High Performance Alkaline Air Diffusion Electrode (ADE) with Non-Precious Metal Catalyst

High performance alkaline air diffusion electrode (ADE) is manufactured with a proprietary non-precious and non-platinum group metal catalyst.  The substrate of the electrode is based on the nickel foam.  The catalyst/MPL is coated on one side of the nickel foam.  The back side is laminated with a porous PTFE film.

This alkaline air diffusion electrode has a thickness of ~0.82-0.85 mm.  The dimensions of the electrode is 12 x 12cm.

Some of the major advantages of this alkaline air diffusion electrode can be summarized as:

• High current density capability (up to 500 mA/cm2 depending on the type of the electrolyte and reactants used)
• Proven long lifetime (greater than 12,000 hours demonstrated in the lab)
• Low cost non-precious metal catalyst

The following performance curve is the testing of the alkaline air diffusion electrode with a zinc-air battery cell using 30 wt% alkaline electrolyte.

• Metal-air batteries with alkaline or neutral electrolyte
• Alkaline fuel cells with liquid electrolyte
• Alkaline fuel cells with solid membranes such as anion exchange membranes
• Lithium-air batteries
• Metal-hydride air batteries
• Air reduction-based chlor-alkali electrolysis (also known as cathode depolarized chlor-alkali electrolysis)
• Zinc-air batteries
• Magnesium-air batteries

An article by Sugano et al. entitled "Sodium-air fuel cell for high energy density and low-cost electric power " describes the use of High Performance Alkaline Air Diffusion Electrode (ADE) for sodium-air fuel cell application and demonstrating its high energy density (1200 Wh/kg or 1295 Wh/L) at 80 mA/cm2.  This article demonstrates the concept of a liquid sodium-humidified air fuel cell using a solid electrolyte and the discharge by-product spontaneously capturing atmospheric CO2.