NickelMaghrebV1, PascalFrancis, Checkpoint, bibRecord, 000202

A comparative study, of 1 M and 8 M KOH electrolyte concentrations, used in Ni-MH batteries

Identifieur interne : 000202 ( PascalFrancis/Checkpoint ); précédent : 000201; suivant : 000203

A comparative study, of 1 M and 8 M KOH electrolyte concentrations, used in Ni-MH batteries

Auteurs : C. Khaldi [Tunisie] ; H. Mathlouthi [Tunisie] ; Jilani Lamloumi [Tunisie]

Source :

Journal of alloys and compounds [ 0925-8388 ] ; 2009.

RBID : Pascal:09-0228102

Descripteurs français

Pascal (Inist)
- Effet concentration, Propriété thermodynamique, Cinétique, Polarisation, Propriété électrochimique, Microscopie électronique balayage, Electrolyte, Batterie nickel hydrogène, Hydroxyde de potassium.

English descriptors

KwdEn :
- Concentration effect, Electrochemical properties, Electrolyte, Kinetics, Nickel hydrogen batteries, Polarization, Potassium hydroxide, Scanning electron microscopy, Thermodynamic properties.

Abstract

One may wonder if we really should use a very high concentration of KOH electrolyte in Ni-MH batteries, to keep the thermodynamic and kinetic properties of the alloy, while this solution is very aggressive to the used alloys. In this work we present a comparative study, using different techniques of two concentrations, 1 M and 8M KOH electrolytes. The maximum capacity values are 295 mAh g^-1 and 237 mAh g^-1, the loss in capacity, after 23 cycles, are of 10% and 58%, the polarization after the activation are 110 mV and 360 mV and the thickness of the corrosion layer, on the electrode surface, are 7 nm and 42 nm, for the 1 M and 8 M KOH electrolytes, respectively. These results showed that replacing the solution 8 M with 1 M improves the performance of Ni-MH batteries and leads to better results.

Affiliations:

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Le document en format XML

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 and 237 mAh g<sup>-1</sup>
, the loss in capacity, after 23 cycles, are of 10% and 58%, the polarization after the activation are 110 mV and 360 mV and the thickness of the corrosion layer, on the electrode surface, are 7 nm and 42 nm, for the 1 M and 8 M KOH electrolytes, respectively. These results showed that replacing the solution 8 M with 1 M improves the performance of Ni-MH batteries and leads to better results.</div>
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 and 237 mAh g<sup>-1</sup>
, the loss in capacity, after 23 cycles, are of 10% and 58%, the polarization after the activation are 110 mV and 360 mV and the thickness of the corrosion layer, on the electrode surface, are 7 nm and 42 nm, for the 1 M and 8 M KOH electrolytes, respectively. These results showed that replacing the solution 8 M with 1 M improves the performance of Ni-MH batteries and leads to better results.</s0>
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A comparative study, of 1 M and 8 M KOH electrolyte concentrations, used in Ni-MH batteries

A comparative study, of 1 M and 8 M KOH electrolyte concentrations, used in Ni-MH batteries

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri