An ultrasound-assisted approach to synthesize Mn₃O₄/RGO hybrids with high capability for lithium ion batteries

Abstract

A facile, low-cost and green ultrasound-assisted method was developed to ultra-fast synthesize Mn3O4 nanosheets supported on reduced graphene oxide (RGO). Such hybrid materials exhibited ultrahigh performance as lithium ion battery (LIB) anodes, whose specific capacity reached more than 1400 mA h g(-1) after 40 cycles at a current density of 100 mA g(-1) (based on the mass of Mn3O4). The remarkably enhanced LIB performance could be attributed to their layer-by-layer aggregation structures.

One‐Step Pyro‐Synthesis of a Nanostructured Mn3O4/C Electrode with Long Cycle Stability for Rechargeable Lithium‐Ion Batteries

“…Besides nanostructuring, surface modification of electrodes using highly conductive carbonaceous additives is an effective way to improve electrical conductivity as well as accommodate the volume changes in the electrode during cycling, which can result in improvement of its cycle life. Several studies have been devoted to the enhancement of Mn 3 O 4 performance by using carbon‐based additives . Li et al.…”

“…Severals tudies have been devoted to the enhancement of Mn 3 O 4 performance by using carbon-based additives. [14,25,27,28] Li et al reported an anohybrid Mn 3 O 4 /C electrode with improved cycling stability by using ordered mesoporous carbons. After 50 cycles, the hybrid electrode delivered chargea nd discharge capacities of 501 and 512 mAh g À1 ,r espectively,u nder ac urrent density of 100 mA g À1 with 97.9 %o fC oulombic efficiency.…”

“…[27] Mn 3 O 4 /RGO (reducedg raphene oxide)h ybridsp repared by Luo et al by an ultrasound-assistedm ethod showedi ncreased capacity and rate capability. [28] In the light of the above discussion, the synergistic effect between nanostructuring and carbon-coating Mn 3 O 4 as well as an effective synthesis can be beneficial for large-scale development of highly performing electrode materials.…”

Carbon quantum dot coated Mn3O4 with enhanced performances for lithium-ion batteries

“…To solve its intrinsic drawback, an effective way is to design Mn 3 O 4 composite, typically combined with various carbon materials. 18 Another promising choice is to utilize one-dimensional carbon nanotubes due to its remarkable conductivity. 15 Graphene has also become one of the most appealing coating agents as its outstanding electrical conductivity, excellent mechanical flexibility and large specific surface area.…”

Rock‐Salt‐Templated Mn3O4 Nanoparticles Encapsulated in a Mesoporous 2D Carbon Matrix: A High Rate 2 V Anode for Lithium‐Ion Batteries with Extraordinary Cycling Stability

“…Carbon nanofiber and N‐doped graphene hybrid with Mn 3 O 4 showed capacities of 1210.4 mAh g ‐1 at 100 mA g ‐1 after 100 cycles and 1208.4 mAh g ‐1 at 88 mA g ‐1 at 150 th cycle . Luo et al have reported a still higher capacity of 1400 mAh g ‐1 at current density of 100 mA g ‐1 at the 40 th cycle for Mn 3 O 4 /RGO composite anode . Though these results are inspiring, the performance of Mn 3 O 4 @C is still not adequate particularly at high current densities (>1.0 A g ‐1 ).…”