Fast Preparation of Porous MnO/C Microspheres as Anode Materials for Lithium-Ion Batteries
1
School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
2
Guangxi Colleges and Universities Key Laboratory of Novel Energy Materials and Related Technology, Nanning 530004, China
3
Guangxi Novel Battery Materials Research Center of Engineering Technology, Nanning 530004, China
4
The New Rural Development Research Institute, Guangxi University, Nanning 530004, China
*
Author to whom correspondence should be addressed.
Academic Editor: Thomas Nann
Nanomaterials 2017, 7(6), 121; https://doi.org/10.3390/nano7060121
Received: 27 February 2017
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Revised: 22 May 2017
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Accepted: 24 May 2017
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Published: 26 May 2017
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.
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Keywords:
lithium-ion batteries; anode materials; MnO; Co-precipitation; T-shaped microchannel reactor
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MDPI and ACS Style
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. https://doi.org/10.3390/nano7060121
AMA Style
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(6):121. https://doi.org/10.3390/nano7060121
Chicago/Turabian StyleSu, Jing, Hao Liang, Xian-Nian Gong, Xiao-Yan Lv, Yun-Fei Long, and Yan-Xuan Wen. 2017. "Fast Preparation of Porous MnO/C Microspheres as Anode Materials for Lithium-Ion Batteries" Nanomaterials 7, no. 6: 121. https://doi.org/10.3390/nano7060121
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