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Gold/Mining/Energy : Gold and Silver Juniors, Mid-tiers and Producers

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To: koan who wrote (12423)5/31/2006 10:32:01 PM
From: E. Charters  Read Replies (1) of 78416
 
I have heard about it.

Air-zinc is there in the Pauling electronegativity table. In theory the battery works producing about 1.65 volts per cell. Don't know about amperage.. energy density, they say it's high.

Zinc-air batteries have very high energy density (110 to 200 W·h/kg or 400 to 720 kJ/kg)

en.wikipedia.org

Properties/drawbacks

# Zinc-air batteries put out continuous energy as they dissipate their energy, and the voltage does not drop until the battery is over 80-85% depleted.

# Zinc-air batteries have very long shelf lives, as long as they are sealed (no oxygen is let in)

# Zinc-air batteries have a very high self-discharge rate when exposed to air, as the zinc will spontaneously react with oxygen, and the water catalyst in the battery will tend to dry out.

* To prevent self-discharging the battery has to be resealed when not in use. Moisture in the battery can be maintained with use of a humidified environment.

* Zinc-air batteries must not be over saturated with water, though. Avoid immersing in water!

# Zinc-air batteries use cheap materials and can be produced in mass quantities inexpensively.

# Zinc-air batteries are not electrically rechargeable, but the zinc can be recycled or “mechanically recharged” in which the zinc oxide from the used batteries can be smelted back into zinc metal (and thus reduced) and remixed with recycled electrolyte.

Know nothing about the company. Which make fuel cells, so it is a bit different than the above would suggest. Go here for that overview.

fctec.com
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