MECHANISMS OF THE REVERSIBLE ELECTROCHEMICAL INSERTION OF LITHIUM OCCURRING WITH NCIM_s (NANO-CRYSTALLITE INSERTION-MATERIALS)

A new family of insertion‐compound electrodes, so called NCIM s (Nano‐Crystallite‐Insertion‐Materials) has been proposed: the major requirement is that the electrode materials have to be polycrystalline with a crystallite and particle size as small as possible (the accepted definition being that man...

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Bibliographic Details
Published in:Active and Passive Electronic Components 1995-12, Vol.1995 (1), p.69-72
Main Authors: Han, S. D., Treuil, N., Campet, G., Portier, J., Delmas, C., Lassègues, J. C., Pierre, A.
Format: Article
Language:English
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Summary:A new family of insertion‐compound electrodes, so called NCIM s (Nano‐Crystallite‐Insertion‐Materials) has been proposed: the major requirement is that the electrode materials have to be polycrystalline with a crystallite and particle size as small as possible (the accepted definition being that many crystallites make a particle). Indeed, by minimizing the size of the crystallites, the formation of defects is favored, particularly at the crystallite surface, acting as reversible (de)grafting sites of Li + . Also, the cation‐anion bonding is weakened not only in the grain boundary region but also within the crystallite close to its surface: then the electrochemical insertion of Li + takes place through easy bonding rearrangements.
ISSN:0882-7516
1563-5031
DOI:10.1155/1995/86802