A CNT anode film (16 mm diameter) was filtered out from a toluene dispersion of 0.75 mg of the CNTs on the PTFE membrane (diameter 25 mm, pore size 0.22 µm). A typical sheet electrical resistance in 1 cm parallel gap in the middle of the MOF@CNT (pure CNT) sheet was 150-250 (80-120 Ohm). Another CNT sheet on the membrane was cut in half, and used as wire contacts.