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CCST Seminar - Zhongwei Chen

Friday, May 17, 2013 at 1:30pm to 2:30pm

Colburn Lab, Room 366 University of Delaware- Colburn Lab, University of Delaware, 150 Academy St, Newark, DE 19716-3196, USA

Advanced Non-precious Oxygen Catalysts for Metal-Air Batteries

Metal-air batteries have been considered promising as next generation energy storage systems for powering vehicles, residential applications and portable electronic devices due to their the high energy density and low cost. Widespread commercialization of rechargeable metal-air batteries hinges, however, on further reduction in materials cost, improvements of component durability, and increase in overall performance and efficiency. For the oxygen catalysts of metal-air batteries, the longstanding goals have been low cost, high catalytic activity and excellent durability. This talk will address the main challenges of the oxygen electrocatalysts for zinc-air battery and lithium-air battery by developing novel nano-engineered perovskite-carbon nanotube core-corona structured bi-functional catalysts and graphene based electrocatalysts for zinc-air and lithium-air batteries. We will also discuss how nanoengineered materials can enhance the catalytic activity and durability of oxygen electrocatalysts and how surface structures and chemical compositions of catalysts affect the electrocatalytic activity for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER).

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