differential capacitance

https://doi.org/10.1351/goldbook.D01702
Differential capacitance (per unit area of @I03118@ or electrode; SI unit \(\mathrm{F}\ \mathrm{m}^{- 2}\)) is given by \[C=(\frac{\partial Q}{\partial E})_{T,p,\mu _{i},...}\] where \(E\) is the potential of the electrode with respect to a @R05229@, \(\mu _{i}\) is a set of @C01032@ which are held constant, \(T\) is the @T06321@, \(Q\) is the @E01923@ (per unit area of @I03118@ or electrode), and \(p\) is the pressure.
Sources:
PAC, 1974, 37, 499. (Electrochemical nomenclature) on page 509 [Terms] [Paper]
PAC, 1983, 55, 1251. (Interphases in systems of conducting phases (Provisional)) on page 1261 [Terms] [Paper]