Systems and methods for optimizing performance in a computing environment are provided. While the backwash fluid is pumped within the accumulator, an inert gas inside the bladder is compressed against the inside walls of the accumulator. The anode current collector has at least one fuel gas inlet channel having an opening that faces an opening of the fuel gas inlet hole at an end of the fuel gas inlet hole, for allowing the fuel gas supplied through the fuel gas inlet hole to flow into the anode current collector. The electrode includes a branch portion, a frame connected to the branch portion, and a plurality of first slits defined by the frame and the branch portion, away from the inner surface of the pixel area.