ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Spherical Li[Ni(1/3-x)Mn(1/3-x)Co(1/3-x)Mx]O2 (M=Fe, Mg, Al) precursor powders were synthesized byultrasonic spray pyrolysis using aqueous solution of metal nitrate. X-ray diffraction (XRD),scanning electron microscope (SEM), BET method using N2 adsorption analysis and Battery testerwere used for determination of the composition, morphology, particle size, surface area andelectrochemical properties. SEM observation showed that the size of as-prepared particles wereabout 0.9 μ with narrow size distribution. The crystal phase of Li[Ni(1/3-x)Mn(1/3-x)Co(1/3-x)Mx]O2(M=Fe, Mg, Al) was resulted in layered rock salt structure with R3m space group by calcinations at1023 K for 10 h. No impurity-related peaks are observed from the XRD pattern with various dopingmetals. Mg and Al doped Li(Ni1/3Co1/3Mn1/3)O2 showed very good cycling stability. The Mgsubstitution for Ni led to the most excellent. On the other hand, the capacity degradation duringcycling was observed by Fe substitution for Mn doped Li(Ni1/3Co1/3Mn1/3)O2
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.350.203.pdf
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