Discharge behaviour of electrodeposited PbO2 and Pb electrodes

Asai, Kenji; Tsubota, Masaharu; Yonezu, K.; Ando, Kotoji

doi:10.1016/0378-7753(81)80061-4

Cited by 20 publications

(14 citation statements)

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“…They have established that the highest rate of PbSO 4 oxidation is in 0.5 M H 2 SO 4 solutions (1.048 s.g.). Hattori et al [14], Mathews et al [15], Tsubota and co-workers [16] and Eckdunge and Simonsson [17] have found that the concentration of H 2 SO 4 affects not only the kinetics of the electrochemical reactions in PAM, but also the utilization of the active materials in the lead-acid battery.…”

Section: Introductionmentioning

confidence: 97%

Influence of H2SO4 concentration on lead-acid battery performance

Pavlov

Naidenov

Ruevski

2006

Journal of Power Sources

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Section: Introductionmentioning

confidence: 97%

Influence of H2SO4 concentration on lead-acid battery performance

Pavlov

Naidenov

Ruevski

2006

Journal of Power Sources

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“…As was mentioned before, the formation of PbSO^ proceeds via the "dissolution-precipitation" process (19). The loss of mass at the electrode surface for region a was anticipated to correspond to the "reductive dissolution" of Pb02 to Pb^"*", and the experimental value of^m/ûq (1.35 mg coul*^) was considered to be in good agreement with the theoretical value (1.24 mg coul'^) for the following reaction.…”

Section: Region Amentioning

confidence: 99%

“…Larger FbSO^ crystals are formed at the latter potentiostatic discharge process (19,20). Since the rate of oxidation of FbSO^ is inversely related to the crystal size (20); therefore, it becomes more and more difficult for the oxidation of FbSO^ to occur after several potential scans due to the increased crystal sizes (Figs.…”

Section: Cycle Numbermentioning

confidence: 99%

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Electrocatalysis of anodic oxygen-transfer reactions at modified lead dioxide electrodes

Hsiao

1990

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Hsiao, Yun-Lin, "Electrocatalysis of anodic oxygen-transfer reactions at modified lead dioxide electrodes " (1990 INFORMATION TO USERSThe most advanced technology has been used to photograph and reproduce this manuscript from the microfihn master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter face, while others may be from any type of computer printer.The quality of this gggdmctlom Is dependent upon the quality of the copy submitted. Brolm or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversely affect reproduction.In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion.Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand corner and continuing from left to right in equal sections with small overlaps. Each original is also photographed in one exposure and is included in reduced form at the back of the book.Photographs included in the original manuscript have been reproduced xerographically in this copy. Higher quality 6" x 9" black and white photographic prints are available for any photographs or illustrations appearing in this copy for an additional charge. Contact UMI directly to order. Signature was redacted for privacy.Signature was redacted for privacy.Signature was redacted for privacy. Relation between 0-transfer and O2 Evolution 11The prerequisite for successful 0-transfer reaction Is proposed to be the anodic discharge of H2O to produce the adsorbed OH radicals (2). 3This process has been determined to be the rate limiting step for both O2 evolution and 0-transfer reactions (3). In the absence of solution reactants, O2 evolution from the electrode surface is the only reaction.The competition between the 0-transfer and O2 evolution for the adsorbed OH radicals can be described by the mechanism shown as follows. /V\ /V\Mechanism II This mechanism requires the adsorption of two OH radicals on one edge site (5). Edge-site Pb ions are in a low coordination state, so it is possible for two OH to adsorb. The mechanism for oxygen evolution on edge Pb is shown as followed. It has been reported that there is a greater charge donation to the electrode from the 0-atoms adsorbed on the edges and corners than on the faces of a SrFeOg anode (5). Also reported was that the activation energy for two oxygen atoms to combine to give site-on bonded O2 from an edge adsorbed O2 is less than 0.8 eV on a SrFeOg anode (5), but no data were reported for that at face sites. Although it needs to break two Pb-O bonds to form one O2 from the edge Pb rather than only one as from the face adsorbed 0-0, edge cations are still concluded to catalyze O2 7 evolution better than face cations (5). How to Modify Lead Dioxide Ele...

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“…Therefore, different shapes of the cyclic voltammograms were obtained at Pb02 film deposited at different potential because of the different crystal planes exposed. It was reported that PbSO^ crystals grow via the "dissolutionprecipitation" process in sulfuric acid solution (19). Larger FbSO^ crystals are formed at the latter potentiostatic discharge process (19,20).…”

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confidence: 99%

Electrocatalysis of anodic oxygen-transfer reactions at modified lead dioxide electrodes

Hsiao

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The electrocatalytic activities were compared for pure and chloride-doped beta-Pb02 (Cl-Pb02) films on gold and platinum substrates. Rate constants were increased significantly for oxidations of Mn^"^, toluene, benzyl alcohol, dimethylsulphoxide (DMSO) and benzaldehyde in acidic media by the incorporation of CI" into the oxide films. These reactions are concluded to occur by the electrocatalytic transfer of oxygen from H2O to the reaction products. Results of X-ray diffraction studies indicate the Cl-Pb02 film continues to have the slightly distorted rutile structure of pure beta-Pb02. The observed electrocatalytic phenomena are concluded to be the beneficial

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Discharge behaviour of electrodeposited PbO2 and Pb electrodes

Cited by 20 publications

References 2 publications

Influence of H2SO4 concentration on lead-acid battery performance

Influence of H2SO4 concentration on lead-acid battery performance

Electrocatalysis of anodic oxygen-transfer reactions at modified lead dioxide electrodes

Electrocatalysis of anodic oxygen-transfer reactions at modified lead dioxide electrodes

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