How do you calculate battery to NP ratio?
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How do you calculate battery to NP ratio?
It is worth noting that the often theoretical capacity of Li and the practical capacity of the cathode are used for calculating N/P ratio….Calculating the N/P Ratio for the Lithium Metal Battery.
| TLi | ≡ | Li thickness [μm] |
|---|---|---|
| F | ≡ | Faraday’s constant = 26801.4814 [mAh mol-1] |
| ρ | ≡ | density of Li = 0.534 [g cm-3] |
How do you count coulombs?
Coulomb counting is a technique used to track the State of Charge of a battery pack. It works by integrating the active flowing current (measured in amps) over time to derive the total sum of energy entering or leaving the battery pack. This produces a capacity that is typically measured in Amp-hours.
How do you find the specific capacity of lithium?
The calculation of specific area capacity ratio of Li metal anode/cathode: (3680 mAh g-1*0.534 g cm-3*0.05 cm)/(1000 mAh g-1*0.5 mg cm-2*0.85) = 230 Capacity of Li metal = 3680 mAh g-1, Density of Li metal = 0.534 g cm-3, Thickness of Li metal = 0.05 cm, Capacity of cathode = 1000 mAh g-1, Mass loading of cathode = 0.5 …
What is the specific capacity of lithium *?
LCO is a very attractive cathode material because of its relatively high theoretical specific capacity of 274 mAh g−1, high theoretical volumetric capacity of 1363 mAh cm−3, low self-discharge, high discharge voltage, and good cycling performance [47], [48].
What is NP ratio?
Net Profit Ratio (NP Ratio): It is a commonly used profitability ratio which establishes relationship between the net profits after tax with net sales. Just like the GP ratio, NP ratio is also an indicator of operational soundness of the business. Net Profit Ratio = Net Profit after Tax/ Net Sales.
HOW is areal capacity calculated?
How do you calculate theoretical capacity?
Divide the molar electrical capacity: 26,800 mAh/mol by the molecular weight of the material of interest, and multiply by number of exchanged electrons. And you will get the Theoretical specific capacity of that material. This is a simple way to compute theoretical specific capacity.
What is specific capacity of a battery?
“Battery capacity” is a measure (typically in Amp-hr) of the charge stored by the battery, and is determined by the mass of active material contained in the battery. The battery capacity represents the maximum amount of energy that can be extracted from the battery under certain specified conditions.