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Reversibility of Noble Metal-Catalyzed Aprotic Li-O2 Batteries
- Source :
- Nano Letters. 15:8084-8090
- Publication Year :
- 2015
- Publisher :
- American Chemical Society (ACS), 2015.
-
Abstract
- The aprotic Li-O2 battery has attracted a great deal of interest because, theoretically, it can store far more energy than today’s batteries. Toward unlocking the energy capabilities of this neotype energy storage system, noble metal-catalyzed high surface area carbon materials have been widely used as the O2 cathodes, and some of them exhibit excellent electrochemical performances in terms of round-trip efficiency and cycle life. However, whether these outstanding electrochemical performances are backed by the reversible formation/decomposition of Li2O2, i.e., the desired Li-O2 electrochemistry, remains unclear due to a lack of quantitative assays for the Li-O2 cells. Here, noble metal (Ru and Pd)-catalyzed carbon nanotube (CNT) fabrics, prepared by magnetron sputtering, have been used as the O2 cathode in aprotic Li-O2 batteries. The catalyzed Li-O2 cells exhibited considerably high round-trip efficiency and prolonged cycle life, which could match or even surpass some of the best literature results. How...
- Subjects :
- Battery (electricity)
Materials science
Mechanical Engineering
chemistry.chemical_element
Bioengineering
Nanotechnology
General Chemistry
Carbon nanotube
engineering.material
Condensed Matter Physics
Electrochemistry
Energy storage
Cathode
law.invention
chemistry
law
engineering
General Materials Science
Noble metal
Carbon
Lithium–air battery
Subjects
Details
- ISSN :
- 15306992 and 15306984
- Volume :
- 15
- Database :
- OpenAIRE
- Journal :
- Nano Letters
- Accession number :
- edsair.doi...........ccd21ca6f55d148ab4f6e220c6d74cd9