Ultralife’s polymer electrolyte rechargeable lithium-ion batteries for use in the mobile electronics industry

Cuellar, Edward A.; Manna, Michael E; Wise, Ralph D; Gavrilov, A.B.; Bastian, Matthew J.; Brey, Rufus M.; DeMatteis, J.

doi:10.1016/s0378-7753(00)00680-7

Cited by 11 publications

(4 citation statements)

References 1 publication

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“…However, as will be seen in the next section, the slopes of the plots in this figure correlate with the active material loading. UltraLife reports that 90% of capacity is deliverable at up to 5C [8]. Extrapolation of the data in Fig.…”

Section: Variable-rate Cyclesmentioning

confidence: 87%

“…Seven bi-cells (dual-sided anode between two single-sided cathodes) make up the cell pack with the back-to-back expanded metal Al current collectors providing direct inplane connectivity. Many aspects of this cell have been reported [8]. The cells received contained a Raychem LR-380 PPTC (polymer positive thermal coefficient) device for safety shut down and for most studies this circuit was left intact.…”

Section: Ultralife Cellsmentioning

confidence: 99%

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Performance and degradation evaluation of five different commercial lithium-ion cells

Striebel¹,

Shim²

2004

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The initial performance of five different types of Li-ion rechargeable batteries, from Quallion Corp, UltraLife Battery and Toshiba, was measured and compared. Cell characterization included variable-rate constant-current cycling, various USDOE pulsetest protocols and full-spectrum electrochemical impedance spectroscopy. Changes in impedance and capacity were monitored during electrochemical cycling under various conditions, including constant-current cycling over 100% DOD at a range of temperature and pulse profile cycling over a very narrow range of DOD at room temperature. All cells were found to maintain more than 80% of their rated capacity for more than 400 constant current 100% DOD cycles. The power fade (or impedance rise) of the cells varied considerably. New methods for interpreting the pulse resistance data were evaluated for their usefulness in interpreting performance mechanism as a function of test protocol and cell design.

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Section: Variable-rate Cyclesmentioning

confidence: 87%

Section: Ultralife Cellsmentioning

confidence: 99%

Performance and degradation evaluation of five different commercial lithium-ion cells

Striebel¹,

Shim²

2004

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“…Lithium ion secondary batteries have been widely used as an electric power source for cellular phones, notebook computers and digital cameras because of their high energy density 1) . These batteries have a problem with the deterioration the performance after long-term use 2) .…”

Section: Introductionmentioning

confidence: 99%

Deterioration of Lithium Ion Battery Performance due to Film Formation on Graphite Surfaces

et al. 2013

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It is known that the performance of lithium ion batteries deteriorates as number of cycles increases. In order to investigate the reason for this the deterioration, the surface coverage ofˆlm formation was measured for graphite electrodes with diŠerent stages of number of cycles. Simultaneously, the gas desorption amount was measured. As the number of cycles increased, so did the surface coverage. The gas desorption amount was roughly proportional to the surface coverage. A polymer-coating changes the characteristics of theˆlm, battery performance and gas desorption. These results suggest that deterioration in the battery performance is owing toˆlm formation because theˆlm blocks lithium ion ‰ow at the graphite surface. The expansion of the battery case is owing to gas desorption from the surfaceˆlm. In this study, the reasons for battery performance are claried.

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“…Lithium ion secondary battery has been widely used as an electric power source for cellular phones, notebook computers and digital camera 1) . It was well known the batteries expanded in the elevated temperature 2) .…”

Section: Introductionmentioning

confidence: 99%

Gas Desorption Behavior of Graphite Anode in Lithium Ion Secondary Battery and its Effect on the Battery Performance

2012

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As the anode material, natural graphite, polymer-coated natural graphite, carbon-coated natural graphite and artiˆcial graphite were employed. In order to examine the eŠect of solid electrolyte interface (SEI), these samples were exposed to the cycles of charge/discharge. The gas desorption behavior of these samples was investigated by using a technique of thermal desorption spectroscopy. The amount of desorbed gasses signiˆcantly increased after a charge/discharge cycle. The increase of the desorbed amount was associated with gas desorption from SEI formed in theˆrst cycle. The amount of desorbed gasses increases with an irreversible capacity in theˆrst charge/discharge cycle. The irreversible capacity of surface-coated graphite and artiˆcial graphite was lower than that of natural graphite. The surface coating resulted in the decrease of the amount of desorbed gasses and irreversible capacity. The atomic composition was measured by auger electron spectroscopy. Carbon, Oxygen, ‰uorine and phosphorus were observed after a charge/discharge cycle.

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Ultralife’s polymer electrolyte rechargeable lithium-ion batteries for use in the mobile electronics industry

Cited by 11 publications

References 1 publication

Performance and degradation evaluation of five different commercial lithium-ion cells

Performance and degradation evaluation of five different commercial lithium-ion cells

Deterioration of Lithium Ion Battery Performance due to Film Formation on Graphite Surfaces

Gas Desorption Behavior of Graphite Anode in Lithium Ion Secondary Battery and its Effect on the Battery Performance

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