Fabrication of electrolyte membranes of Mg-Al layered double hydroxide for all-solid-state alkaline fuel cells

Abstract

Electrolyte membranes for all-solid-state alkaline fuel cells were fabricated using Mg-Al layered double hydroxide (LDH) powder with glass paper or Pt-catalyst-loaded carbon cloth as a supporter. Membranes with a thickness of about 100-150 μm were obtained. Fuel cells using those membranes as a electrolyte were confirmed to show OCV of more than 0.9 V. These cells showed higher power density compared with a fuel cell using the Mg-Al LDH pellet as the electrolyte.