For years, scientists have been working on new ways to store energy. Scientists have been working on supercapacitors that replace modern lithium-ion batteries. The problem with supercapacitors these days is that they can’t store the energy needed for certain uses. Scientists from Japan have developed a new type of supercapacitor that uses conductive nanodiamonds as an electrode material.
The result is a high-performance energy storage device for applications that continue to charge and discharge quickly over a long period of time. The biggest benefit of a supercapacitor is that it can charge and discharge faster than conventional batteries. They can also last or last longer. This capability makes it ideal for use such as regenerative braking in electric vehicles, wearable electronics, etc.
One of the major problems with modern supercapacitors is low energy density. The Japanese team has used boron-doped nanodiamonds as electrodes. The material was chosen because the team knew that boron-doped diamonds kept high-energy storage devices stable over time.
The team used a method called microwave plasma-assisted chemical vapor deposition to create these electrodes and test their performance. In alkaline dual-electrode systems containing electrolytes of sulphuric acid solution, the electrodes produce much higher voltage than conventional batteries, resulting in higher energy and power density for supercapacitors.
The team then looked at whether the electrodes would show the same results if the electrolyte was changed to a saturated sodium perchlorate solution. This setting results in a significant increase in the voltage generated. It is not clear when or when this type of supercapacitor will go into production.