TY - JOUR
T1 - Synthesis of carbon-coated silicon nanoparticles by induction thermal plasma for lithium ion battery
AU - Zhang, Xiaoyu
AU - Hayashida, Ririko
AU - Tanaka, Manabu
AU - Watanabe, Takayuki
N1 - Funding Information:
Zhang Xiaoyu was sponsored by the China Scholarship Council .
Publisher Copyright:
© 2020 Elsevier B.V.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/6/30
Y1 - 2020/6/30
N2 - Synthesis of silicon nanoparticles with carbon coating by induction thermal plasma was investigated experimentally. Crystalline silicon was injected into plasma as raw material, and nanoparticles were produced through quenching process. Ethylene was chosen as carbon source for coating and injected into plasma downstream as a counter-flow with different gas flow rates to understand the effect on products. Synthesized silicon nanoparticles were successfully coated with carbon materials, and had an average diameter around 70 nm which was independent from ethylene flow rate. Obtained carbon coating was amorphous and consisted of sp2 carbons and sp3 carbons. Molar ratio of sp2 carbons to sp3 carbons, as well as the hydrogen content, decreased with higher ethylene gas flow rate. Increased concertation of hydrogen radicals was believed as the reason for those phenomenon due to etching effect on carbon coating. The above results are significant for the better performance of lithium ion batteries.
AB - Synthesis of silicon nanoparticles with carbon coating by induction thermal plasma was investigated experimentally. Crystalline silicon was injected into plasma as raw material, and nanoparticles were produced through quenching process. Ethylene was chosen as carbon source for coating and injected into plasma downstream as a counter-flow with different gas flow rates to understand the effect on products. Synthesized silicon nanoparticles were successfully coated with carbon materials, and had an average diameter around 70 nm which was independent from ethylene flow rate. Obtained carbon coating was amorphous and consisted of sp2 carbons and sp3 carbons. Molar ratio of sp2 carbons to sp3 carbons, as well as the hydrogen content, decreased with higher ethylene gas flow rate. Increased concertation of hydrogen radicals was believed as the reason for those phenomenon due to etching effect on carbon coating. The above results are significant for the better performance of lithium ion batteries.
UR - http://www.scopus.com/inward/record.url?scp=85085646626&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85085646626&partnerID=8YFLogxK
U2 - 10.1016/j.powtec.2020.05.084
DO - 10.1016/j.powtec.2020.05.084
M3 - Article
AN - SCOPUS:85085646626
SN - 0032-5910
VL - 371
SP - 26
EP - 36
JO - Powder Technology
JF - Powder Technology
ER -
