Effects of Phosphorous-doping on Electrochemical Performance and Surface Chemistry of Soft Carbon Electrodes | Zendy

Minjeong Kim | Zendy; Jin-Tak Yeon | Zendy; Ki-Joo Hong | Zendy; Sang-Ick Lee | Zendy; NamSoon Choi | Zendy; SungSoo Kim | Zendy

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Effects 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

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