29 Jul '14, 4pm

Honeycomb-Inspired Design Offers Major Breakthrough for Electric Vehicle Batteries

Honeycomb-Inspired Design Offers Major Breakthrough for Electric Vehicle Batteries

Here’s the problem with current designs of EV lithium-ion batteries: the lithium is found in the battery’s electrolyte and expands during charging, making its surface uneven after repeated recharging. Lithium ions that are attracted to the battery’s anode can then escape through the gaps created by the uneven surface and “leak” out, creating a fibrous mass known as dendrite. Eventually the tiny dendrite fibers spread between the cathode and anode, which can cause the battery to short circuit and even catch on fire . Ideally, the battery design would also have a lithium anode, which would be much more efficient than the silicon or graphite currently used. Unfortunately, that would only compound the dendrite problem, as well as producing a lot of heat and causing the anode to poach lithium from the electrolyte.

Full article: http://inhabitat.com/honeycomb-inspired-design-offers-maj...

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