| abstract |
Compositions for use in electrochemical redox reactions are described. The composition may comprise a substance represented by the general formula M y XO 4 or A x M y XO 4 , where A (if present), M, and X each independently represent at least one element, O stands for oxygen, x (if present) and y represent a number, and an oxide of at least one of various elements, respectively, the material and the oxide are co-crystalline, and / or the volume of the crystalline structural units of the composition It may differ from the volume of only one crystalline structural unit. Electrodes comprising such compositions are also described, and electrochemical cells comprising such electrodes are also described. Also described are methods of preparing the compositions for use in electrochemical redox reactions.n n n n Electrochemical redox reaction |