Cycling performance of Mn2O3 porous nanocubes and hollow spheres for lithium-ion batteries

Qian Sun; Tik Lun Leung; Kam Chun Sing; Aleksandra B. Djurišić; Mao Hai Xie; Alan M. C. Ng; Hangkong Li; Kaimin Shih

doi:10.1117/12.2251966

24 February 2017 Cycling performance of Mn₂O₃ porous nanocubes and hollow spheres for lithium-ion batteries

Qian Sun, Tik Lun Leung, Kam Chun Sing, Aleksandra B. Djurišić, Mao Hai Xie, Alan M. C. Ng, Hangkong Li, Kaimin Shih

Proceedings Volume 10105, Oxide-based Materials and Devices VIII; 1010523 (2017) https://doi.org/10.1117/12.2251966
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

Mn₂O₃ is a promising anode material for lithium ion battery. Two different kinds of structures of Mn₂O₃ were synthesized via solution processes, the Mn₂O₃ porous cubes and hollow spheres. Scanning electron microscope images and transmission electron microscopy images clearly show the structures. Electrochemical impedance spectroscopy and cyclic voltammetry measurements were used to characterize their electrochemical properties. As anode materials for lithium ion batteries, Mn₂O₃ porous cubes performed similarly as Mn₂O₃ hollow spheres. Both samples started with high initial capacities (1583.2 mAh/g and 1550.7 mAh/g) which were reduced to 173.3 mAh/g and 162.0 mAh/g at 100th cycle at a current density of 100 mA/g. The decrease is likely due to morphology destruction the materials in charging and discharging process.

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Qian Sun, Tik Lun Leung, Kam Chun Sing, Aleksandra B. Djurišić, Mao Hai Xie, Alan M. C. Ng, Hangkong Li, and Kaimin Shih "Cycling performance of Mn₂O₃ porous nanocubes and hollow spheres for lithium-ion batteries", Proc. SPIE 10105, Oxide-based Materials and Devices VIII, 1010523 (24 February 2017); https://doi.org/10.1117/12.2251966

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KEYWORDS

Manganese

Lithium

Electrodes

Ions

Scanning electron microscopy

Transmission electron microscopy

Oxides

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