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Preparation of Zn 2 SnO 4 /SnO 2 @Mn 2 O 3 Microbox Composite Materials with Enhanced Lithium‐Storage Properties
Author(s) -
Li Qingyuan,
Wang Yong,
Wang Dongxia,
Guo Wenbin,
Zhang Fanchao,
Wang Chao,
Niu Shanshan
Publication year - 2017
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201600917
Subject(s) - materials science , calcination , lithium (medication) , hydrothermal circulation , nanoparticle , electrochemistry , composite number , chemical engineering , nanotechnology , chemistry , electrode , catalysis , composite material , medicine , biochemistry , engineering , endocrinology
In this work, the composite materials of Zn 2 SnO 4 /SnO 2 @Mn 2 O 3 microboxes have been synthesized after the calcination of precursor Zn 2 SnO 4 /SnO 2 @MnCO 3 , which is prepared by using a simple hydrothermal process. Preliminary results of the electrochemical performances of Zn 2 SnO 4 /SnO 2 @Mn 2 O 3 microboxes, Zn 2 SnO 4 /SnO 2 microboxes, and Mn 2 O 3 nanoparticles have been also reported. On the one hand, the robust ZTO/SnO 2 hollow microboxes can not only buffer the volume variation, but also efficiently prevent the aggregation of Mn 2 O 3 nanoparticles. On the other hand, Mn 2 O 3 nanoparticles provide more active sites, owing to the nanostructures of Mn 2 O 3 , as well as consolidate the hollow cubic structure during the lithium insertion/extraction process. In virtue of the synergistic effects of Zn 2 SnO 4 /SnO 2 and Mn 2 O 3 , the Zn 2 SnO 4 /SnO 2 @Mn 2 O 3 microboxes exhibit a higher initial discharge capacity (1505.3 mAhg −1 ) as well as a better cycling performance (597.2 mAhg −1 after 100 cycles) and rate capacity compared to Zn 2 SnO 4 /SnO 2 and Mn 2 O 3 .