Optimal hydrothermal synthesis of hierarchical porous ZnMn2O4 microspheres with more porous core for improved lithium storage performance

Ni, Taolai, Zhong, Yijun, Sunarso, Jaka, Zhou, Wei, Cai, Rui and Shao, Zongping (2016) Optimal hydrothermal synthesis of hierarchical porous ZnMn2O4 microspheres with more porous core for improved lithium storage performance. Electrochimica Acta, 207 58-65. doi:10.1016/j.electacta.2016.04.098


Author Ni, Taolai
Zhong, Yijun
Sunarso, Jaka
Zhou, Wei
Cai, Rui
Shao, Zongping
Title Optimal hydrothermal synthesis of hierarchical porous ZnMn2O4 microspheres with more porous core for improved lithium storage performance
Formatted title
Optimal hydrothermal synthesis of hierarchical porous ZnMn2O4 microspheres with more porous core for improved lithium storage performance
Journal name Electrochimica Acta   Check publisher's open access policy
ISSN 0013-4686
1873-3859
Publication date 2016-07-20
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.electacta.2016.04.098
Open Access Status Not Open Access
Volume 207
Start page 58
End page 65
Total pages 8
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Language eng
Formatted abstract
ZnMn2O4 spinel is a promising anode material for lithium-ion batteries (LIBs) which can utilize both conversion reaction and alloying reaction to provide its lithium storage capacity. In this study, we developed hierarchical porous ZnMn2O4 microspheres with more porous interior as high-performance anode for LIBs by adjusting the parameters of hydrothermal synthesis (e.g., temperature and time). With increasing hydrothermal temperature, the morphology of the microspheres progressively changed from a hollow interior to a porous interior, while the thickness of the more dense shell was reduced. The crystallinity of the spinel phase increased with hydrothermal temperature and time. The resultant morphologies of the samples indicate the dominant formation of hollow microspheres at 140 and 160 °C and porous microspheres with more dense shell at 180 °C. N2 adsorption-desorption isotherms reveal the dominant presence of mesopores and increased porosity with increasing temperature and time durations. Tested in a coin-type half-cell with Li counter electrode, a sample with optimized hydrothermal condition at 180 °C for 9 hours provides the optimal anode performance, retained 726 mAh g−1 capacity after 90 cycles at 500 mA g−1 current discharge rate.
Keyword Anode
Hierarchical pore
Li-ion battery
Microsphere
ZnMn2O4
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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