Researchers at the Indian Institute of Technology (IIT) Delhi have designed a device which can generate electricity from raindrops, water drops, water streams, and ocean waves. …
The device is called liquid-solid interface triboelectric nanogenerator. The device consists of specially designed nanocomposite polymers and contact electrodes to generate a few milliwatt power. Electricity is generated by from the device using the triboelectric effect and electrostatic induction and the electricity so generate can be stored in batteries for further use.