Relationship between the electrochemical behavior and Li arrangement in Li(sub x)M(sub y)Mn(sub 2-y)O4 (M = Co, Cr) with spinel structure

Article Abstract:

The relationship between the electrochemical behavior and the arrangement of lithium/vacancies are examined with electrochemical Li removal in Li(sub x)M(sub y)Mn(sub 2-y)O4 (x<=1.0, 0.0<=y<=0.3, M = Co, Cr). The electrochemical behavior in spinel LiMn2O4 is deeply related to the Coulombic interactions, which is proved by the fact that experimentally observed changes in entropy has agreed well with Monte Carlo simulation based on the Coulombic interaction.

Manganese Compounds, Monte Carlo method, Monte Carlo methods, Electrochemical reactions

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Investigation on the arrangement of lithium ions in Li(sub x)La1/3NbO3 with perovskite structure

Article Abstract:

The relationship between the Lithium ion arrangement and the electrochemical behavior is examined as a function of composition x, in electrochemically lithiated A-site deficient perovskite, Li(sub x)La1/3NbO3. The cell potential diagram and powder X-ray diffraction (XRD) study indicated that the Li ions are inserted into the vacant Perovskite A-site with an electrochemical reaction.

Japan, Science & research, Research, Observations, Electric properties, X-rays, X-ray diffraction, Electrochemistry, Perovskite

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Direct in situ observation of dynamic transport for electrolyte components by NMR combined with electrochemical measurements

Article Abstract:

The lithium transport in an electrolyte including a lithium salt is calculated using electrophoretic NMR (ENMR) with non-blocking electrodes. The results have shown an enhanced dynamic lithium transport for the first time in the bulk electrolyte under an electric field closely related to real conditions in a rechargeable lithium battery.

Nuclear magnetic resonance, Electrolytes, Electrochemical analysis

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