water storage tank of the passive fuel cell is saved. The waste water can be reclaimed for heat dissipation during heat exchange, when the passive fuel cell is operated in a high temperature environment. The paths of fluid and gas can be easily separated through the hydrophilic and hydrophobic treatment, and not enter to block the passage, even if the fluid drop falls on the gas passage.    DETAILED DESCRIPTION - The hydrophobic material layer is a PTFE, Teflon (RTM: PTFE invented at Dupont company) layer or a stacked layer formed of a metal film layer and a self-assembled Monolayer (SAM). The hydrophilic material layer is a silicon dioxide layer. An INDEPENDENT CLAIM is included for passive fuel cell.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the passive fuel cell.    Passive fuel cell (20)    Anode plate (21)    Water removal plate (24)    Liquor passages (241)    Gas passages (243)