An experimental battery sample, which can be fully charged and discharged in just a few seconds, consists of only salted water and non-toxic polymers. An additional feature is to change the color of the components depending on the level of charge, which serves as a visual indicator.
Currently, lithium-ion batteries are the most common. Although they have relatively high capacity indicators, but slowly accumulate and give energy, and also contain harmful and flammable materials, which complicates their disposal. However, recently a team of researchers from the Imperial College of London created a prototype of a new battery type, using only thin films of special plastic and water-based electrolytes.
The breakthrough contributed to the development of polymeric materials, which are able to release and absorb salty water ions, quickly and reversible, not destroying. When charging, the ions are attracted to the oppositely charged electrodes and initially scientists have encountered the problem of reversibility of this process.
To solve it, the team has developed side chains attached to conductive polymer «highways». Using polar materials, they created electrodes with high affinity for water. Due to this, they made positive and negative electrodes that can interact with opposite water ions. Since the polymer frames were already flexible, expanding and compressing during the work, then no additional impurities needed.
The presented prototype can be very quickly charged and discharged, non-toxic and not exposed to fire, but has less energy-intensity indicators than lithium-ion batteries. A feature of the new version is also a change in the color of the components in the process of operation, which allows you to visually determine the current level of charge.
Although the technology cannot exhibit more efficient types of batteries, but its unique properties can be used in various fields. Such devices can be an additional option for environmental drives for
Further, the researchers will deal with checking the maximum potential of charge accumulation.
Recall that earlier Honda declared the development of a new battery that stores