Porous Graphene Nanoarchitectures: An Efficient Catalyst for Low Charge-Overpotential, Long Life, and High Capacity Lithium–Oxygen Batteries

• Published in: Nano letters Vol. 14; no. 6; pp. 3145 - 3152
• Main Authors: Sun, Bing, Huang, Xiaodan, Chen, Shuangqiang, Munroe, Paul, Wang, Guoxiu
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 11.06.2014
• Subjects: Applied sciences; Architecture; Catalysts; Catalytic methods; Cathodes; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Direct energy conversion and energy accumulation; Discharge; Electrical engineering. Electrical power engineering; Electrical power engineering; Electrochemical conversion: primary and secondary batteries, fuel cells; Exact sciences and technology; Fullerenes and related materials; diamonds, graphite; Graphene; Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties; Materials science; Methods of nanofabrication; Nanocrystals; Nanostructure; Physics; Porosity; Specific materials; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); ruthenium nanocrystals; Lithium−oxygen battery; cathode catalyst; porous graphene; Catalysts; Porous electrode; Porous materials; Nanostructures; Ruthenium additions; Lithium battery; Pore size; Electrochemical properties; Graphene; Microstructure; Catalyst activity; Nanostructured materials; Nanocrystal

The electrochemical performance of lithium–oxygen (Li–O2) batteries awaits dramatic improvement in the design of porous cathode electrodes with sufficient spaces to accommodate the discharge products and discovery of effective cathode catalysts to promote both oxygen reduction reactions and oxygen e...