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Electrocatalyst composition comprising noble metal oxide supported on tin oxide

專利號
US11177483B2
公開日期
2021-11-16
申請人
BASF SE（DE Ludwigshafen am Rhein）
發(fā)明人
Andreas Haas; Domnik Bayer; Rosalba Adriana Rincon-Ovalles; Markus Kohl
IPC分類
H01M4/90; H01M4/92; C25B11/093; C25B11/097
技術(shù)領(lǐng)域
iridium,tin,oxide,ruthenium,noble,bet,catalyst,m2,ato,sb
地域： Ludwigshafen am Rhein

摘要

The present invention relates to a catalyst composition, comprising tin oxide particles which are at least partially coated by a noble metal oxide layer, wherein the composition contains iridium and ruthenium in a total amount of from 10 wt % to 38 wt %, and all iridium and ruthenium is oxidized, —has a BET surface area of from 5 to 95 m2/g, and —has an electrical conductivity at 25° C. of at least 7 S/cm.

說明書

The most intense ruthenium signal, Ru 3d typically overlaps with the Carbon 1 s-Signal. Aside from the carbon contributions in the range of 284.5 eV to 290.2 eV, doublets for Ru(0), RuO2, hydrated RuO2 and RuO3 were used for the peak fit. All of these peaks show a high degree of asymmetry and were therefore described by a LF(0.6,1,200,900) peak shape in case of RuO3 and RuO2 or LF(0.25,1,45,280) in case of hydrated RuO2. The relative signal positions and peak shapes are given in the attached table:

Oxidation Binding energy Binding energy of state of Ru 3d5/2 [eV] Ru 3d3/2 [eV] Peak shape RuO3 282.4 286.6 LF(0.6, 1, 200, 900) RuO2 280.8 285.0

權(quán)利要求

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