In situ Raman microscopy of individual LiNi(sub 0.8)Co(sub 0.15)Al(sub 0.05)O(sub 2) particles in a Li-ion battery composite cathode

Article Abstract:

The local kinetic behavior of individual LiNi(sub 0.8)Co(sub 0.15)A1(sub 0.05)O(sub 2) particles toward Li(super +) intercalation-deinercalation in composite cathodes was studied in situ by Raman microscopy during electrochemical charge-discharge cycles in 1.2-M LiPF(sub 6) EC-EMC, 3:7 by volume. The local microphenomena are responsible for uneven performance of the cathode and lead to overall electrode impedance increase and contribute to the mechanism of lithium-ion cell failure.

Nickel Compounds, Usage, Chemical reaction, Rate of, Chemical kinetics, Raman spectroscopy

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Heating behavior and crystal growth mechanism in microwave field

Article Abstract:

A simple microwave solid-state reactor was designed, based on a domestic microwave oven, and the heating behavior of the reactor was studied to monitor the real-time temperature during irradiation. Results found that the temperature was related to the time and that microwave power depended on the duty cycle of microwave irradiation.

Irradiation, Microwaves, Irradiation (Radiation exposure)

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Microwave solid-state synthesis of LiV3O8 as cathode material for lithium batteries

Article Abstract:

A novel, and economical microwave route is developed for the synthesis of electrochemically active LiV3O8 material by using a domestic microwave oven. The heating behavior of the designed reaction system guided the preparation of LiV3O8 at a suitable irradiation power, reaction time, and temperature.

Electrochemistry, Vanadium compounds

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