A new mobile phone battery promises several days without recharging, or at least that is what they say at MIT where several investigations are being carried out to improve the performance of current lithium batteries, changing some of the liquid components of the battery for solid components.
Known as solid-state batteries, these experimental devices could greatly extend the life of electric vehicles and mobile devices by significantly increasing the energy density stored inside them.
New mobile phone battery: One charge every three days
MIT researchers have recently reported on a new type of solid-state battery architecture that overcomes some limitations of current designs.
This new architecture involves a combination of solid materials known as mixed ion-electronic conductors (MIEC) and lithium-ion-electronics isolators (ELI). These were built into a three-dimensional honeycomb architecture, with a series of nanoscale tubes made of MIECs forming the crucial piece of the new battery puzzle.
These tubes are infused with solid lithium metal to form the battery anode. And because there is extra space inside each of these tubes, the lithium metal has room to expand and shrink during charging and discharging. In this way, the material runs a fine line between a solid and liquid material, moving much like a liquid but maintaining a solid crystal structure throughout the process.
The MIT team has carried out several experiments testing the architecture of the solid state battery, managing to withstand 100 charge and discharge cycles without any sign of fracture. Later, the technology could generate anodes that weigh about a quarter of current designs, but with the same storage capacity, which would completely replace the current battery design.
If these ideas are fully realised, the MIT team says there could be mobile phones that only need to be charged once every three days.
Without a doubt, this is excellent news for all mobile phone addicts.