Article ID Journal Published Year Pages File Type
6607091 Electrochimica Acta 2016 35 Pages PDF
Abstract
The large overpotentials during oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are still big challenges for the non-aqueous lithium-oxygen batteries. In this paper, CeO2 nanoparticles on N-doped reduced graphene oxide (CeO2@N-RGO) are in-situ synthesized through a one-step hydrothermal process as binder-free cathode catalyst. The battery with CeO2@N-RGO cathode delivers a capacity of 11,900 mAh g−1 at current density of 400 mA g−1, and can cycle up to 40 times without obvious degradation at the capacity limitation of 1000 mAh g−1. The performance enhancement of the battery can be attributed to the synergetic effect of N-RGO and CeO2 nanoparyicles anchoring the formation of Li2O2. The study confirms that CeO2@N-RGO can be a potential excellent cathode catalyst for ORR and OER for rechargeable lithium-oxygen batteries.
Related Topics
Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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