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MoO 3 /Carbon Dots Composites for Li‐Ion Battery Anodes
Author(s) -
Xu Zhanwei,
Zhao Yixing,
He Juju,
Wang Tian,
Yang Jun,
Shen Xuetao,
Cao Liyun,
Huang Jianfeng
Publication year - 2019
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201900140
Subject(s) - anode , materials science , nucleation , nanoparticle , electrochemistry , current density , battery (electricity) , hydrothermal circulation , chemical engineering , lithium (medication) , carbon fibers , lithium ion battery , ion , conductivity , nanotechnology , composite material , electrode , composite number , chemistry , medicine , power (physics) , physics , organic chemistry , quantum mechanics , endocrinology , engineering
A rice krispies sphere constructed by hundreds of MoO 3 nanoparticles of ∼100 nm with carbon dots of ∼5 nm (MoO 3 /CDs) is created via a one‐pot hydrothermal synthesis process using CDs as nucleation seeds. The MoO 3 /CDs shows a reversible capacity of 897.5 mAh g −1 after 100 cycles at a current density of 0.1 A g −1 as an anode material for lithium‐ion battery. Moreover, a discharge capacity of 507 mAh g −1 is achieved after 255 full cycles under a high current density of 0.5 A g −1 . The electrochemical performance of the MoO 3 /CDs is promising due to the MoO 3 nanoparticles connected by ultrafine CDs with excellent conductivity. The unique structure effectively alleviate the volume change during the charging/discharging process and improve the ionic and electronic mobility to enhancing the reversible reaction of MoO 3 .