Urchin-like MnO/C microspheres as high-performance lithium-ion battery anode

Manganese oxide (MnO) is prospective as anode material for lithium-ion batteries (LIBs) due to its low insertion voltage and high reversible capacity. Here, urchin-like MnO microspheres with carbon coating (u-MnO/C) are synthesized through hydrothermal method, and its lithium storage performance is...

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Veröffentlicht in:Ionics 2021-04, Vol.27 (4), p.1423-1428
Hauptverfasser: Zhang, Lei, Shen, Lian, Liu, Yangai, Suo, Guoquan
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creator Zhang, Lei
Shen, Lian
Liu, Yangai
Suo, Guoquan
description Manganese oxide (MnO) is prospective as anode material for lithium-ion batteries (LIBs) due to its low insertion voltage and high reversible capacity. Here, urchin-like MnO microspheres with carbon coating (u-MnO/C) are synthesized through hydrothermal method, and its lithium storage performance is investigated. The unique urchin-like structures of u-MnO/C endow it high surface area which provides sufficient contact with electrolyte. The carbon coating can effectively suffer volume change of u-MnO during charge/discharge process. Meanwhile, the carbon coating can effectively improve the conductivity of u-MnO-based anode. Due to the above features, u-MnO/C delivers high initial capacity of 845 mAh g −1 , and an obvious activation process is observed at the beginning of the cycles thanks to the abundant invasion of the electrolyte into u-MnO/C. The large capacity of 723 mAh g -1 can still be achieved after 80 cycles. This work provides a promising guide for designing high-performance LIBs electrode materials.
doi_str_mv 10.1007/s11581-021-03921-5
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subjects Anode effect
Carbon
Chemistry
Chemistry and Materials Science
Coating
Condensed Matter Physics
Electrochemistry
Electrode materials
Electrolytes
Energy Storage
Lithium
Lithium-ion batteries
Manganese oxides
Microspheres
Optical and Electronic Materials
Original Paper
Rechargeable batteries
Renewable and Green Energy
title Urchin-like MnO/C microspheres as high-performance lithium-ion battery anode
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