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Titolo:
The surface structure and the electrochemical properties of hydrogen-absorbing alloys treated with an HCl aqueous solution
Autore:
Ise, T; Murata, T; Hirota, Y; Imoto, T; Nogami, M; Nakahori, S;
Indirizzi:
Sanyo Elect Co Ltd, Soft Energy Co, Twicell Div, Tokushima 7710213, Japan Sanyo Elect Co Ltd Tokushima Japan 7710213 Div, Tokushima 7710213, Japan
Titolo Testata:
JOURNAL OF ALLOYS AND COMPOUNDS
, volume: 307, anno: 2000,
pagine: 324 - 332
SICI:
0925-8388(20000714)307:<324:TSSATE>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
METAL HYDRIDE BATTERIES; LANI5 ELECTRODES; DEGRADATION; PERFORMANCE;
Keywords:
hydrogen storage materials; energy storage materials; electrode materials; electrochemical reaction;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Ise, T Sanyo Elect Co Ltd, Soft Energy Co, Twicell Div, 139-32 Toyohisa, Tokushima 7710213, Japan Sanyo Elect Co Ltd 139-32 Toyohisa Tokushima Japan7710213 , Japan
Citazione:
T. Ise et al., "The surface structure and the electrochemical properties of hydrogen-absorbing alloys treated with an HCl aqueous solution", J ALLOY COM, 307, 2000, pp. 324-332

Abstract

The surface structure and the electrochemical properties of hydrogen-absorbing alloys treated with an HCl aqueous solution were investigated. This process was observed to form a porous layer rich in nickel on the alloy surface because HCl partially dissolved some of the other elements from the alloy. Therefore, the discharge capacity increased by increasing the reaction surface area. However, the overvoltage of an excessively treated alloy increased along with the depth of discharge as the surface layer of the alloy oxidized and thickened. The effects of treatment on alloys were found to be determined by the hydrogen ion amounts in the acid solution per unit mass ofthe alloy, regardless of the concentration and volume of the solution. Theoptimal hydrogen ion amount for a treatment solution was found to be 0.1 mol/kg. (C) 2000 Elsevier Science S.A. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/08/20 alle ore 19:44:43