Abstract
The differential capacity and coulombic efficiency of blended Li/LiMn2O4-Li[Ni1/3Mn1/3Co1/3]O2 half cells were examined using high-precision constant-current chronopoteniometry. The experiments showed that the addition of even modest amounts of Li[Ni1/3Mn1/3Co1/3]O2 to the relatively low energy density LiMn2O4 electrodes produced a significant improvement in capacity retention. Li[Ni1/3Mn1/3Co1/3]O2 was also found to help suppress Mn dissolution from LiMn2O4, and a correlation between Mn dissolution, capacity retention and coulombic efficiency was found. The retained Mn ions reduce the increase of x in Li1+xMn2-xO4 at the particle surfaces. If x in Li1+xMn2-xO4 increases, a more Li rich, lower capacity material results, so by suppressing the increase of x, better capacity retention results.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
