Open AccessEffects of Phosphorous-doping on Electrochemical Performance and Surface Chemistry of Soft Carbon Electrodes
Author(s) -
Minjeong Kim,
Jin-Tak Yeon,
Ki-Joo Hong,
Sang-Ick Lee,
NamSoon Choi,
SungSoo Kim
Publication year - 2013
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
eISSN - 1229-5949
pISSN - 0253-2964
DOI - 10.5012/bkcs.2013.34.7.2029
Subject(s) - electrochemistry , electrode , doping , carbon fibers , chemistry , nanotechnology , inorganic chemistry , materials science , optoelectronics , composite material , composite number
The impact of phosphorous (P)-doping on the electrochemical performance and surface chemistry of soft carbon is investigated by means of galvanostatic cycling and ex situ X-ray photoelectron spectroscopy (XPS). P-doping plays an important role in storing more Li ions and discernibly improves reversible capacity. However, the discharge capacity retention of P-doped soft carbon electrodes deteriorated at 60 °C compared to non-doped soft carbon. This poor capacity retention could be improved by vinylene carbonate (VC) participating in forming a protective interfacial chemistry on soft carbon. In addition, the effect of P-doping on exothermic thermal reactions of lithiated soft carbon with electrolyte solution is discussed on the basis of differential scanning calorimetry (DSC) results.close0