New solar cell efficiently stores energy in liquid form

Researchers from the University of Wisconsin-Madison (USA) have developed a new dual energy system that generates energy and stores it for further needs. To do this, they combined two already known technologies - solar panels and liquid batteries - into a single complex. Also, each of the components was implemented on new materials with improved properties.

For the new solar battery, wafers were made from familiar silicon with additions of an extremely promising perovskite material. They absorb waves of different wavelengths, which allows them to capture much more useful radiation. In a liquid battery, instead of the time-tested, but too aggressive acidic electrolytes, organic compounds were used in a saline solution. The formulas are classified, but the new electrolyte is already being cautiously called the ideal composition for this type of battery.

The resulting system is highly stable - it has a constant efficiency of 20% in all modes. You can expose the device to the sun and directly take energy from it, or you can store it in the liquid electrolyte of the battery in order to get the same 20% at the end of the day. This is very convenient for creating autonomous systems in remote regions, where the Sun is the only source of energy.