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Nanomaterials 2017, 7(6), 121; doi:10.3390/nano7060121

Fast Preparation of Porous MnO/C Microspheres as Anode Materials for Lithium-Ion Batteries

School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
Guangxi Colleges and Universities Key Laboratory of Novel Energy Materials and Related Technology, Nanning 530004, China
Guangxi Novel Battery Materials Research Center of Engineering Technology, Nanning 530004, China
The New Rural Development Research Institute, Guangxi University, Nanning 530004, China
Author to whom correspondence should be addressed.
Academic Editor: Thomas Nann
Received: 27 February 2017 / Revised: 22 May 2017 / Accepted: 24 May 2017 / Published: 26 May 2017
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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 m2·g−1 and average pore size of 24.37 nm, exhibits excellent electrochemical performance, with a discharge capacity of 655.4 mAh·g−1 after cycling 50 times at 1 C and capacities of 808.3, 743.7, 642.6, 450.1, and 803.1 mAh·g−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. View Full-Text
Keywords: lithium-ion batteries; anode materials; MnO; Co-precipitation; T-shaped microchannel reactor lithium-ion batteries; anode materials; MnO; Co-precipitation; T-shaped microchannel reactor

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Su, J.; Liang, H.; Gong, X.-N.; Lv, X.-Y.; Long, Y.-F.; Wen, Y.-X. Fast Preparation of Porous MnO/C Microspheres as Anode Materials for Lithium-Ion Batteries. Nanomaterials 2017, 7, 121.

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