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In Situ‐Derived Porous SiO 2 /Carbon Nanocomposite from Lichens for Lithium‐Ion Batteries
Author(s) -
Liu Xin,
Xing Chao,
Li Fangnan,
Qu Jie,
Wang Chao,
Lai Chao
Publication year - 2019
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201800840
Subject(s) - nanocomposite , anode , materials science , electrochemistry , nanoporous , lithium (medication) , graphite , carbon fibers , chemical engineering , porosity , lithium ion battery , battery (electricity) , inorganic chemistry , nanotechnology , electrode , composite material , composite number , chemistry , medicine , power (physics) , physics , quantum mechanics , endocrinology , engineering
A 3D SiO 2 /carbon nanocomposite is fabricated from lichens successfully. By acid‐washing, nanoporous structure can be generated by removing inorganic compounds. Comparing with the SiO 2 /carbon nanocomposite before acid‐washing, the one after acid‐washing displays decreased electrochemical reaction resistance and better electrochemical performance as anode materials for the lithium‐ion battery. At a current density of 100 mA g −1 , the hierarchical porous SiO 2 /carbon nanocomposite after acid‐washing shows excellent cycle stability. A high reversible capacity of 583.3 mAh g −1 can still be obtained after 100 cycles, which is much higher than the theoretical capacity of graphite.