In a big step towards a 100% renewable future, a team of researchers from Germany, Italy and the United Kingdom has managed to create a 100 percent carbon-free battery that uses only water.
The team claims to have produced a 100-percent carbon-neutral battery that can be installed on the roofs of buildings to reduce energy consumption.
The battery is made of a mix of carbon nanotubes, an alloy that absorbs and releases heat.
It’s not completely carbon-based, however, and will need to be recycled, which is another major challenge.
The researchers have now demonstrated the battery using a water tank, but they plan to expand their research by combining the technology with water tanks to achieve a 100%.
“We have demonstrated that the high-density water tank can be used to store and release carbon dioxide as a result of the water discharge,” said Ulrich Schönenk, a research fellow at the Technical University of Dresden and the lead author of the study.
“The system can store the CO2 as the water is released into the system and then released again.
This is a promising new step toward a 100 per cent renewable future.”
While there’s no evidence that water can be completely carbon neutral, Schöenk said that the carbon neutral battery would make it possible to achieve 100 percent energy efficiency.
“With the existing battery technology, the water-releasing system is not completely free of energy leakage,” Schöne said.
“We found that the water tank is able to release enough energy to provide the full energy required to maintain the battery’s operation for long periods of time.”
The researchers tested their water-based carbon-capture battery by attaching a water-tank to a house.
When the water in the tank evaporated, it emitted CO2 into the atmosphere.
When it was turned off, the carbon dioxide emitted back into the air.
The researchers then created a network of two carbon nanorods that were attached to the water, and when the water was turned on, the nanorod would absorb and release the CO 2 .
The water would then return to its normal state.
“The water tanks that are now used in buildings can provide a significant amount of energy without requiring any additional technology,” Schoenenk told Engadgett.
“But in the future, water-storage technologies need to take account of the energy of the environment and the potential for carbon emissions.
This study provides an example of the possibilities that can now be realized.”
The team is currently testing the technology on a prototype that is being manufactured in Germany.
The system could also be used on rooftops and other structures to store energy from rooftop solar panels, Schoenens said.
“We are working to develop a system that can store energy generated by solar energy,” he said.