The results of new studies have shown that the chemical structure of organic radical polymers allows you to create effective batteries that do not contain metal.
The main obstacle on the way of making energy-free energy drives is to find a necessary material that has sufficient electrochemical activity, that is, it must be able to store and exchange electrons. Chemists from Texas University A & M believe that organic radical polymers, which are very stable and reactive, can become a solution that are very stable and reactive.
This class of materials has one unpaired electron on a radical group, providing a quick charge of charge in the process of redox reactions. Although it was also known about it earlier, but until recently there was no accurate description of the mechanism, by means of which electrons and ions pass through the polymer. The analyzes studied samples revealed several unexpected results.
It was previously believed that when charging the discharge of the polymer is transported only by anions, but the study showed that in this process ions can take part in this. In addition, it was found that the behavior and movement of ions are greater dependent on the electrolyte than from the polymer itself. A deeper understanding of the processes underlying, allows scientists to study their interaction in more detail.
The collection of reliable data on the mechanisms of redox reactions was partially difficult to scale and the speed of their flow. Therefore, to carry out incredibly accurate measurements, scientists used the method of electrochemical quartz microgravimetry (EQCM-D). In fact, they determined the mass of incoming and outgoing ions.
According to the researchers, the main attractiveness of this class of polymers is the reaction rate. Batteries based on them will be able to charge and discharge faster than drives used now. In the future, this can have a huge effect on electric vehicles and electrical engineering.
Japanese scientists are also searching for lithium alternatives. After studying 4,300 compounds with sodium having a crystal structure, they found