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Simalube Gas Cell

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The gas cell
Gas cells in the size and shape of hearing-aid batteries work according to electrochemical principles. Without any external power supply they produce hydrogen gas on demand. The world wide patented gas cell with high energy density are ideally suitable for simple and inexpensive dispension of liquids or viscous substances. However, they are also used as a hydrogen source.
This is how it works
Short-circuiting the two outside poles activates the cell, which then starts to produce gas. The desired volume of gas per hour is determined by means of an electric load resistor (Ra). The greater the load resistance, the slower the rate of gas production. The gas is produced in direct proportion to the current flowing through the cell. The gas escapes through two holes in the bottom of the cell. If the circuit is interrupted, gas production is stopped immediately.



Capacity

The gas cells are available in 3 different sizes with different gas volumes. Special models for larger gas volumes are available upon request. The gas production capacity and maximum gas output per hour can be increased by adding any number of standard cells connected in series.

Electrical load resistance
Calculation
Theoretical hydrogen development at 1 Ah corresponds to 448 ml at 20 °C. The examples in the table provide guidelines for gas production of a single cell:

Gas cell applications
The gas produced is used to displace a piston or membrane. Typical applications are intravenuous administration of medical substances over prolonged periods of time or automatic lubricant dispensers in the industry.
Other applications
The hydrogen produced is extremely pure and can therefore be used for measuring tasks, sensor technology or analytical purposes in the laboratory. Oxygen gas cells can be supplied on request. However, this requires an additional power supply.
H 2 reference electrode (see left) for pH measurement, particularly suitable for use in extremely acidic and alkaline solutions. Modern measuring tongues with ion exchanger membranes expand the range of possible applications in science and technology, e.g. for charge state monitoring in lead accumulator batteries. The cartridge supplies hydrogen to the electrode for 6 months and more.
General information
Gas cells can be stored for 2 years without any noticeable loss of energy. The protective seal prevents the cell from drying out and is not removed. It lifts off on its own during operation. Disposal of cells is done via battery recycling.
Hydrogen is the lightest of all gases and is harmless when it occurs alone. Oxyhydrogen gas is only possible in the correct air/hydrogen ratio and the necessary ignition temperature is more than 500 °C. Normal city gas contains approx. 55 % vol.; lighting a gas stove releases far more hydrogen than one of our gas cells ever could.

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