Designing a highly efficient catalyst is quite vital to improve the electrochemical performance of rechargeable Li-O2 batteries for long-term cycling. The MnOx/C composites, employed as a cathode catalysts in Li-O2 cells, were fabricated by ultrasonic spray pyrolysis (USP) using dextrose and manganese salts as precursors. It was found that the spherical shapes of the MnOx/C particles were influenced by the type of manganese salts, speed of gas flow, and the pyrolysis temperature. The physical characteristics and electrochemical performance of the MnOx/C composites was investigated using X-ray diffraction, scanning electron microscopy, particle size analysis, thermal analysis, BET measurements, charge-discharge tests and rotating ring disc electrode experiments (RRDE). Using the RRDE data, the kinetic parameters were determined and used to suggest a possible reaction mechanism for the oxygen reduction reaction (ORR) on the O2 electrode.

Electrochemical performance of MnO<sub>x</sub>/C cathode in rechargeable Li-O<sub>2</sub> batteries

248th National Meeting (2014)

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Electrochemical performance of MnOx/C cathode in rechargeable Li-O2 batteries

Electrochemical performance of MnO_x/C cathode in rechargeable Li-O₂ batteries