Li / Li1 + x V 3 O 8 Secondary Batteries: III . Further Characterization of the Mechanism of Li+ Insertion and of the Cycling Behavior

• DOI: 10.1149/1.2113813
• Publication Date: 2006-06-14T18:46:50Z
• Authors: G. Pistoia; M. Pasquali; M. Tocci; R. V. Moshtev; V. Maner
• Keywords: Cycling

The reduction mechanism of the bronze in nonaqueous Li cells has been elucidated. Upon Li+ insertion, a solid solution is formed with an upper composition . Within this range, progressively fills tetrahedral sites available unit cell. Four such are supposed to be filled at limit. Beyond this, new phase nucleated accommodate excess Li+, resulting constant cell's OCV. insertions not greater than 3.0 eq/mol reversible, as shown by cycling behavior and x‐ray patterns. Owing outstanding structure stability high speed diffusion , extended rates achievable based on bronze. 445 cycles discharge variable range 2–10 mA/cm2 have obtained.