Abstract
In this work, we synthesize inexpensive Vulcan XC-72 carbon supported Fe2O3 nanoparticles (Fe2O3/XC) as an oxygen evolution reaction (OER) catalyst for non-aqueous lithium-oxygen batteries. It is demonstrated that the battery with the Fe2O3/XC cathode exhibits a charge voltage plateau of 4.01 V at a current density of 200 mA g-1, which is 0.43 V lower than that with the pure XC carbon cathode. The battery also presents an outstanding rate capability, giving a charge voltage plateau of 3.99, 4.01 and 4.15 V at the current density of 100, 200 and 400 mA g-1, respectively. Furthermore, the battery can be operated for 50 cycles at a fixed capacity of 500 mA h g-1 without obvious degradation, showing its superior cycling stability. The results suggest that the iron oxide is a cost-effective catalyst for non-aqueous lithium-oxygen batteries.
Original language | English |
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Pages (from-to) | 545-551 |
Number of pages | 7 |
Journal | Electrochimica Acta |
Volume | 211 |
DOIs | |
Publication status | Published - 1 Sept 2016 |
Externally published | Yes |
Keywords
- catalyst
- charge voltage
- iron oxide
- Non-aqueous lithium-oxygen batteries
- oxygen evolution reaction
ASJC Scopus subject areas
- Chemical Engineering(all)
- Electrochemistry