Development of Membraneless Paper‐pencil Microfluidic Hydrazine Fuel Cell.

Herein, a membraneless paper based co‐laminar microfluidic Hydrazine‐Hydrogen peroxide fuel cell, employing graphite pencil electrode, is presented. Hydrogen peroxide has been used as oxidant while sulphuric acid and sodium hydroxide have been employed as electrolytes. The electrodes were formed by manual stroking of graphite pencils. Maximum power output was achieved by examining various combinations of different grades of graphite electrodes on a suitable filter paper with 100 pencil strokes. Here, maximum current density and power density of 14.43 μA/cm2 and 1.30 μW/cm2 respectively were achieved at a stable open circuit potential of 410 mV for 40 mM of hydrazine concentration. [ABSTRACT FROM AUTHOR]