Insertion Silicate Electrodes

More recently than LiFeP04 and related phosphate compounds, the search for new cathode materials has been extended to lithium transition metal silicates. Again, these solids are characterized by a poor electric conductivity that made them being considered useless for this purpose. Probably as a consequence of the successful practical application of lithium iron 

28 APPLICATIONS OF MOSSB AUER SPECTROSCOPY IN THE STUDY OF LITHIUM BATTERY MATERIALS 

Further extraction at higher voltages could be possible provided that a sufficiently stable electrolyte is found. By using nanoparticulate materials, a discharge capacity of 100 mAh g at a current density of 2C has been reported [15]. 

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An alternative to in situ polymerization involves direct intercalation of macromolecules into layered structures. Silicates are most often used. The insertion of polymer molecules into layered host lattices is of interest from different points of view. First, this insertion process leads to the construction of organic-inorganic polylayered composites. Second, the intercalation physical chemistry by itself and the role intercalation plays in the gain of electronic conductivity are of interest. This becomes important in the construction of reversible electrodes " or when improving the physicomechanical properties of nylon-layered silicate nanocomposites, hybrid epoxide clay composites," and nanomaterials based on hectorite and polyaniline, polythiophene or polypyrrole. ... 

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