Li-rich layered materials hold lots of promise as cathode for next-generation high performance Li-ion batteries. In this contribution, surface-modified layer-structured Li[Li0.2Ni0.17Co0.07Mn0.56]O2 (Li-rich) nanoparticles are employed as cathode for Li storage and transport studies. The results demonstrate that 1wt.% MgF2-modified Li-rich electrode exhibits the best cycling capability, with capacity retention ratio of 86% after 50 cycles, much higher than that of pristine one (only 66%). In the meantime, the 1wt.% MgF2 surface modified Li-rich electrode shows superior rate performance and thermal abuse treatments as well. Subsequent investigation indicates that the coated MgF2 layer can suppress the undesirable growth of solid electrolyte interphase (SEI) film and enhance the structure stability upon cycling. This coating technique provides the potentially rewarding avenue towards the development of high capacity Li-ion cathodes.
Solid State Ionics – Elsevier
Published: Oct 1, 2015
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.
All for just $49/month
It’s easy to organize your research with our built-in tools.
All the latest content is available, no embargo periods.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud