NOVELTY - A fuel cell (100) comprises an anode (110), a cathode (120), a microfluidic channel contiguous with at least one of anode and cathode, and a single flowing electrolyte, which passes through microfluidic channel.    USE - In fuel cell stack, power supply device and electronic device; and in portable and mobile fuel cell systems such as cellular phones, laptop computers, DVD players, televisions, personal data assistants (PDAs), calculators, pagers, hand-held video games, remote controls, cassette players, CD players, radios, audio players, audio recorders, video recorders, cameras, navigation systems, and wristwatches.    ADVANTAGE - The fuel cells provides increased simplicity and smaller physical dimension.    DETAILED DESCRIPTION - A fuel cell comprises an anode, a cathode, a microfluidic channel contiguous with at least one of anode and cathode, and a single flowing electrolyte, which passes through microfluidic channel. The fuel cell further comprises a first electrode, a second electrode, and a single flowing electrolyte in contact with at least one of the first and second electrodes; where ions travel from first electrode to second electrode without traversing a membrane. The cathode and the anode comprises a gas diffusion electrode. The flowing electrolyte comprises a fuel and oxidant. The oxidant comprises air or oxygen gas. The cathode further comprises a hydraulic barrier. The anode is in convective contact with the fuel. The fuel comprises hydrogen gas or methanol gas. The anode further comprises a hydraulic barrier. The flowing electrolyte comprises. The fuel cell further comprises a stationary electrolyte between anode and cathode. An INDEPENDENT CLAIM is included for generating electricity involving, flowing a single electrolyte through a microfluidic channel, the microfluidic channel is in fuel cell; oxidizing a fuel at the anode; and reducing an oxidant at cathode; where electrolyte comprises fuel or oxidant.    DESCRIPTION OF DRAWING(S) - The figure shows the schematic view of fuel cell.    Fuel cell (100)    Anode (110)    Anode catalyst (112)    Cathode (120)    Cathode catalyst. (122)