Journal
NANO RESEARCH
Volume 11, Issue 7, Pages 3791-3801Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-017-1953-0
Keywords
doped carbon nanofibers; carbothermic reduction; anodes; lithium-ion batteries; sodium-ion batteries
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Funding
- National Natural Science Foundation of China [21527810, 21190041, 21521063, 11274107, 11574078, 51702095]
- Fundamental Research Funds for the Central Universities [531107040992]
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We report an in situ carbothermic reduction process to prepare osiers-sprout-like heteroatom-doped carbon nanofibers. The dosage of copper salts and a unique annealing process have a crucial effect on the development of this unique carbon structure. A systematic analysis is performed to elucidate the possible mechanism of synthesis of the carbon nanofibers decorated with carbon bubbles. As anodes for rechargeable lithium/sodium ion batteries, the heteroatom-doped nanofibers exhibit high reversible capacities and satisfactory long-term cycling stabilities. The osiers-sprout-like heteroatom-doped carbon nanofiber electrodes deliver an ultrastable cycling performance with reversible capacities of 480 and 160 mAh.g(-1) for lithium-ion and sodium-ion batteries after 900 cycles at a current density of 800 mA.g(-1), respectively.
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