4 years ago

Hierarchical Mn3O4 Microplates Composed of Stacking Porous Nanosheets for High-Performance Lithium Storage

Hierarchical Mn3O4 Microplates Composed of Stacking Porous Nanosheets for High-Performance Lithium Storage
Pan-Pan Wang, Hao Bin Wu, Xue-Yin Sun, Cheng-Yan Xu, Liang Zhen, Fei-Xiang Ma
Transition metal oxide based anodes with high capacities and long cycle lifetimes are considered promising candidates to substitute the conventional graphite electrodes with a relatively low capacity. In this work, hierarchical Mn3O4 microplates with a lateral size of approximately 4.9 μm, composed of stacking porous nanosheets with thicknesses as small as 10 nm, were synthesized by using a precursor conversion method. Such a nanosheet stacking arrangement possesses an unusual concave structure with a tight center and loose edge. Owing to the highly open hierarchical structure and good electronic conductivity from the in situ carbon, the as-obtained hierarchical Mn3O4 microplate electrode exhibits remarkable cyclability up to 300 cycles at 500 mA g−1, accompanied with good rate capability (418 mA h g−1 at 2 A g−1). Come to an arrangement: Hierarchical Mn3O4 microplates composed of stacking porous nanosheets manifest superior lithium storage properties.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/celc.201700323

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