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Titolo:
COMPARISON OF THE REDUCTION BEHAVIOR OF ANODIC PBO2 FILMS ON PB-AS AND PB-BI ALLOYS IN SULFURIC-ACID
Autore:
CAI WB; LIU HT; ZHOU WF;
Indirizzi:
XIAMEN UNIV,DEPT CHEM,STATE KEY LAB PHYS CHEM SOLID SURFACES,INST CHEM XIAMEN 361005 PEOPLES R CHINA FUDAN UNIV,DEPT CHEM SHANGHAI 200433 PEOPLES R CHINA
Titolo Testata:
Journal of Applied Electrochemistry
fascicolo: 10, volume: 27, anno: 1997,
pagine: 1212 - 1216
SICI:
0021-891X(1997)27:10<1212:COTRBO>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
ACTIVE-MASS; OXIDE FILM; LEAD; CORROSION; POTENTIALS; ELECTRODE; BATTERIES; ANTIMONY;
Keywords:
PBO2 FILMS; PB-AS ALLOY; PB-BI ALLOY; REDUCTION BEHAVIOR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
27
Recensione:
Indirizzi per estratti:
Citazione:
W.B. Cai et al., "COMPARISON OF THE REDUCTION BEHAVIOR OF ANODIC PBO2 FILMS ON PB-AS AND PB-BI ALLOYS IN SULFURIC-ACID", Journal of Applied Electrochemistry, 27(10), 1997, pp. 1212-1216

Abstract

The reduction behaviour of the anodic PbO2 films on Pb-3 at % As and Pb-3 at % Bi has been investigated using in situ photocurrent spectroscopy, impedance methods, chronoamperometry and linear sweep voltammetry. The experimental results show that most of the PbO2 in the film canbe converted to PbSO4 in about 2s at 1.0 V (vs Hg/Hg2SO4). Alloying with both As and Bi slightly retards this reduction process. The remaining PbO2 can only be reduced at a lower potential, (e.g., 0.60 V vs Hg/Hg2SO4) to t-PbO. Alloying with As slows down this second reduction process, while alloying with Bi accelerates it markedly.

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Documento generato il 01/12/20 alle ore 10:45:58