Advancing Lithium–Oxygen Battery Technology with an Iron–Nitrogen‐Doped Mesoporous Core–Shell Carbon Cathode Loaded with Ruthenium(IV) Oxide Nanoparticles. Issue 5 (10th January 2017)

• Record Type: Journal Article
• Authors: Zhou, Ming; Li, Chi‐Ying Vanessa; Chan, Kwong‐Yu
• Is Part Of: Energy technology. Volume 5:Issue 5(2017:May)
• Page Start: 732
• Page End: 739
• Publication Date: 2017-01-10
• Subjects: doping -- energy storage -- lithium–oxygen batteries -- nanoparticles -- ruthenium; Energy development -- Periodicals; Power resources -- Periodicals; 333.79
• DOI: 10.1002/ente.201600468
• Languages: English
• ISSNs: 2194-4288

Abstract

Abstract: An iron‐nitrogen‐doped core–shell mesoporous carbon support loaded with a RuO2 catalyst was used as a Li–O2 cathode. Corrosion and degradation problems were avoided by doping carbon with iron and nitrogen. Well‐dispersed RuO2 in the hierarchical porous structure facilitated a reversible nanoscale solid‐phase reaction. At 2.0 A g −1 (on the basis of catalyst plus carbon support), a capacity of 10 Ah g −1 was demonstrated with a discharge potential of 2.4 V and a corresponding recharge potential of 3.6 V. On the other hand, at 1.0 A g −1, the discharge and recharge potentials are maintained at 2.5 V and 3.5 V, respectively, over 50 cycles. Abstract : The core of the matter : An Fe‐N‐doped core–shell mesoporous carbon support loaded with a RuO2 nanoparticles catalyst is used as a Li–O2 cathode. At 2.0 A g −1 (on the basis of catalyst plus carbon support), a capacity of 10 Ah g −1 was demonstrated with a discharge potential of 2.4 V and a corresponding recharge potential of 3.6 V. On the other hand, at 1.0 A g −1, the discharge and recharge potentials are maintained at 2.5 V and 3.5 V, respectively, over 50 cycles.