The roles of nickel/manganese in electrochemical cycling of lithium-rich Mn-based nickel cathode materials
Ionics, ISSN: 1862-0760, Vol: 21, Issue: 12, Page: 3295-3300
2015
- 9Citations
- 10Captures
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Article Description
Lithium-rich oxides have attracted much attention due to their potential application as cathode materials in lithium ion batteries, but still suffer from voltage decay and capacity fading upon cycling. Understanding the effect of active-mass elements on the deterioration of cycling performance would be beneficial for finding a suitable route to address these challenging problems. Herein, a Li-rich Mn-based nickel oxide LiMnNiO was synthesized. We have mainly employed dQ/dV plots to elucidate the electrochemical process changes during cycling. Our results demonstrate that the influence of Ni is more sensitive than that of Mn, and the Ni redox peak is gradually disappeared upon cycling, but the electrode reaction of Mn is relatively stable with the shape of the corresponding dQ/dV plots are unchanged, though a small shift to low potential occurs. Moreover, the capacity contribution of Ni is decreased with the extent of cycling, but the capacity contribution of Mn is increased.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84947616359&origin=inward; http://dx.doi.org/10.1007/s11581-015-1575-z; http://link.springer.com/10.1007/s11581-015-1575-z; http://link.springer.com/content/pdf/10.1007/s11581-015-1575-z; http://link.springer.com/content/pdf/10.1007/s11581-015-1575-z.pdf; http://link.springer.com/article/10.1007/s11581-015-1575-z/fulltext.html; https://dx.doi.org/10.1007/s11581-015-1575-z; https://link.springer.com/article/10.1007%2Fs11581-015-1575-z
Springer Science and Business Media LLC
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