Publication

Bipolar Al/O2 battery with planar electrodes in alkaline and acidic electrolytes

Christos Comninellis
1995
Journal Articles

Abstract

A filter-press-type Al/O2 battery with bipolar assembly of the electrodes was developed. The current-voltage curves and power output of monopolar and of bipolar batteries contg. one to four cells were measured in alk. (4M NaOH and 7.5M KOH) and acidic (3M H2SO4 + 0.04M HCl) electrolytes. The unit cell had an open circuit voltage of 1.85 V in alk. media and 1.3 V in acidic media. The single bipolar unit delivered a max. power of about 7.5 W (75 mW cm-2) at 0.7 V. The stack (four cells) had a max. power of 30 W in 4M NaOH and 35 W in 3M H2SO4 + 0.04M HCl. The power output of the bipolar stack detd. exptl. for different external loads could be described using the model of an elec. equiv. circuit. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/51557924-169b-4ad9-ae91-199e24af5fd1

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Christos Comninellis
1995
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/51557924-169b-4ad9-ae91-199e24af5fd1

About this result

Related concepts (32)

Open-circuit voltage

Open-circuit voltage (abbreviated as OCV or VOC) is the difference of electrical potential between two terminals of an electronic device when disconnected from any circuit. There is no external load connected. No external electric current flows between the terminals. Alternatively, the open-circuit voltage may be thought of as the voltage that must be applied to a solar cell or a battery to stop the current. It is sometimes given the symbol Voc. In network analysis this voltage is also known as the Thévenin voltage.

Electrical load

An electrical load is an electrical component or portion of a circuit that consumes (active) electric power, such as electrical appliances and lights inside the home. The term may also refer to the power consumed by a circuit. This is opposed to a power source, such as a battery or generator, which produces power. The term is used more broadly in electronics for a device connected to a signal source, whether or not it consumes power.

Voltage regulator

A voltage regulator is a system designed to automatically maintain a constant voltage. A voltage regulator may use a simple feed-forward design or may include negative feedback. It may use an electromechanical mechanism, or electronic components. Depending on the design, it may be used to regulate one or more AC or DC voltages. Electronic voltage regulators are found in devices such as computer power supplies where they stabilize the DC voltages used by the processor and other elements.

Related publications (9)

Bipolar Al/O2 battery with planar electrodes in alkaline and acidic electrolytes

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