Recent studies have used water droplets to generate electricity with a substantial power output of 50.1 Wm−2. However, the generation mechanism resulting in this high output is unclear, because only the solid–water interface is considered and water is considered to act only as a charge carrying medium. This paper reports on the generation of electricity via the charge separation of water. The charge separation owing to water movement and impact leads to an extensive accumulation of electrical charge in water. A high electric power output is generated when mobile water carrying the accumulated charge comes in contact with a metal surface. These findings serve as a basis for establishing a correlation between charge separation and electricity generation based on water.
Bibliographical noteFunding Information:
We would like to thank Editage ( www.editage.co.kr ) for English language editing. This work was supported by a National Research Foundation of Korea (NRF) grant, funded by the Korea government ( MSIT ) (No. 2020R1A2C1010829 ), and Nano·Material Technology Development Program through the National Research Foundation of Korea ( NRF-2016M3A7B4910532 ).
© 2020 Elsevier Ltd
All Science Journal Classification (ASJC) codes
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
- Electrical and Electronic Engineering