Study for the preparation of Cu²⁺-doped twin spherical MnCO₃ structure as an anode material for high-performance lithium-ion batteries

Abstract

Monodispersed Cu2+ doping twin spherical MnCO3 microstructures with a ratio of length to brachyaxis about 1.5:1 were prepared, characterized and used as anode for the preparation of lithium ion batteries....

Manganese Carbonate (Mn2(CO3)3) as an Efficient, Stable Heterogeneous Electrocatalyst for the Oxygen Evolution Reaction

“…The peaks at 967 and 1207 cm –1 arise from the out-of-plane bending of the CO 3 2– ions and symmetric C–O stretching of CO 3 2– ions, respectively. These peaks are the characteristic fingerprint bands observed for deposited Mn 2 (CO 3 ) 3 nanoparticles, proving the formation of Mn 2 (CO 3 ) 3 nanoparticles upon electrodeposition . Further, the presence of the broad band observed at 1,207 cm –1 is the fundamental D band related to the amorphous form of carbon present in the Mn 2 (CO 3 ) 3 nanoparticles …”

“…These peaks are the characteristic fingerprint bands observed for deposited Mn 2 (CO 3 ) 3 nanoparticles, proving the formation of Mn 2 (CO 3 ) 3 nanoparticles upon electrodeposition. 47 Further, the presence of the broad band observed at 1,207 cm −1 is the fundamental D band related to the amorphous form of carbon present in the Mn 2 (CO 3 ) 3 nanoparticles. 48 XPS spectra were measured to identify the valence states of the Mn 2 (CO 3 ) 3 /NF elements.…”

Construction of Cu2+-doped MnCO3 micro-rhombohedrons and micro-olives as promising anode materials for high performance lithium-ion batteries

“…In the first cycle, the reduction peak is located at 0.10 V, which corresponds to the reductive conversion of Mn 2+ to Mn and the appearance of the SEI layer. 24 In the subsequent cycles, the reduction peaks shift to 0.37 V (2nd) and 0.30 V (3rd), and the lower peak current displays the polarization of the electrodes. 10 According to previous reports, MnCO 3 materials were decomposed into Mn metal and Li 2 CO 3 during the discharge process, then part of Li 2 CO 3 was decomposed into Li 2 O, while Mn 0 was oxidized to MnO, which resulted in the recovery of MnO.…”