Synthesis of MnCO₃/Multiwalled Carbon Nanotube Composite as Anode Material for Lithium-Ion Batteries.

A MnCO₃ /Multiwalled carbon nanotube (MnCO₃/MWCNT) composite has been successfully fabricated by an in-suit hydrothermal method. When the MnCO₃/MWCNT composite is applied as anode materials in lithium-ion batteries (LIBs), the electrodes exhibit a reversible capacity of 645 mA h g at 100 mA g after 80 cycles, reaching an initial coulombic efficiency (CE) of up to 60.6%.

Preparation of novel two-stage structure MnO micrometer particles as lithium-ion battery anode materials.

MnO micrometer particles with a two-stage structure (composed of mass nanoparticles) were produced a one-step hydrothermal method using histidine and potassium permanganate (KMnO) as reagents, with subsequent calcination in a nitrogen (N) atmosphere. When the MnO micrometer particles were utilized in lithium-ion batteries (LIBs) as anode materials, the electrode showed a high reversible specific capacity of 747 mA h g at 100 mA g after 100 cycles, meanwhile, the electrode presented excellent rate capability at various current densities from 100 to 2000 mA g (∼203 mA h g at 2000 mA g). This study developed a new approach to prepare two-stage structure micrometer MnO particles and the sample can be a promising anode material for lithium-ion batteries.