A new type of cement battery could be directly integrated into the structure of buildings and roads, which would then turn into giant accumulators.
Connected buildings are becoming more and more intelligent, integrating networks of increasingly numerous connected objects and even paintings orable to . Researchers at Chalmers University of Technology in Sweden wanted to go even further, by transforming in batteries.
In an article published in the journal, they detail the prototype of a new battery based on . They incorporated in the cement to increase the of , then placed a wire mesh in the mixture, covered with a layer of for’ or from for the .
A large storage capacity reduced to the scale of the buildings
Previous studies had already explored this, but the performance was too low. This new prototype increases energy density tenfold, reaching 7 watt hours per square meter or 0.8 watt hours per liter, in addition to being rechargeable. The capacity remains very low compared to a standard battery, but becomes very interesting at the scale of a building.
The researchers imagine that this functional cement could be used in buildings as well as roads and other structures to fuel, surveillance systems, 4G connections, provide cathodic protection against , and of course be connected to to provide a massive storage system for . However, they will have to resolve some technical obstacles before considering marketing. These batteries will have to last between 50 and 100 years, the life of a building in , or can be easily changed.