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overpotential

American  
[oh-ver-puh-ten-shuhl] / ˈoʊ vər pəˌtɛn ʃəl /

noun

Electricity.

  1. overvoltage.

Etymology

Origin of overpotential

First recorded in 1915–20; over- + potential

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In forward bias, it exhibited a current density of 11 mA/cm2 at 181 mV overpotential.

From Science Daily • Nov. 15, 2023

Upon carrying out electrocatalytic water splitting, the team observed that Ni-W5N4 alloy catalyzed the hydrogen evolution reaction, resulting in 10 mA/cm2 current density at a small overpotential of 11 mV.

From Science Daily • Nov. 15, 2023

It showed a remarkable current density of 100 mA/cm2 at an overpotential of just 230 mV.

From Science Daily • Nov. 15, 2023

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.