Chromium (III) Oxide Carbon Nanocomposites Lithium-ion Battery Anodes with Enhanced Energy Conversion Performance
作者：Y. Fu, H. Gu, X. Yan, J. Liu, Y. Wang, J. Huang, X. Li, H. Lv, X. Wang, J. Guo, G. Lu, S. Qiu and Z.
關鍵字：Chromium (III) Oxide, Carbon Nanocomposites, Lithium-ion Battery Anodes
論文來源：期刊
具體來源：Chemical Engineering Journal
發表時間：2015年
The chromium(III) oxide (Cr2O3) nanoparticles embedded in the carbon sheets are fabricated by combining a sol–gel approach with an efficient carbonization process using glycine as carbon precursor. These Cr2O3/carbon nanocomposites serving as anode materials for lithium-ion batteries (LIBs) have been tested, exhibiting higher cycling (reversible capacity of 465.5 mA h g?1 after 150 cycles at a current density of 100 mA g?1) and rate performances (the discharge capacities of 448.7, 287.2, and 144.8 mA h g?1 at a current density of 200, 400, and 800 mA g?1, respectively) than pure Cr2O3 (reversible capacity of 71.2 mA h g?1 after 150 cycles at a current density of 100 mA g?1 and the discharge capacities of 174.4, 60.5, 29.5, and 13.6 mA h g?1 at a current density of 100, 200, 400, and 800 mA g?1, respectively) due to the presence of carbon sheets, which efficiently buffer the volume change during the lithiation/delithiation and improve the electrical conductivity between Cr2O3 nanoparticles.The chromium(III) oxide (Cr2O3) nanoparticles embedded in the carbon sheets are fabricated by combining a sol–gel approach with an efficient carbonization process using glycine as carbon precursor. These Cr2O3/carbon nanocomposites serving as anode materials for lithium-ion batteries (LIBs) have been tested, exhibiting higher cycling (reversible capacity of 465.5 mA h g?1 after 150 cycles at a current density of 100 mA g?1) and rate performances (the discharge capacities of 448.7, 287.2, and 144.8 mA h g?1 at a current density of 200, 400, and 800 mA g?1, respectively) than pure Cr2O3 (reversible capacity of 71.2 mA h g?1 after 150 cycles at a current density of 100 mA g?1 and the discharge capacities of 174.4, 60.5, 29.5, and 13.6 mA h g?1 at a current density of 100, 200, 400, and 800 mA g?1, respectively) due to the presence of carbon sheets, which efficiently buffer the volume change during the lithiation/delithiation and improve the electrical conductivity between Cr2O3 nanoparticles.