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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

When using a catalyst composition based on metallic iridium powder (Comparative Example 1), high activity can be achieved. However, corrosion stability is adversely affected.

When using a catalyst composition based on non-supported IrO2 powder (CE 2), activity is significantly lower.

Accordingly, the Inventive Examples show an improved balance between catalytic activity and corrosion stability.

權(quán)利要求

1
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