Surface-enabled superior lithium storage of high-quality ultrathin NiO nanosheets

A Simple Synthesis of Two-Dimensional Ultrathin Nickel Cobaltite Nanosheets for Electrochemical Lithium Storage

“…However, there is little report about synthesis of freestanding 2D NiCo 2 O 4 nanostructures for electrochemical lithium storage applications. It is believable that 2D NiCo 2 O 4 nanostructures could maximize electron transport and ion diffusion and eliminate the obstructed ion diffusion process in some other nanomaterials and the bulk counterparts [31][32][33]. Additionally, the large volume variation of NiCo 2 O 4 electrode materials could also be alleviated in the 2D nanostructures with enough free interspace [23,34].…”

“…To evaluate the electrochemical performances of the assynthesized NiCo 2 O 4 nanosheets, CR2025-type half-cell system was constructed as described in our previously published papers [5,33]. Typically, 70 wt% active materials, 20 wt% Super P carbon (conducting material), and 10 wt% polyvinylidene fluoride (PVDF, binder) were first ground uniformly within an agate mortar for about 30 minutes.…”

Silver-nickel oxide core-shell nanoparticle array electrode with enhanced lithium-storage performance

“…In addition, NiO has a higher density ($6.8 g cm À3 ) than graphite ($2.2 g cm À3 ), which enables simple machining technology. However, the poor electrical conductivity and large volume swing during cycling hinder the practical application of NiO anode [6][7][8]. Many efforts have been devoted to enhance the performance of NiO anodes via improving the conductivity and buffering the volume swing [9][10][11][12].…”

A facile solution combustion synthesis of nanosized amorphous iron oxide incorporated in a carbon matrix for use as a high-performance lithium ion battery anode material

“…Transition metal oxides, including those of iron [3][4][5] , cobalt [6][7][8] , manganese [9][10][11][12] , nickel 13,14 , and copper [15][16][17] , have attracted particular attention as anode replacements because of their higher theoretical capacities when compared to commercial graphite and the potential to increase their rate capability by more finely controlling their nanostructure. 18,19 Iron oxides are particularly attractive in this regard given their high capacities, low cost, environmental friendliness, and the natural abundance of iron.…”