overpotential

American  

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

noun

Electricity.

1. overvoltage.

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Etymology

Origin of overpotential

First recorded in 1915–20; over- + potential

Example Sentences

The study, published in Biochar X, reports that the catalyst reaches a low overpotential of 250 mV at 10 mA cm² and remains highly stable for more than 50 hours when operating at elevated current density.

From Science Daily

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

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

From Science Daily

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

From Science Daily

A challenge for catalysis researchers is to combine the best of the biological and industrial approaches to nitrogen fixation — that is, to find a process that operates near ambient temperature and pressure, has minimal chemical overpotential, and does not require a capital-intensive plant to make ammonia on a large scale.

From Nature