| abstract |
Provided are high power and high kinetic electrodes for electrochemical devices employing non-aqueous organic electrolyte, solid polymer electrolyte or the like, based upon electric ally active materials structured as discrete contacting mesoporous microparticles with a bimodal pore size distribution, which in addition may contain conductive nanofibres, other active metal inclusions or further coatings, that are linked together by highly porous organic binders and a percolating network of conductive particles and polymers, wherein the microparticles have a first average pore size up to 5 nm and a second average pore size differing by at least about 5 nm. The porous solid microparticles produced hereby are comprising a three dimensionally substantially continuous inter-penetration network of interconnected pores. The preferred size of the microparticles is 0.05 νm to 30 νm and their preferred specific surface area is 0.01 m2/g to 300 m2/g. Also provided are processes for preparing these bimodal mesoporous microparticles, for coating selectively their surface with binder and conductors, for forming such porous high kinetics electrodes in a flexible form and uses thereof in various electrochemical devices. |