... to the previously reported values. In a supercapattery device, an excellent energy density of 53.3 Wh/Kg and a high power density of 7995 W/kg are obtained. The stability of the device is measured up to 1000 cycles and achieved the specific capacity retention of 86% with columbic efficiency of 97%. Electrochemical...

... with the changes in voltage with respect to temperature in the VI plots shown in Fig. 1 (±0.007 V/1 °C). This result demonstrates the stability of the Pt-free, low-temperature configuration of the DFFC. Fig. 3 VI and PD plots for the DFFC demonstrating ( a ) current and ( b ) power densities at various...

... a certain period of time. Optimization PEM fuel cells Power density Control Polymer electrolyte membrane (PEM) fuel cells have seen increased usage in various applications due to major improvements in catalyst loading and membrane technology. The need for energy efficient, clean and quiet...

... and, hence, the power density curves are measured by varying the load's resistance. The power density of the microbial fuel cell with the Nafion/polyaniline composite membranes improves significantly as the amount of polyaniline increases because the interaction between sulfonic groups in the Nafion matrix...

... performance. The first case to be considered is under different thermal operation conditions, including thermostatic, adiabatic, and heat exchange operation. The corresponding results show that a better uniformity and the largest stack output power density can be obtained under heat exchange operation...