High-Pressure High-Temperature Synthesis of MoS2/Holey Graphene Hybrids and Their Performance in Li-Ion Batteries

Svetlana G. Stolyarova, Mikhail A. Kanygin, Victor O. Koroteev, Yury V. Shubin, Dmitry A. Smirnov, Alexander V. Okotrub, Lyubov G. Bulusheva

Результат исследования: Научные публикации в периодических изданияхстатья

11 Цитирования (Scopus)

Аннотация

Hybrids of holey graphene (HG) and MoS2 have been prepared by a treatment of few-layered HG and amorphous MoS3, taken in a weight ratio of ≈5 and ≈10%, at 100 bar and 600 °C under vacuum. A study of the products by electron microscopy, X-ray diffraction, Raman scattering, and X-ray photoelectron spectroscopy has detected coating of graphene stacks by thin MoS2 layers. The near-edge X-ray absorption fine structure spectroscopy has revealed a covalent bonding between MoS2 and HG components. A hybrid with 5 wt.% of MoS2 showed a better rate capability for Li-ion intercalation/deintercalation as compared to the isolated HG and a hybrid with a higher MoS2 loading. Owing to the electrochemical impedance spectroscopy measurements, this was attributed to a faster charge transport in the hybrid with the thin MoS2 coating.

Язык оригиналаанглийский
Номер статьи1700262
Число страниц6
ЖурналPhysica Status Solidi (B) Basic Research
Том255
Номер выпуска1
DOI
СостояниеОпубликовано - 1 янв 2018

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