Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 844, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.156199
Keywords
Invar alloy; Lithium-air batteries; Catalyst; Carbon nonotubes; Nanocomposites
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Funding
- National Natural Science Foundation of China [51674297]
- Natural Science Foundation of Hunan Province [2016JJ2137]
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An invar alloy@nitrogen doped carbon nanotubes (Fe-36Ni@NCNTS) material is synthesized and applied as a cathode catalyst in lithium-oxygen batteries. The Fe-36Ni@NCNTS holds a three-dimensional network structure, providing a specific surface area of 106.7 m(2) g(-1), which could offer numerous active sites and provide channels for mass transfer. Lithium-oxygen batteries assembled by Fe-36Ni@NCNTS exhibit enhanced performance, with a specific capacity of over 6500 mhA g(-1) and more than 60 cycles at a restricted capacity of 500 mAh g(-1). Moreover, the charge overpotential for Fe-36Ni@NCNTS electrodes is extremely low (ca. 1.15 V). This work provides a new strategy for efficient catalysts in lithium-oxygen batteries. (c) 2020 Elsevier B.V. All rights reserved.
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