Manganese oxides nanoparticles have attracted great attention in recent years as they have been used as promising anode materials in lithium ion batteries (LIBs). Manganese oxides exhibit high theoretical specific capacity; however, there are some obstacles in the efficient performance of the LIBs such as particle agglomeration, low rate performance, large voltage hysteresis, and cycling life. Potentially, fabricating nanoscale manganese oxide with hollow structures could solve these obstacles due to the high surface area and loading capacity. Different approaches have been developed to synthesize hollow manganese oxide nanoparticles; however materials to date have large particle diameters and low surface area. We report a nanoscale oxidation of MnO that leads to a Kirkendall effect to synthesize high surface area hollow Mn3O4 nanoparticles exhibiting uniform shape and size. The synthesized hollow Mn3O4 were attached to MWCNT and its electrochemical measurements were carried out in coin cells. Due to their hollow interior and high surface area, the hollow Mn3O4 nanoparticles as anode materials, exhibit high reversible capacity. The starting MnO sample was prepared according to the ultra-large scale synthesis reported by Hyeon, so the reaction is scalable and reproducible.

Synthesis and characterization of hollow Mn3O4 nanoparticles as anode materials for lithium ion batteries

253rd National Meeting (2017)

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