N-doped honeycomb-like carbon networks loaded with ultra-fine Fe2O3 nanoparticles for lithium-ion batteries
[url=https://www.wyactivatedcarbon.com/products/other-activated-carbon/honeycomb-activated-carbon.html]honeycomb carbon[/url]N-doped honeycomb-like carbon networks (N–HCN) loaded with ultra-fine Fe2O3 nanoparticles (Fe2O3/N–HCN) are proposed as anode materials for lithium-ion batteries (LIBs). The Fe2O3/N–HCN nanocomposites are prepared by freeze-drying of glucose-Fe(NO3)3 solution, following by grinding it with urea, and finally annealing treatment. The N–HCN with dozen micrometer-sized macropores is composed of carbon nanosheets with a thickness of about 33 nm. A large number of 2–7 nm-sized ultra-fine Fe2O3 nanoparticles with an average size of 4.4 nm are uniformly arrayed on the wall of N–HCN. The Fe2O3/N–HCN nanocomposites exhibit good performances as anode materials for LIBs. After 500 cycles under a large current density of 5 A g−1, the Fe2O3/N–HCN nanocomposites still show a reversible capacity of 408 mAh g−1. The good performance can be ascribed to the uniformly dispersed ultra-fine Fe2O3 nanoparticles and unique honeycomb-like structure of N–HCN which provides a continuous conductive network to greatly promote the rapid transfer of ions and electrons, and effectively alleviate the volume fluctuation effect of Fe2O3 during charging and discharging. [url=https://www.wyactivatedcarbon.com/]chengde wanyang activated carbon factory[/url]More importantly, the cheap and environmentally friendly glucose as raw materials provides possibility for green energy applications.
Last edited by
jun sakura on
01 January, 1970 05:30 AM