Facile preparation of Mn₃O₄octahedra and their long-term cycle life as an anode material for Li-ion batteries

Abstract

We describe the simple preparation of octahedral Mn 3 O 4 nanomaterials with a typical diameter around 300-400 nm using a one step dealloying of MnAl alloy at room temperature. The as-made sample exhibits high performance as an anode material for Li-ion batteries. Electrochemical measurements reveal that the Mn 3 O 4 octahedra have an ultralong cycle life with capacity retentions of 81.3% and 77.8% after 500 cycles at 100 and 300 mA g À1 , respectively. Moreover, the Mn 3 O 4 octahedra deliver a stable capacity at a high rate of 1000 mA g À1 with a good rate capability. The as-made Mn 3 O 4 octahedra exhibit great potential for application as anode materials for Li-ion batteries with the advantages of unique performance and easy preparation.

Nanostructured Conjugated Ladder Polymers for Stable and Fast Lithium Storage Anodes with High‐Capacity

“…Nevertheless, the electrochemical properties of SBBL are still better than that of the most state-of-the-art organic electrodes ever reported. Furthermore, the above demonstrated high rate long-term cycling performance of BBL and SBBL nanoparticle polymers is not only better than their monomer ( Figure S9, Supporting Information), but also better than some of previously reported high-performance inorganic metal oxide anodes, [39][40][41] such as Fe 3 O 4 nanoparticles/porous carbon [ 42 ] (around 400 mAh g −1 during the 500th cycle at 2 C) and Mn 3 O 4 octahedra [ 43 ] (around 255 mAh g −1 during the 500th cycle at 1 C). In summary, the nanoparticles of BBL and its analogue SBBL were prepared by using reprecipitation method.…”

A Simple Dip-coating Approach for Preparation of Three-dimensional Multilayered Graphene-Metal Oxides Hybrid Nanostructures as High Performance Lithium-Ion Battery Electrodes

“…The oxidation peak centered at 2.1 V in the GM-NF scan is due to delithiation of the reduced graphene layers. Interestingly, the position of the cathodic peak shifted from 0.17 to 0.3 V, which is mainly attributed to a radical lithium driven structural modification [44][45][46]. In contrast, the oxidation peak was almost identical to that of the first anodic scan.…”

Dealloying to porous hybrid manganese oxides microspheres for high performance anodes in lithium ion batteries

“…The capacities of the nano-flowers precursors, MnO and Mn 3 O 4 electrodes all fade quickly after several cycles. However, the capacities of porous MnO x microsphere electrodes maintain an increasing trend, which is normally observed for transition metal oxides [21,31,37,38]. Reversible capacity as high as 901 mAh g À1 after 100 cycles can still be obtained at a current density of 200 mA g À1 .…”

“…S2b). It suggests that such conditions are sufficient for the decomposition of the Mn-based precursors and the growth of MnO [21] and Mn 3 O 4 [31,32].…”

“…alloys into NaOH solution under ambient atmospheric conditions and can readily scale up for mass production. More recently, Hao et al reported that the capacity of Mn 3 O 4 octahedra [31] for LIBs anodes dropped to 335 mA h g À1 after 50 cycles at 100 mA g À1 . As discussed above, porous structures may reduce the intrinsic strain-stress caused by the severe volume change of M x O y electrode materials, and nanoscale particles could shorten the electronic and ionic transport pathway.…”