Nickel doped copper ferrite Ni_xCu_1−xFe₂O₄ for a high crystalline anode material for lithium ion batteries

Abstract

Transition metal oxides (TMO) have great potential applications in efficient energy storage devices for their commercial possibilities in lithium-ion batteries (LIBs).

New insights into the outstanding performances of nickel‐doped manganese oxide nanoparticles embedded in a 3D carbon nanopipes framework as anode for lithium and sodium‐ion batteries

“…From the second cycle onwards, these peaks shifted to 0.92 and 0.21 V due to enhanced kinetics of lithium intercalation and structural modification (Equations and ). In the anodic scan, one clear peak was observed at 1.29 V, a slight shifting to the higher voltage side in comparison to Mn 3 O 4 (x)@CMK‐5. This peak was associated with the oxidation of metallic Mn and Ni to MnO and NiO, respectively, and decomposition of Li 2 O (Equations and ) 21,35,55 . Another weak peak was observed at 2.1 V owing to the re‐oxidation of MnO to Mn 3 O 4 , similar to the process observed for Mn 3 O 4 (x)@CMK‐5.…”

“…This peak was associated with the oxidation of metallic Mn and Ni to MnO and NiO, respectively, and decomposition of Li 2 O (Equations 2 and 4). 21,35,55 Another weak peak was observed at 2.1 V owing to the re-oxidation of MnO to Mn 3 O 4 , similar to the process observed for Mn 3 O 4 (x) @CMK-5. The nearly overlapped CV profiles from 2nd to 10th cycles indicated the superior reversibility of the electrochemical processes and excellent cyclability of Ni(y)-Mn 3 O 4 (1)@CMK-5 electrodes.…”

“…For the CV profiles of Ni(y)‐Mn 3 O 4 (1)@CMK‐5 (Figure 6A), similar cathodic and anodic peaks were observed with slight variation in the peak positions. The cathodic peaks were detected at 0.8 and 0.1 V owing to the generation of SEI and reduction of Ni‐doped Mn 3 O 4 to metallic Ni, metallic Mn, and Li 2 O (Equation ) 24,52,55 . From the second cycle onwards, these peaks shifted to 0.92 and 0.21 V due to enhanced kinetics of lithium intercalation and structural modification (Equations and ). In the anodic scan, one clear peak was observed at 1.29 V, a slight shifting to the higher voltage side in comparison to Mn 3 O 4 (x)@CMK‐5.…”

“…The cathodic peaks were detected at 0.8 and 0.1 V owing to the generation of SEI and reduction of Ni-doped Mn 3 O 4 to metallic Ni, metallic Mn, and Li 2 O (Equation 3). 24,52,55 From the second cycle onwards, these peaks shifted to 0.92 and 0.21 V due to enhanced kinetics of lithium intercalation and structural modification (Equations 3 and 4).…”

Highly reversible Li-ion full batteries using a Mg-doped Li-rich Li1.2Ni0.28Mn0.468Mg0.052O2 cathode and carbon-decorated Mn3O4 anode with hierarchical microsphere structures

“…36,48 Furthermore, the Li + storage properties of the LIBs are highly dependent on the designed shapes of the electrodes, except for the intrinsic properties of the active material. [49][50][51][52][53] To realize the high energy-and power-density of the LIB electrodes, one way is to make high-capacity electrode materials with nanostructures, which can provide high Li + storage kinetics with structural durability. 49 In particular, secondary microsphere (MS) structures composed of primary nanostructures have been demonstrated as an ideal candidate to overcome the major limitations in developing high-performance electrodes, which could increase the charge/discharge capacity, cycle life and rate capability, because they could provide superior kinetic properties and efficient accommodation of structural disintegrations.…”