Hollow porous carbon spheres doped with a low content of Co3O4 as anode materials for high performance lithium-ion batteries

Co3O4 Hollow Nanoparticles Embedded in Mesoporous Walls of Carbon Nanoboxes for Efficient Lithium Storage

“…In the first cathodic scan, a broad peak at 0.64 V can be attributed to the irreversible electrochemical reduction reactions between Co 3 O 4 and Li + , and the formation of Li 2 O and solid electrolyte interphase (SEI) [37–39] . An obvious anodic peak at about 2.09 V can be assigned to the oxidation of Co NPs accompanying the decomposition of Li 2 O [10, 40] . In the subsequent cycles, the main cathodic peaks shift to 1.33 and 0.95 V, corresponding to the reduction of Co 3+ to Co 2+ and Co 2+ to metallic Co, respectively, [11] suggesting the two‐step reduction reactions of Co 3 O 4 with Li + , while the anodic peaks show negligible change.…”

“…[37][38][39] An obvious anodic peak at about 2.09 V can be assigned to the oxidation of Co NPs accompanying the decomposition of Li 2 O. [10,40] In the subsequent cycles, the main cathodic peaks shift to 1.33 and 0.95 V, corresponding to the reduction of Co 3+ to Co 2+ and Co 2+ to metallic Co, respectively, [11] suggesting the two-step reduction reactions of Co 3 O 4 with Li + , while the anodic peaks show negligible change. The nearly identical peak intensities and integral areas reveal the good reversibility of Li + insertion and extraction reactions.…”

Unique Double Carbon Protection Structured Co<sub>3</sub>O<sub>4</sub> Anode for Lithium Ion Battery

“…Some reported Co 3 O 4 -based nanostructures in the last two years are listed in Table 1. By contrast, the cycling performance of Carbon aerogel (CA)/Co 3 O 4 /Carbon (C) is higher than those of Co 3 O 4 nanocage/Co 3 O 4 nanoframework/TiO 2 [12], Co 3 O 4 nanocubes [13], Hollow Co-Co 3 O 4 /CNTs [14], Co 3 O 4 /nitrogen-doped carbon composite [15] and Co 3 O 4 nanocomposite [19]. But, it is admirable that Co 3 O 4 /nitrogen-doped carbon composite in reference [16], Co/Co 3 O 4 nanoparticles in reference [17] and porous Mn-Co 3 O 4 /C microspheresin reference [18] show super cyclability and rate capability.…”

Nitrogen-Doped Porous Co3O4/Graphene Nanocomposite for Advanced Lithium-Ion Batteries

“…Therefore, the electrochemical reaction of lithium-ions with Co 3 O 4 is irreversible during the first cycle. During the second scan, two cathodic peaks at around 0.84 and 1.36 V can be observed, which corresponds to the decomposition process of SEI film and the reduction of CoO [46]. Compared to the peaks of the first scan, the anodic peaks at 1.30 and 2.20 V exhibit little change, suggesting a good reversibility during the charge/discharge reaction.…”