Characterization of high-power lithium-ion cells during constant current cycling

Shim, Joongpyo; Striebel, Kathryn A.

doi:10.1016/s0378-7753(03)00351-3

Cited by 59 publications

(38 citation statements)

References 20 publications

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“…Cells were cycled with a taper charge to 4.1 V and a discharge to either 70 or 100% DOD at room temperature or 60°C. The cycle performance for these cells as well as electrochemical diagnostics and some early diagnostics of the high-temperature cells has been reported previously [7,8]. With a wider swing in SOC during cycling, these cells were seen to loose power and capacity at a much faster rate than the ATD cells.…”

Section: Introductionmentioning

confidence: 57%

“…Post-test electrochemical diagnostic studies of each electrode were carried out with 1 cm 2 electrodes at C/25 in half-cells with a Li RE and CE, as discussed previously [7,8]. The first charge for the cathode post-test reveals the amount of cycleable lithium remaining in the cell, since all of the anodes were completely discharged upon removal from the cells (E vs. Li > 2V).…”

Section: Electrochemical Analysis Of the Cathode And Anodementioning

confidence: 99%

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Diagnostic Analysis of Electrodes from High-Power Lithium-Ion Cells Cycled under Different Conditions

Striebel

Shim

Cairns

et al. 2004

J. Electrochem. Soc.

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Both capacity fade and impedance rise were found to increase with cycling temperature and the span of the DOD. The loss of cycleable Li, most likely due to solvent reduction on the anode, was linear in cell test time and the room temperature cells showed an SEI composition and degree of graphite disorder that roughly correlated with the extent of the Li consumption. However, electrochemical analysis showed that the cathode was controlling the performance loss in the cell. TEM and NMR showed evidence of crystalline defects and degradation of the Li-Ni environment, respectively, though no major new phases were identified, in agreement with the XRD results. FTIR analysis of the cathode revealed no evidence of polymeric deposits on the cathode particles although both Raman and TEM showed evidence of P-containing deposits. Raman mapping showed a noticeable change of the active material/carbon surface concentration ratio for the cathode cycled 1000 times at 100% DOD as compared with that cycled to 70% DOD.

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Section: Introductionmentioning

confidence: 57%

Section: Electrochemical Analysis Of the Cathode And Anodementioning

confidence: 99%

Diagnostic Analysis of Electrodes from High-Power Lithium-Ion Cells Cycled under Different Conditions

Striebel

Shim

Cairns

et al. 2004

J. Electrochem. Soc.

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“…A reference performance test (RPT) with high pulse of discharge 5C and charge 3.75C was carried out every 80 cycles to monitor the pulse power capability of the cell. More details of the manufacturing process and test protocol were described in previous work [5]. After cycling, the pouch cell was disassembled in the fully discharged state and each electrode was washed in DEC before electrochemical and other analysis in the glovebox.…”

Section: Methodsmentioning

confidence: 99%

The development of low cost LiFePO4-based high power lithium-ion batteries

Striebel

Shim

Sierra

et al. 2005

Journal of Power Sources

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164

100

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The cycling performance of low-cost LiFePO 4 -based high-power lithium-ion cells was investigated and the components were analyzed after cycling to determine capacity fade mechanisms. Pouch type LiFePO 4 /natural graphite cells were assembled and evaluated by constant C/2 cycling, pulse-power and impedance measurements. From post-test electrochemical analysis after cycling, active materials, LiFePO 4 and natural graphite, showed no degradation structurally or electrochemically. The main reasons for the capacity fade of cell were lithium inventory loss by side reaction and possible lithium deposition on the anode.

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“…The critical importance of the electronic conductivity for battery performance has been shown several times. [2][3][4][5][6][7][8][9][10] However, no pertinent investigation of the electronic conductivity within composite electrodes has been addressed up to now, because it is a very difficult task. The dc transverse electronic conductivity, s dc , has been the only measured quantity to date.…”

Section: Introductionmentioning

confidence: 99%

A Multiscale Description of the Electronic Transport within the Hierarchical Architecture of a Composite Electrode for Lithium Batteries

Badot

Ligneel

Dubrunfaut

et al. 2009

Adv Funct Materials

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International audienceThe broadband dielectric spectroscopy technique is applied, for the first time, to a composite material used as an electrode for lithium battery. The electrical properties (permittivity and conductivity) are measured from low (a few Hz) to microwave (a few GHz) frequencies. The results demonstrate that the broadband dielectric spectroscopy technique is very sensitive to the different scales of the electrode architecture involved in electronic transport, from interatomic distances to macroscopic sizes, as well as to the morphology at these scales, coarse or fine distribution of the constituents. This work opens up new prospects for a more fundamental understanding and more rational optimization of the electronic transport in composite electrodes for lithium batteries and other electrochemical energy storage technologies (including other batteries, supercapacitors, low- and medium-temperature fuel cells), electrochemical sensors and conductor-insulator composite materials

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Characterization of high-power lithium-ion cells during constant current cycling

Abstract: Twelve-cm 2 pouch type lithium-ion cells were assembled with graphite anodes,

Cited by 59 publications

References 20 publications

Diagnostic Analysis of Electrodes from High-Power Lithium-Ion Cells Cycled under Different Conditions

Diagnostic Analysis of Electrodes from High-Power Lithium-Ion Cells Cycled under Different Conditions

The development of low cost LiFePO4-based high power lithium-ion batteries

A Multiscale Description of the Electronic Transport within the Hierarchical Architecture of a Composite Electrode for Lithium Batteries

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