What is the energy density of stacked cells?

For instance, at the current density of 1.0 mA cm −2 during the charging and discharging of the cells, the measured areal power and energy density of the stacked device were 1516 and 30.74 μWh cm −2, respectively, while those of the single cell were 772.3 and 16.24 μWh cm −2.

Why are stacked cells more powerful than single cells?

In addition, the volumetric power (15.79 mW cm −3) and energy (320.2 μWh cm −3) density of the stacked cell were higher than those of the single cell (11.53 mW cm −3 and 242.4 μWh cm −3, respectively), for the same reason as that forwarded for the gravimetric analysis.

How many stacked cells are in a simulated battery?

Still, it is not usually shown in Ragone plots, as this is not a range of interest for battery operation. The simulated battery consists of ten stacked cells. Further, increasing the number of cells above ten has diminishing returns toward increasing the specific energy (see Supplementary Fig. S 10).

Can a monolithic stack of thin-film cells enable SSBs with high energy and power?

This work presents how a monolithic stack of thin-film cells can enable SSBs with both high energy and power. We demonstrate a prototype of a monolithically (bipolar) stacked thin-film battery with two cells electrically connected in series.

What is the difference between a single cell and a stacked cell?

The power and energy density of the stacked cell almost doubled, compared to that of the single cell at various current densities.

What is the capacitance of a stacked cell?

As shown in the figure, the measured areal capacitance of the stacked cell was ∼14.0 mF cm −2 at −10 °C, and it increased with temperature, reaching 27.64 mF cm −2 at 40 °C, owing to increased conductivity of the composite electrolyte. Fig. 6.