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

• Published in: Particuology Vol. 22; no. 5; pp. 89 - 94
• Main Authors: Yu, Jianfei, Zhu, Lin, Fan, Cheng, Zan, Cheng, Hu, Ling, Yang, Shuhui, Zhang, Qiang, Zhu, Wancheng, Shi, Lin, Wei, Fei
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-10-2015
• Subjects: Li-ion batteries; Microspheres; Mn2O3; Nanostructures; Solvothermal synthesis; 分散; 应用; 微球; 溶剂热合成; 负极材料; 过渡金属氧化物; 锂离子电池; Microspheres; Mn2O3; Nanostructures; Li-ion batteries; Solvothermal synthesis
• ISSN: 1674-2001; 2210-4291
• DOI: 10.1016/j.partic.2014.10.007

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 solvotbermal treatment and they decomposed and converted into Mn2O3 microspheres at an annealing temperature of 700℃. 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.