Tuning Shell Thickness of MnO/C Core-shell Nanowires for Optimum Performance of Lithium-ion Batteries

doi:10.1007/s40242-017-7223-6

Chemical Research in Chinese Universities ›› 2017, Vol. 33 ›› Issue (6): 924-928.doi: 10.1007/s40242-017-7223-6

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Tuning Shell Thickness of MnO/C Core-shell Nanowires for Optimum Performance of Lithium-ion Batteries

ZHANG Dan¹, LI Guangshe¹, FAN Jianming², LI Baoyun¹, LI Liping¹

1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China;
2. Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China

Received:2017-06-26 Revised:2017-08-04 Online:2017-12-01 Published:2017-10-23
Contact: LI Liping,E-mail:lipingli@jlu.edu.cn E-mail:lipingli@jlu.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(Nos.21025104, 21271171, 91022018).

Abstract

Abstract: MnO/C core-shell nanowires with varying carbon shell thickness were synthesized via calcining resorcinol-formaldehyde resin(RF) with different amounts of hydrothermally synthesized MnO₂ nanowires. The relationship between the carbon shell thickness and the anode performance of the MnO/C materials was discussed. With a suitable carbon shell thickness(6.8 nm), the MnO/C core-shell nanowires exhibit better cycling and rate performance than those with a smaller or larger thickness. The TEM results show that after 50 cycles, the core-shell structure with this thickness can be retained, which leads to superior performance. This contribution provides a significant guiding model for optimizing the electrochemical performance of MnO/C core-shell materials by controlling the thickness of carbon shells.

Key words: Anode, MnO, Conductivity, Capacity

ZHANG Dan, LI Guangshe, FAN Jianming, LI Baoyun, LI Liping. Tuning Shell Thickness of MnO/C Core-shell Nanowires for Optimum Performance of Lithium-ion Batteries[J]. Chemical Research in Chinese Universities, 2017, 33(6): 924-928.

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Tuning Shell Thickness of MnO/C Core-shell Nanowires for Optimum Performance of Lithium-ion Batteries

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