Comparing Cell Energy Density of Two Chemistries

This case study will highlight the importance of reporting new electrode active material performance parameters in full cell architectures. It will also discuss the need to understand the limits of different cell chemistries, and why any extrapolation of future performance must take into account the physical realities of the materials. The performance of electrode active … Read more

Battery Pack Density Fundamental Limit

fundamental pack to cell density ratio

There is a battery pack density fundamental limit and that is the cell density. Obviously, but how close can we get to that limit? The following plot shows the pack gravimetric energy density plotted versus the cell gravimetric density. Added to this dataset is the fundamental limit. If we calculate the ratio of this we … Read more

Nissan Leaf

2015 Nissan Leaf Battery

The Nissan Leaf is perhaps the iconic original OEM BEV. Therefore, interesting to see how it performs against the competition over the years. The pack gravimetric density versus year of introduction is an interesting plot. Arguably the energy density should be outstanding as these packs are passively cooled. However, they are also conservative with respect … Read more