High-Performance Oxygen Redox Catalysis with Multifunctional Cobalt Oxide Nanochains: Morphology-Dependent Activity

作者：Menezes Prashanth W; Indra Arindam; Gonzalez Flores Diego; Sahraie Nastaran Ranjbar; Zaharieva Ivelina; Schwarze Michael; Strasser Peter^*; Dau Holger; Driess Matthias

来源：ACS Catalysis, 2015, 5(4): 2017-2027.

DOI：10.1021/cs501724v

• multifunctional catalyst
• cobalt oxide
• oxygen evolution
• water oxidation
• oxygen reduction
• morphology

Future advances in renewable and sustainable energy require advanced materials based on earth-abundant elements with multifunctional properties. The design and the development of cost-effective, robust, and high-performance catalysts that can convert oxygen to water, and vice versa, is a major challenge in energy conversion and storage technology. Here we report cobalt oxide nanochains as multifunctional catalysts for the electrochemical oxygen evolution reaction (OER) at both alkaline and neutral pH, oxidant-driven, photochemical water oxidation in various pH, and the electrochemical oxygen reduction reaction (ORR) in alkaline medium. The cobalt oxide nanochains are easily accessible on a multigram scale by low-temperature degradation of a cobalt oxalate precursor. What sets this study apart from earlier ones is its synoptical perspective of reversible oxygen redox catalysis in different chemical and electrochemical environments.

• 出版日期2015-4