Exhaust Gas Compositions and Fuel Efficiencies of Hydrazine‐Air Fuel Cells

Abstract

High fuel efficiency and clean exhaust gas are the two most important requirements in hydrazine‐air fuel cells. Four anodes of sintered nickel plaque were studied for these purposes, each one containing either cobalt, nickel, palladium, silver, or platinum as a catalyst. Exhaust gases were determined with a gas chromatograph, the consumption of hydrazine in the anolyte was analyzed chemically, and fuel efficiencies and unreacted product gases were evaluated based on these data. Consequently with the silver catalyzed electrode, 97% fuel efficiency was attained at 50 mA/cm2 at 25°C.

Metallophthalocyanine-based molecular materials as catalysts for electrochemical reactions

“…It has been used in the anode of fuel cells [464]. Hydrazine is known to interact with transition metal phthalocyanines [465] and this has been confirmed by several spectroscopic studies including IR [466] and EPR.…”

Alkaline Fuel Cells

“…Tamura and Kahara (1976) studied in detail the composition of the products evolved in hydrazine-air fuel cells working at a temperature of 25 • C when different catalysts were used for the hydrazine electrode. In an operating hydrazine-air fuel cell, the potential of the hydrazine electrode moves in the positive direction when an anodic current flows, and the rate of cathodic hydrogen evolution [reaction (6.9)] decreases accordingly.…”

Development Trends on Nickel‐Based Electrocatalysts for Direct Hydrazine Fuel Cells

“…In comparison to many liquid hydrocarbon fuel cells, greenhouse CO 2 gas and even CO are largely avoided during HzOR process due to absence of carbon atoms [17–19] . Different international corporations such as Hitachi, Matsushita, Siemens, and Canadian Department of Defense were exhaustively developed these technologies [20–23] . In addition, DHzFCs were designated for space and military program in the United States (U.S).…”