Researchers at Stanford University believe they may have found a solution to the problematic lithium-ion batteries by implementing a built-in flame retardant that doesn't harm battery's performance. Lithium-ion batteries, while great for holding a charge in higher capacity into small devices, it is, however, one of the biggest problems in the tech world as the ubiquitous power source has a tendency to burst into flames.
One may recall the worldwide incidents involving Samsung Galaxy Note 7 which resulted in the models being pulled back from the market last year. As of October 13, Samsung is officially recalling every single Note 7, including replacement units. The Galaxy Note 7 has caught fire as many as 112 times after only one month on sale. Li-ion battery contains two primary electrodes - anode and cathode, and if the two electrodes touch each other, a thermal runaway could kick in resulting an explosion.
To cope out with the problems, Engadget explains that the scientist at Stanford suggesting a separation between the two electrodes with a flame retardant, consists of fibrous threads of triphenyl phosphate (TPP), a common flame retardant, with a shell of another polymer (PVDF-HFP). This will prevent the TPP from seeping into the electrolyte - that will reduce the battery's performance.
The polymer will melt when the separator hits 160 degree Celsius, abruptly releasing the TPP into the electrolyte and extinguishing the combustion. This has only been tested in a coin cell and more experiments are required to know if the flame retardant would work in larger batteries such as a smartphone or an electric car.
This kind of innovation could save companies big money but it also may remove an impediment to innovation, according to Gizmodo. Battery fires and related product recalls have effected Apple, Tesla, hoverboards, electric skateboards and most famously Samsung.With proper safety precautions, it's possible that thinner batteries will be more feasible in the future.
