Explore the future of energy storage and battery density. Compare lithium-ion cells to natural chemical storage like wood and oils in this insightful episode.

From a pure energy density perspective, the fat in your body is forty times more efficient at storing energy than the lithium battery in your phone.
An audio lesson exploring future alternatives to lithium batteries, specifically focused on grid-scale storage solutions as discussed in 'Why Lithium Batteries SUCK'.

The energy density of a standard lithium-ion battery is surprisingly low when compared to common natural substances. While a lithium-ion battery yields less than one megajoule of energy per kilogram, simple firewood provides about sixteen megajoules per kilogram. This means that basic chemical storage found in nature, such as wood, can pack sixteen times more energy for the same weight than our most advanced mobile power technology.
Many mundane household objects are actually more efficient at storing energy than modern batteries. For instance, a stick of butter contains thirty megajoules per kilogram, and a bottle of olive oil reaches thirty-seven megajoules per kilogram. These fats and oils represent a massive gap in energy density compared to lithium-ion cells, which struggle to reach even a single megajoule per kilogram in their current form.
Despite living in an era defined by mobile devices like smartphones and laptops, we remain tethered to lithium-ion technology that is fundamentally limited in its energy capacity. When measured in megajoules per kilogram, our current batteries are significantly less efficient than the simple chemical storage found in firewood or pantry staples. This disparity highlights the urgent need to look beyond lithium to find the true future of energy storage.
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