Kinetic study on Li2.8(V0.9Ge0.1)2(PO4)3 by EIS measurement

Liu, Suqin; Li, Shicai; Huang, Kelong; Gong, Bin; Zhang, Ge

doi:10.1016/j.jallcom.2006.11.131

Cited by 41 publications

(23 citation statements)

References 11 publications

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“…5(b). From the figure, a clear reduction current can be seen to arise at 0.85 V (vs. Li/Li + ) clearly due to the reduction of LAGP, which may indicate that the LAGP start to reduction at 0.85 V (vs. Li/Li + ), causing the change in electronic conductivity [12][13][14][15].…”

Section: Resultsmentioning

confidence: 95%

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Lithium storage capability of lithium ion conductor Li1.5Al0.5Ge1.5(PO4)3

Feng

Lai

2010

Journal of Alloys and Compounds

132

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Section: Resultsmentioning

confidence: 95%

“…and A = Al, La, In, Cr, etc.) [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. However, since they consist of Ti 4+ ions, they are easy to be reduced when they are in contact with lithium metal, hence limiting their applications [5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Lithium storage capability of lithium ion conductor Li1.5Al0.5Ge1.5(PO4)3

Feng

Lai

2010

Journal of Alloys and Compounds

132

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“…Here n is the initial slope of the Nyquist plot and determines the depression of the capacitive semicircle [36]. Table 3 shows n N1 = 0.85 and n N2 = 0.83.…”

Section: Electrochemical Impedance Spectroscopymentioning

confidence: 99%

Synthesis, characterization and electrochemical performances of γ-Fe2O3 cathode material for Li-ion batteries

Abbasi

Mirhabibi

Arabi³

et al. 2016

J Mater Sci: Mater Electron

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Maghemite nanoparticles were successfully synthesized via a co-precipitation method and electrochemical-optical properties of three different sizes were studied. Using this material as a Li-ion battery cathode, the results of charge-discharge tests showed that decreasing the maghemite particle size increased the lithium hosting capacity. First discharge capacities for cathodes made of material of particle size 11 and 19 nm were 206 and 186 mAh g -1 respectively, while for micron-sized cathode material a discharge capacity of 26 mAh g -1 was obtained. Electrochemical impedance spectroscopy (EIS) was used to derive equivalent circuit elements, which confirmed a reduction in lithium insertion resistance for material with a smaller particle size. EIS investigations disclosed that the R ct and Z W reduced with reduction of particle size, which indicates cathode material with lower particle size is more suitable. Band-gaps of the materials were determined using the diffuse reflectance spectroscopy technique on the base of Kubelka-Munk theory. The results showed that the needed energy for electron conduction reduces with reduction of particle size, which results in capacity enhancement.

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“…In the circuit, the R e represents the ohmic resistance of the electrolyte and electrode, as the intercept impedance on the z-axis. The R f represents the film resistance of Li + diffusion in the film of the electrode surface [22]. R ct represents the charge transfer resistance of electrochemical reaction, and the Z w represents the diffusion-controlled Warburg impedance [23].…”

Section: Metal-doped Lifepo4mentioning

confidence: 99%