Open AccessPorous ZnMnO 3 plates prepared from Zn/Mn–sucrose composite as high‐performance lithium‐ion battery anodes
Author(s) -
Zhao Chenhao,
Teng Zhaoguo,
Zhao Dan'ni,
Hu Zhibiao,
Liu Kaiyu
Publication year - 2016
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2016.0239
Subject(s) - calcination , anode , materials science , electrochemistry , composite number , porosity , lithium (medication) , chemical engineering , battery (electricity) , lithium ion battery , current density , ion , composite material , chemistry , electrode , catalysis , organic chemistry , medicine , power (physics) , physics , quantum mechanics , engineering , endocrinology
Porous ZnMnO 3 plates have been prepared by an initial formation of Zn/Mn–sucrose composite and subsequent calcination route. The influences of calcination temperatures on the structures and electrochemical performances of target ZnMnO 3 are clearly studied. At an optimal calcination temperature of 500°C, the ZnMnO 3 composed of numerous nanoparticles possesses an obvious plate‐like structure and porous property, and a Brunauer–Emmett–Teller specific surface area of ∼25.50 m 2 g −1 and average pore size of ∼19.69 nm can be reached. As lithium‐ion battery anode, the optimal ZnMnO 3 delivers a reversible (second) discharge capacity of 709.6 mAh g −1 at 0.4 A g −1 . After 100 cycles, a discharge capacity of 560.0 mAh g −1 can be retained. Even at a high current density of 1.2 A g −1 , the sample still shows a discharge capacity of 403.1 mAh g −1 . The good electrochemical performance of as‐prepared ZnMnO 3 may be attributed to its unique porous structure.