A Direct Liquid Fuel Cell with High Power Density Using Reduced Phosphotungstic Acid as Redox Fuel

Direct liquid fuel cells (DLFCs) are proposed to address the problems of high cost and complex storage transportation hydrogen in traditional hydrogen–oxygen proton exchange membrane cells. However, present fuels organic small molecules used DLFCs restricted sluggish electrochemical kinetics easily poisoning precious metal catalysts. Herein, we demonstrate reduced phosphotungstic acid as a for based on its advantages chemical stability, activity common carbon material electrodes, low permeability through membranes. The application effectively solves anode catalysts serious permeation loss DLFCs. A cell achieves peak power density 466 mW cm?2 at voltage 0.42 V good stability current densities range from 20 200 mA cm?2.