as total power output stack dimensions and cost it is generally recommended but not limited to the reduction rate in the number of cells follows the reactant gas consumption rate or the reactant molecules consumption rate which inversely correspond to the gas or reactant molecules utilization rates in such a manner a nearly constant gas flow rate or reactant molecules can be attained over the entire stack from its first to last sections the reduction in the number of cells can also follow the method to be described in detail below in order to maintain a higher and constant local reactant stoichiometry the division of the stack into several sections according to the present invention will also lead to improved uniformity in reactant gas distribution in individual cells in the stack as the stack sections are shorter the fuel cell stack according to the present invention will allow a significant reduction of the reactant stoichiometry particularly the cathode air as mentioned earlier the prior art fuel cell stacks must be operated with an air stoichiometry of as high as 3 to 4 or even higher in order to enhance oxygen transfer and remove water and thus achieve better cell performance as a result the prior art fuel cell systems usually require a cathode air blower or compressor to deliver the required large air supply rate which has been responsible for a significant portion of the parasitic power consumption the parasitic power consumption for the air.