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Applying intermittent current (>1 mA/cm 2) enhances O 2 diffusion in the electrode. The battery capacity is increased by more than 50% with intermittent discharge. Hydrophilic electrodes benefit the most from the intermittent discharge strategy. Discharging with descending currents maximizes capacity with a given cutoff voltage.
The intermittent discharge current can enhance the O 2 diffusion and increase the discharge capacity due to sufficient O 2 supply. Battery stacks for transportation or stationary applications will likely be composed of thousands of single cells.
In this study, intermittent discharge strategies were proposed and investigated for Li-O 2 batteries with electrodes of different wettability at various current densities (0.1–2.0 mA/cm 2 ), and compared with batteries discharged at continuous current densities.
The specific discharge capacities of Li-O 2 batteries discharged by intermittent current are ∼50% higher than these obtained by continuous current. For example, the specific discharge capacity is 1629.5 ± 124.0 mAh/g at intermittent discharge current of 1.0 mA/cm 2 while it is 1031.0 ± 22.8 mAh/g at continuous discharge current of 1.0 mA/cm 2.
The intermittent discharge strategy Since electrode is compressed when assembling the battery, the porous structure inside the electrode may be changed and thus the O 2 diffusion is affected. The estimated time schedule of discharging for 5 min and resting for 10 min may not be the best strategy.
The intermittent current strategy discharges the battery at the given current for certain time and rests the battery for 10 min periodically. The time for discharge is proportional to the given current. For example, the battery is discharged for 10 min at 0.5 mA/cm 2 and for 5 min at 1.0 mA/cm 2.
One such class of techniques exploiting the battery recovery effect phenomenon claims that performing an intermittent discharge instead of a continuous discharge will increase the usable...
During discharge lithium intercalates into the structure of the positive electrode and increase its resistance. Measured results reveal a drastic change in the electronic …
The most commonly used lithium-ion battery models are grouped as four types: equivalent circuit model (ECM), fractional order model (FOM), electrochemical model (EM), …
The galvanostatic intermittent titration technique (GITT) is the state-of-the-art method for determining the Li+ diffusion coefficients in battery materials.
Standby lead acid batteries maintained under a constant float voltage to compensate self-discharge often encounter the problem of short service life. One of the reasons limiting battery …
A novel electroanalytical method, the intermittent current interruption (ICI) technique, has recently been promoted as a versatile tool for battery analysis and diagnostics. …
The intermittent current interruption (ICI) method was proposed to monitor the battery status for photovoltaic systems [29] and then applied for lithium sulfur battery …
During a battery discharge test (lead acid 12v 190amp) 1 battery in a string of 40 has deteriorated so much that it is hating up a lot quicker than other battery''s in the string, for example the rest of the battery''s will be …
Herein, we demonstrated a rechargeable lithium battery based on nanosized NiFe-PBA [NiHCF for short, HCF: hexacyanoferrate, Fe(CN) 6] as cathode and metallic lithium …
Secondly, it uncovers the specific causes of cell failure, particularly during battery long-term intermittent overcharging, which provide crucial information for optimizing …
The intermittent discharge current can enhance the O 2 diffusion and increase the discharge capacity due to sufficient O 2 supply. Battery stacks for transportation or stationary …
One such class of techniques exploiting the battery recovery effect phenomenon claims that performing an intermittent discharge instead of a continuous discharge will increase the usable...
Experimental results reveal that the batteries with intermittent discharge restore higher loaded voltages and thus can release more capacity. This effect is found to be more significant for an …
The battery cycling and ICI measurements were made using a PEC ACT0550 battery testing system and the cell was placed in a climate chamber at 20°C. The battery was …
It is demonstrated that, when compared to constant-current stripping, intermittent-current stripping effectively suppresses void formation and enhances the stripping capacity of …
Three different cases were operated: floating, low-current self-discharge under compensation and open circuit. The new low-current method is tested in several UPS systems at Electricite de …
The intermittent current interruption (ICI) method was pro-posed to monitor the battery status for photovoltaic systems [31] and then applied for lithium sulfur battery characterization [25]. In …
Three different cases were operated: floating, low-current self-discharge under compensation and open circuit. The new low-current method is tested in several UPS systems at Electricite de …
In this study, intermittent discharge strategies were proposed and investigated for Li-O 2 batteries with electrodes of different wettability at various current densities (0.1–2.0 …
In this study, intermittent discharge strategies were proposed and investigated for Li-O 2 batteries with electrodes of different wettability at various current densities (0.1–2.0 …
E 0 is the starting potential difference between the electrodes and E 4 is the ending potential after relaxation. r p is the radius of the particles and t p is the pulse duration. E(t) is the potential progression during the …
The intermittent discharge current can enhance the O 2 diffusion and increase the discharge capacity due to sufficient O 2 supply. Battery stacks for transportation or stationary …
Experimental results reveal that the batteries with intermittent discharge restore higher loaded voltages and thus can release more capacity. This effect is found to be more significant for an …