Mobile devices have now reached the same power of the PC a few years ago, but despite the progress in the production of processors, autonomy is still the Achilles heel. Solid Energy startup born within MIT, has proposed a new solution that could be used in future smartphones and smartwatch. The “trick” is to use batteries with anode metal and solid electrolyte.
Solid Energy has built a prototype in which the anode graphite was replaced with a lithium metal anode. In the past, several manufacturers have tried to follow the same path but with little success. The litho metal tends to react with the electrolyte present in the battery cells forming compounds that trap the lithium ions. This entails a reduction of the electrical present generated and then the amount of energy that can be stored. The reaction also causes the appearance of dendrites that cause small circuits and the battery to explode.
To solve these evils you could use a solid electrolyte but it too would reduce battery performance. Solid Energy then used an electrolyte with solid particles and liquid, non-flammable contains additives that prevent the formation of dendrites. The prototype has dimensions smaller than those of existing batteries have and can store twice the energy.
Also can be recharged 300 times retaining 80% of its original capacity. Often the amazing ads do not follow a mass production. This time however, it seems that the time-to-market can be short. The battery Solid Energy in fact can be made in the same plant from which comes today the lithium-ion battery.