Table 1 Summarized key parameters and design principles for EOOR systems

From: Parameterization and quantification of two key operando physio-chemical descriptors for water-assisted electro-catalytic organic oxidation

Substances

Products

Oxidation Potential

Relative Change of θOH* a

Reaction Complexity

Altered ΔGEq.2

M3+δ−OH* Requirement

Aldehyde

Carboxylic acid

Low

25–55%

Simple

−5 to 5 meV

Relatively low level of θOH*

Alcohol

Aldehyde

Highest b

13–20%

Simple

0–12 meV b

Relatively low level of θOH*

Carboxylic acid

Moderate

25–35%

Moderate

5–10 meV

Balanced θOH*/θsub*

Amine

Nitrile

High

20–32%

Complex

20–35 meV

High level of θOH*

  1. aCoverage relative to the θOH* under OER conditions.
  2. bIn weak alkaline solution (1 M K2CO3).