Synthesis and properties of nanostructured LiNi1/3Co1/3Mn1/3O2 as cathode with lithium bis(oxalate)borate-based electrolyte to improve cycle performance in Li-ion battery
Nanostructure-LiNi1/3Co1/3Mn1/3O2 (NCMa) has been successfully synthesized via a facile chemistry method using a cheap chelating agent of acetic acid. The NCMa has low cation mixing between Li+ and Ni2+ and exhibits a diameter of 100–300 nm. Specifically, the as-prepared particles NCMa with unique n...
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Veröffentlicht in: | Journal of alloys and compounds 2017-11, Vol.723, p.887-893 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Nanostructure-LiNi1/3Co1/3Mn1/3O2 (NCMa) has been successfully synthesized via a facile chemistry method using a cheap chelating agent of acetic acid. The NCMa has low cation mixing between Li+ and Ni2+ and exhibits a diameter of 100–300 nm. Specifically, the as-prepared particles NCMa with unique nano structure can increase the contact area with electrolyte, shorten Li+ diffusion path and thus improve the Li+ mobility. In addition, to reduce the adverse effect caused by NCMa, lithium bis(oxalate)borate (LiBOB) instead of LiPF6 has been used as electrolyte salt to enhance the cycling of NCMa, due to the fact that LiBOB will generate relatively little acid in electrolyte. Furthermore, it is interest to note that LiBOB leads to forming a relative stable passivation film on the surface of NCMa cathode. Hence, compared with LiPF6, NCMa will generate remarkable electrochemical lithium storage properties in terms of high capacity, excellent rate capability and ultrastable long-term cycling performance.
•Acetic acid (AC) was first used as complexing agent to prepare NCMa powder.•NCMa shows an ultra-fast charge and discharge capability.•The LiBOB-based electrolyte can sustain NCMa cycling without apparent capacity loss. |
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ISSN: | 0925-8388 1873-4669 |
DOI: | 10.1016/j.jallcom.2017.06.151 |