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Die feste Lewis‐Säure HNb3O8 (HNO) und an Sauerstoff‐Fehlstellen reiches HNO‐v wurden für Li‐S‐Batterien untersucht. Wie B. Huang, Y. Du et al. in ihrem Forschungsartikel auf S. 11615 zeigen, beeinträchtigen Sauerstoff‐Fehlstellen die Leistung hauptsächlich dadurch, dass sie die Leitfähigkeit verringern und die Adsorption von Polysulfid auf der Katalysatoroberfläche vermindern.
Oxygen vacancies are usually considered to be beneficial in catalytic conversion of polysulfides in lithium–sulfur batteries. Now it is demonstrated that the conversion of polysulfides was hindered by oxygen vacancies on ultrathin niobic acid. The inferior performance induced by the oxygen vacancy was mainly attributed to the decreased electric conductivity as well as the weakened adsorption of polysulfides...
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