Open AccessВлияние термообработки на свойства композитных кремний-углеродных анодов для литий-ионных аккумуляторов
Author(s) -
Е.В. Астрова,
А.В. Парфеньева,
А.М. Румянцев,
В.П. Улин,
М.В. Байдакова,
В.Н. Неведомский,
А.В. Нащекин
Publication year - 2020
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2020.03.48985.18067
Subject(s) - annealing (glass) , materials science , transmission electron microscopy , silicon carbide , capacitance , argon , carbide , nanocomposite , electrode , diffraction , chemical engineering , silicon , analytical chemistry (journal) , metallurgy , composite material , nanotechnology , chemistry , optics , physics , organic chemistry , engineering , chromatography
The effect of annealing temperature in argon atmosphere on the ability of Si-C nanocomposites to reversibly insert lithium was investigated. It was found that the higher the annealing temperature during the formation of the composite, the lower is the capacitance of the electrode made from it. X-ray diffraction analysis and transmission electron microscopy reveal that the reason of the capacitance decrease is formation at T 1100°C of silicon carbide of cubic modification -SiC, inactive with respect to the formation of lithium alloys or intercalates.