Employment of boron-doped carbon materials for the anode materials of lithium ion batteries

Title
Employment of boron-doped carbon materials for the anode materials of lithium ion batteries
Authors
채유진김상옥이중기
Keywords
Energy storage materials; Gas-solid reactions; Transmission electron microscopy TEM
Issue Date
2014-01
Publisher
Journal of alloys and compounds
Citation
VOL 582, 420-427
Abstract
Plasma carbon and boron-doped carbons are prepared by gas phase synthesis technique using a plasma arc torch apparatus. The effects of boron doping on the microstructure and electrochemical performance are investigated. Transmission electron microscopy results indicate that crystalline graphitic sheets are formed when the content of boron in the carbon is higher than around 1.00 wt.% X-ray diffraction (XRD) and Raman analysis also reveal that the increased amount of boron doping results in decreased interlayer spacing and increased crystallite size of the boron-doped carbons. The boron-doped carbons exhibit not only higher reversible capacity, but also better rate capability than undoped plasma carbon, due to the formation of nano-structured carbon composite composed of both spherically shaped amorphous (hard carbon-like) and paper-shaped crystalline (graphite-like) phases. The reversible capacity remained over 390 mAh g-1 even after 200 cycles at a current density of 300 mA g 1 for the 1.00 wt.% boron-doped carbon.
URI
http://pubs.kist.re.kr/handle/201004/47048
ISSN
09258388
Appears in Collections:
KIST Publication > Article
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