diff --git a/src/thermophysicalModels/reactionThermo/mixtures/SpecieMixture/SpecieMixture.C b/src/thermophysicalModels/reactionThermo/mixtures/SpecieMixture/SpecieMixture.C
index 853fe889a..951fe48bf 100644
--- a/src/thermophysicalModels/reactionThermo/mixtures/SpecieMixture/SpecieMixture.C
+++ b/src/thermophysicalModels/reactionThermo/mixtures/SpecieMixture/SpecieMixture.C
@@ -69,12 +69,12 @@ Foam::scalar Foam::SpecieMixture<MixtureType>::W
 
 
 template<class MixtureType>
-Foam::scalar Foam::SpecieMixture<MixtureType>::z
+Foam::scalar Foam::SpecieMixture<MixtureType>::Qc
 (
     const label speciei
 ) const
 {
-    return this->getLocalThermo(speciei).z();
+    return this->getLocalThermo(speciei).Qc();
 }
 
 
diff --git a/src/thermophysicalModels/reactionThermo/mixtures/SpecieMixture/SpecieMixture.H b/src/thermophysicalModels/reactionThermo/mixtures/SpecieMixture/SpecieMixture.H
index 1fc03f531..b4d6c31c8 100644
--- a/src/thermophysicalModels/reactionThermo/mixtures/SpecieMixture/SpecieMixture.H
+++ b/src/thermophysicalModels/reactionThermo/mixtures/SpecieMixture/SpecieMixture.H
@@ -81,8 +81,8 @@ public:
             //- Molecular weight of the given specie [kg/kmol]
             virtual scalar W(const label speciei) const;
 
-            //- Number of elementary charges of the given specie []
-            virtual scalar z(const label specieI) const;
+            //- Specific charge of the given specie []
+            virtual scalar Qc(const label specieI) const;
 
 
         // Per specie thermo properties
diff --git a/src/thermophysicalModels/reactionThermo/mixtures/basicSpecieMixture/basicSpecieMixture.C b/src/thermophysicalModels/reactionThermo/mixtures/basicSpecieMixture/basicSpecieMixture.C
index a3643c0d3..82e111b97 100644
--- a/src/thermophysicalModels/reactionThermo/mixtures/basicSpecieMixture/basicSpecieMixture.C
+++ b/src/thermophysicalModels/reactionThermo/mixtures/basicSpecieMixture/basicSpecieMixture.C
@@ -81,4 +81,34 @@ Foam::tmp<Foam::volScalarField> Foam::basicSpecieMixture::W() const
 }
 
 
+Foam::tmp<Foam::volScalarField> Foam::basicSpecieMixture::Qc() const
+{
+    const PtrList<volScalarField>& Y(basicMultiComponentMixture::Y());
+
+    tmp<volScalarField> tQc
+    (
+        new volScalarField
+        (
+            IOobject
+            (
+                IOobject::groupName("Qc", Y[0].group()),
+                Y[0].time().timeName(),
+                Y[0].mesh()
+            ),
+            Y[0].mesh(),
+            dimensionedScalar("zero", dimless, 0)
+        )
+    );
+
+    volScalarField& Qc = tQc.ref();
+
+    forAll(Y, i)
+    {
+        Qc += Y[i]*this->Qc(i);
+    }
+
+    return tQc;
+}
+
+
 // ************************************************************************* //
diff --git a/src/thermophysicalModels/reactionThermo/mixtures/basicSpecieMixture/basicSpecieMixture.H b/src/thermophysicalModels/reactionThermo/mixtures/basicSpecieMixture/basicSpecieMixture.H
index e814154a9..459baecec 100644
--- a/src/thermophysicalModels/reactionThermo/mixtures/basicSpecieMixture/basicSpecieMixture.H
+++ b/src/thermophysicalModels/reactionThermo/mixtures/basicSpecieMixture/basicSpecieMixture.H
@@ -88,9 +88,15 @@ public:
             //- Molecular weight of the given specie [kg/kmol]
             virtual scalar W(const label speciei) const = 0;
 
+            //- Specific charge of the given specie [C/kg]
+            virtual scalar Qc(const label speciei) const = 0;
+
             //- Molecular weight of the mixture [kg/kmol]
             tmp<volScalarField> W() const;
 
+            //- Charge number of the mixture [C/kg]
+            tmp<volScalarField> Qc() const;
+
 
         // Per specie thermo properties
 
diff --git a/src/thermophysicalModels/specie/specie/specie.H b/src/thermophysicalModels/specie/specie/specie.H
index e48be854f..a8b1803b6 100644
--- a/src/thermophysicalModels/specie/specie/specie.H
+++ b/src/thermophysicalModels/specie/specie/specie.H
@@ -174,6 +174,21 @@ public:
             inline scalar z() const;
 
 
+        // Electric charge function
+
+
+            // Mole specific properties
+
+                //- Electric charge [C/kmol]
+                inline scalar qc() const;
+
+
+            // Mass specific properties
+
+                //- Electric charge [C/kg]
+                inline scalar Qc() const;
+
+
         // I-O
 
             //- Write to Ostream
diff --git a/src/thermophysicalModels/specie/specie/specieI.H b/src/thermophysicalModels/specie/specie/specieI.H
index a0d498b5e..becb6e87a 100644
--- a/src/thermophysicalModels/specie/specie/specieI.H
+++ b/src/thermophysicalModels/specie/specie/specieI.H
@@ -138,6 +138,18 @@ inline scalar specie::z() const
 }
 
 
+inline scalar specie::qc() const
+{
+    return nCharges_ * NA * e;
+}
+
+
+inline scalar specie::Qc() const
+{
+    return nCharges_ * NA * e / molWeight_;
+}
+
+
 // * * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * //
 
 inline void specie::operator=(const specie& st)
diff --git a/src/thermophysicalModels/specie/thermo/thermo/thermo.H b/src/thermophysicalModels/specie/thermo/thermo/thermo.H
index c0c42c479..26251ca56 100644
--- a/src/thermophysicalModels/specie/thermo/thermo/thermo.H
+++ b/src/thermophysicalModels/specie/thermo/thermo/thermo.H
@@ -336,21 +336,6 @@ public:
             ) const;
 
 
-        // Electric charge function
-
-
-            // Mole specific properties
-
-                //- Electric charge [C/kmol]
-                inline scalar qc() const;
-
-
-            // Mass specific properties
-
-                //- Electric charge [C/kg]
-                inline scalar QC() const;
-
-
 
         // I-O
 
diff --git a/src/thermophysicalModels/specie/thermo/thermo/thermoI.H b/src/thermophysicalModels/specie/thermo/thermo/thermoI.H
index 4252c50d2..44197fd18 100644
--- a/src/thermophysicalModels/specie/thermo/thermo/thermoI.H
+++ b/src/thermophysicalModels/specie/thermo/thermo/thermoI.H
@@ -530,20 +530,4 @@ inline Foam::species::thermo<Thermo, Type> Foam::species::operator==
 }
 
 
-template<class Thermo, template<class> class Type>
-inline Foam::scalar
-Foam::species::thermo<Thermo, Type>::qc() const
-{
-    return this->z() * this->NA * this->e;
-}
-
-
-template<class Thermo, template<class> class Type>
-inline Foam::scalar
-Foam::species::thermo<Thermo, Type>::QC() const
-{
-    return this->z() * this->NA * this->e / this->W();
-}
-
-
 // ************************************************************************* //