The development of energy-conversion devices using water movement has actively progressed. Ionovoltaic devices, which are driven by ion dynamics, show ion specificity by which different ions with identical charges show different output performance. However, the ion specificity remains poorly understood because the influence of the ion species on generated electric signals is not elucidated. The ion specificity in electric signals induced by flowing water droplet was investigated in terms of its relationship with the potential profile across the solid–liquid interface.
Bibliographical noteFunding Information:
This research was supported by the Basic Science Research Program (2017R1A2B3005482, Y.S.K. and 2017R1A2B2003552, E.S.), and the Center for Advanced Soft Electronics of the Global Frontier Project (2013M3A6A5073177) of the National Research Foundation (NRF) of Korea funded by the Korean government.
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