Facile synthesis of graphene-supported mesoporous Mn3O4 nanosheets with a high-performance in Li-ion batteries

Recent advances in graphene and its metal-oxide hybrid nanostructures for lithium-ion batteries

“…N-doping can allow fast electron/ion transfer by decreasing the energy barrier, whereas uniform dispersion of the Mn 3 O 4 nanoparticle graphene significantly enhances the electro-active surface area. [329][330][331] Therefore, the N-doped Mn 3 O 4 /graphene hybrid electrode exhibited superior capacity and good rate capability. The electrochemical results suggest that without doping of nitrogen, the Mn 3 O 4 /graphene electrode exhibited a capacity of ~ 703 mAhg -1 at a current density of 200 mAg -1 , after 40 cycles.…”

Hierarchical mesoporous urchin-like Mn3O4/carbon microspheres with highly enhanced lithium battery performance by in-situ carbonization of new lamellar manganese alkoxide (Mn-DEG)

“…An effective method is preparing nano-scaled materials with special morphologies to decrease the electrons and lithium ions diffusion length, which can improve the electroactivity and rate capability of electrode materials [17,18]. The second approach is constructing nanocomposites with a carbonaceous matrix to enhance the electrical conductivity, as well as buffer the volume expansion/ contraction during the cycling process [19][20][21][22]. Another very significant strategy is designing hollow or porous micro/nanostructures which can provide more active sites and suppress volume changes and resulting pulverization [13,23].…”

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

“…5 Then, several promising transition metal oxides have been widely studied including FeO, NiO, Co 3 O 4 , Mn 3 O 4 and Fe 3 O 4 . [12][13][14] For instance, carbon layer coated Mn 3 O 4 nanocomposites obtained by solvothermal reaction displayed capacity of 473 mAh g -1 , which is about three times than that of pure Mn 3 O 4 . However, the lower electrical conductivity (10 -7 ∼ 10 -8 S cm -1 ) of Mn 3 O 4 is a main concern for commercial acceptance.…”