| Structural and Conductivity Studies of LiCo1–xMnxO2
Cathode Materials |
Vagmare Gangadhar, Chiliveri Shankaraiah and Guduru Prasad*
Pages : 26-29
DOI : 10.1080/0371750X.2018.1446847 |
| Abstract |
| Present work aims at improving the characteristics of cathode material
LiCo1–xMnxO2 for Li-battery by increasing the concentration of manganese. The
titled compound LiCo1–xMnxO2 (x=0.0(LCO), 0.2(LCM2), 0.4(LCM4), 0.6(LCM6),
0.8(LCM8) and 1.0(LMO)) is prepared by solid state and sol-gel reaction methods.
The structural studies of all the powders calcined at 850oC temperature for 20 h in
the air are undertaken through powder X-ray diffraction. The diffraction patterns
of these compounds are consistent with the reported patterns and exhibit
predominant peak (0 0 3) orientation at 2 = 19.08o and also other characteristic
planes. The lattice parameters and the density are also reported. The surface
morphological studies carried out using scanning electron microscope indicates
average grain size of around 600 nm. FTIR studies show characteristic vibrations
at 253, 304, 823, 1402 and 1619 cm–1 in the material. DC conductivity studies of
the samples are measured from room temperature to 500oC and activation energies
are calculated. These results are interpreted to understand the charge transport
in the material.
[Keywords: Solid state reaction, Sol-gel method, X-ray diffraction, FTIR, DC
conductivity, Energy conversion] |
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