Table 2 The molar excess heat \({\gamma }_{{\text{col}}}{mQ}_{{\text{ann}}}\) and collision efficiency \({\gamma }_{{\text{col}}}\) newly observed.

From: Excess heat production of the pair annihilation of ionic vacancies in a copper redox reaction using a double bipolar MHD electrode

Electrode type

Copper redox reaction without a diffuser

\({\gamma }_{{\text{col}}}{mQ}_{{\text{ann}}}\) / kJ mol−1

Copper redox reaction

with a diffuser

\({\gamma }_{{\text{col}}}{mQ}_{{\text{ann}}}\) / kJ mol−1

Single MHDE (m = 1)

387 ± 165

(\({\gamma }_{{\text{col}}}\) = 0.679 ± 0.289)

Double bipolar MHDE (m = 2)

702 ± 426

710 ± 144

(\({\gamma }_{col}\) = 0.616 ± 0.374)

(\({\gamma }_{{\text{col}}}\) = 0.623 ± 0.126)