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- Title
Fast Preparation of Porous MnO/C Microspheres as Anode Materials for Lithium-Ion Batteries.
- Authors
Jing Su; Hao Liang; Xian-Nian Gong; Xiao-Yan Lv; Yun-Fei Long; Yan-Xuan Wen
- Abstract
Porous MnO/C microspheres have been successfully fabricated by a fast co-precipitation method in a T-shaped microchannel reactor. The structures, compositions, and electrochemical performances of the obtained MnO/C microspheres are characterized by X-ray diffraction, field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (HRTEM), Brunauer-Emmett-Teller analysis, charge-discharge testing, cyclic voltammograms, and electrochemical impedance spectra. Experimental results reveal that the as-prepared MnO/C, with a specific surface area of 96.66 m²g-1 and average pore size of 24.37 nm, exhibits excellent electrochemical performance, with a discharge capacity of 655.4 mAhg-1 after cycling 50 times at 1 C and capacities of 808.3, 743.7, 642.6, 450.1, and 803.1 mAhg-1 at 0.2, 0.5, 1, 2, and 0.2 C, respectively. Moreover, the controlled method of using a microchannel reactor, which can produce larger specific surface area porous MnO/C with improved cycling performance by shortening lithium-ion diffusion distances, can be easily applied in real production on a large scale.
- Subjects
MANGANESE oxides; LITHIUM-ion batteries; ANODES
- Publication
Nanomaterials (2079-4991), 2017, Vol 7, Issue 6, p121
- ISSN
2079-4991
- Publication type
Article
- DOI
10.3390/nano7060121