Publication

Development of a 100 W rechargeable bipolar zinc/oxygen battery

Christos Comninellis
1998
Journal Articles

Abstract

A bipolar filter press-type elec. rechargeable Zn/O2 battery has been developed. Reticulated copper foam served as substrate for the zinc deposit on the anodic side, and La0.6Ca0.4CoO3-catalyzed bifunctional oxygen electrodes were used on the cathodic side of the cells. The 100 cm2 unit cell had an open-circuit voltage of 1.4 V (O2) in moderately alk. electrolyte. The open-circuit voltage and the peak power measured for a stack contg. seven cells were .apprx.10 V and .apprx.90 W, resp. The current-potential behavior was detd. as a function of the no. of bipolar cells, and the max. discharge capacity was detd. at different discharge rates. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/9e11377b-6e29-4954-bac8-2595072393c1

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Christos Comninellis
1998
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/9e11377b-6e29-4954-bac8-2595072393c1

About this result

Related concepts (32)

Flow battery

A flow battery, or redox flow battery (after reduction–oxidation), is a type of electrochemical cell where chemical energy is provided by two chemical components dissolved in liquids that are pumped through the system on separate sides of a membrane. Ion transfer inside the cell (accompanied by flow of electric current through an external circuit) occurs through the membrane while both liquids circulate in their own respective space. Cell voltage is chemically determined by the Nernst equation and ranges, in practical applications, from 1.

Electric battery

A battery is a source of electric power consisting of one or more electrochemical cells with external connections for powering electrical devices. When a battery is supplying power, its positive terminal is the cathode and its negative terminal is the anode. The terminal marked negative is the source of electrons that will flow through an external electric circuit to the positive terminal. When a battery is connected to an external electric load, a redox reaction converts high-energy reactants to lower-energy products, and the free-energy difference is delivered to the external circuit as electrical energy.

Anode

An anode is an electrode of a polarized electrical device through which conventional current enters the device. This contrasts with a cathode, an electrode of the device through which conventional current leaves the device. A common mnemonic is ACID, for "anode current into device". The direction of conventional current (the flow of positive charges) in a circuit is opposite to the direction of electron flow, so (negatively charged) electrons flow out the anode of a galvanic cell, into an outside or external circuit connected to the cell.

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Development of a 100 W rechargeable bipolar zinc/oxygen battery

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