CuO/C microspheres as anode materials for lithium ion batteries

Preparation and characterization of basic carbonates as novel anode materials for lithium-ion batteries

“…(11). The extra capacity can be attributed to the formation of SEI film during the first discharge process and the probable lithium storage on interface [27][28][29][30]. The cyclic performance curve of CuCO 3 Á Cu(OH) 2 exhibits a decrease in the discharge capacity from 1356.2 to 14.6 mAh g À 1 after 20 cycles, indicating a poor cyclic performance.…”

Electrochemical Properties of Yolk–Shell‐Structured CuO–Fe2O3 Powders with Various Cu/Fe Molar Ratios Prepared by One‐Pot Spray Pyrolysis

“…[28][29][30][31][32] The plateau observed near 0.8 V was also attributed to the decomposition of CuFe 2 O 4 into Cu and Fe nanoparticles dispersed in an amorphous matrix of Li 2 O and to the formation of a solid electrolyte interphase (SEI). [11][12][13][14][15][16] Figure 3 b shows clear reduction and oxidation peaks at 1.2 and 2.5 V, respectively, for Cu-rich compositions (Cu/Fe = 3:1, 2:1), as a result of the CuO components of these materials.…”

“…[ [30][31][32] Yolk-shell CuOFe 2 O 3 materials produced with Fe-rich compositions (Cu/Fe = 1:3, 1:2) showed a long plateau near 0.8 V in the initial discharge curves and distinct reduction peaks near 0.7 V in the initial CV curves. The long plateau seen near 0.8 V was mainly attributed to the conversion of CuFe 2 O 4 and Fe 2 O 3 to Li 2 O, Cu, and Fe.…”

“…The structural stability of the yolk-shell powders over numerous lithium ion insertion and extraction cycles and their unique structure, which is composed of a porous core and shell and ensures the facile diffusion of Liions by providing a short diffusion length and a void space between the core for the easy penetration of the electrolyte, improved the cycling and rate performances as compared to that of the high-density powder analogues. [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] …”

Construction of carbon nanoflakes shell on CuO nanowires core as enhanced core/shell arrays anode of lithium ion batteries

“…However, its practical application for LIBs is still hampered by two main issues: poor reaction kinetics and significant capacity fading at long-term electrochemical cycling [11,12]. The above problems are mainly due to the low electrical conductivity of CuO and its severe mechanical degradation and pulverization arising from the large volume change during the cycling [13,14]. Currently, there are two typical approaches developed to circumvent these intractable problems.…”