Nanoporous iron oxide@carbon composites with low carbon content as high-performance anodes for lithium-ion batteries

Abstract

Nanoporous Fe2O3@C nanoparticles with low carbon content as high performance anodes for lithium-ion batteries.

Oxygen deficient perovskites: effect of structure on electrical conductivity, magnetism and electrocatalytic activity.

“…Thus, the peak at around 0.95 V for the first cycle may be attributed to the crystal structure destruction. 226,258,262 The other reduction peak at around 0.3V for the first cycle and at around 1 V for other remaining cycles could be attributed to electrochemical reaction. 261,263 In the oxidation process, the CV curves reveal the shifting of the anodic peak from right to left as the cycle number increases.…”

“…The voltage profile observed was similar to previous report of Fe2O3 253 with a long flat plateau at around 0.9 V during discharging. A peak observed between 0.8 V to 1.2 V in CV is indication for nonreversible formation of solid/electrolyte interphase (SEI) on the surface of the electrode [257][258] which led to irreversible capacity loss. [254][255] A cathodic peaks in the first cycle is observed in CV at around 0.95 V. This peak is masked by the lines of other CVs.…”

“…254 The cathodic and anodic peaks can shift left or right for different cycles. 254,[258][259][260][261] The peak at around 0.3 V for the first cycle can be a peak shifted left from those of the other cycles. Thus, the peak at around 0.95 V for the first cycle may be attributed to the crystal structure destruction.…”