Highly dispersed Mn2O3 microspheres: Facile solvothermal synthesis and their application as Li-ion battery anodes--颗粒学报PARTICUOLOGY

Yu, J., Zhu, L., Fan, C., Zan, C., Hu, L., Yang, S., . . . Wei, F. (2015). Highly dispersed Mn2O3 microspheres: Facile solvothermal synthesis and their application as Li-ion battery anodes. Particuology, 22, 89-94. https://doi.org/10.1016/j.partic.2014.10.007

Highly dispersed Mn₂O₃ microspheres: Facile solvothermal synthesis and their application as Li-ion battery anodes

Jianfei Yu ^a, Lin Zhu ^{a c}, Cheng Fan ^a, Cheng Zan ^b, Ling Hu ^a, Shuhui Yang ^a, Qiang Zhang ^a *, Wancheng Zhu ^c, Lin Shi ^d, Fei Wei ^a

a Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
b State Key Laboratory of Enhanced Oil Recovery, Research Institute of Petroleum Exploration & Development, China National Petroleum Corporation, Beijing 100007, China
c Department of Chemical Engineering, Qufu Normal University, Shandong 273165, China
d Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China

10.1016/j.partic.2014.10.007

Volume 22, October 2015, Pages 89-94

Received 21 August 2014, Revised 5 October 2014, Accepted 11 October 2014, Available online 7 February 2015, Version of Record 4 August 2015.

E-mail: zhang-qiang@mails.tsinghua.edu.cn

Highlights

• Mn₂O₃ microspheres were synthesized by a facile solvothermal–thermal coversion route.

• The Mn₂O₃ microspheres exhibited a high reversible capacity and good stability.

• An efficient route was proposed to fabricate nanostructured particles for advanced energy storage.

Abstract

Nanostructured transition metal oxides are promising alternative anodes for lithium ion batteries. Li-ion storage performance is expected to improve if high packing density energy particles are available. Herein, Mn₂O₃ microspheres with a ca. 18 μm diameter and a tapped density of 1.33 g/cm³ were synthesized by a facile solvothermal–thermal coversion route. Spherical MnCO₃ precursors were obtained through solvothermal treatment and they decomposed and converted into Mn₂O₃ microspheres at an annealing temperature of 700 °C. The Mn₂O₃ microspheres consisted of Mn2O3 nanoparticles with an average 40 nm diameter. These porous Mn₂O₃ microspheres allow good electrolyte penetration and provide an ion buffer reservoir to ensure a constant electrolyte supply. The Mn₂O₃ microspheres have reversible capacities of 590 and 320 mAh/g at 50 and 400 mA/g, respectively. We thus report an efficient route for the fabrication of energy particles for advanced energy storage.

Graphical abstract

Keywords

Mn₂O₃; Microspheres; Li-ion batteries; Solvothermal synthesis; Nanostructures

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