摘要:
The present invention relates to a process for producing a fuel cell, comprising a step of forming a plurality of holes (10) in at least two substrates (9); each hole is in the seat of an individual fuel cell, the said holes having a particular geometry, such as a shape of a truncated cone or a truncated pyramid shape. The various individual cells are then electrically connected by networks of electrical connections (11, 12) and are supplied via a reactant distribution network, the assembly formed by a substrate (9), the cells and the networks constituting a base module (9′). Finally, at least two base modules (9′) are assembled, the individual cells of each base module being positioned facing the individual cells of the adjacent base module(s).
摘要:
The invention relates to the preparation of insertion compounds based on manganese oxide, usable as the positive electrode active material in a lithium battery. These compounds in the hatched area of FIG. 1 can be prepared by reacting in the solid state a manganese oxide powder MnO.sub.2 -.beta., having a specific surface below 7 m.sup.2 /g and an average grain size below 10 .mu.m, with a powder of a lithium compound such as Li.sub.2 CO.sub.3 or LiOH, at a temperature of 150.degree. to 500.degree. C. for an adequate time to convert the .beta.-MnO.sub.2 into manganese and lithium oxide having a lacunary or stoichiometric spinel structure.