A battery that can turn your body heat into electricity could lead to mobile phones capable of charging while in your pocket. Researchers at the Massachusetts Institute of Technology have developed a button-sized self-loading battery that can clean energy from low-temperature heat sources.The device can be charged at temperatures between 20 ° C (68 ° F) and 60 ° C (140 ° F), much lower than other heat collection technologies.
Dr. Gang Chen, head of MIT's mechanical engineering department, who led the work, said the technology could lead to new mobile phone batteries that can be charged without having to be connected. He said: "It is a self-powered device and can be attractive to places without a power grid.
"To generate enough energy for practical applications (such as mobile phones), we need better designs of materials and systems, and we are working on it.