Fabrication and supercapacitive properties of Fe₂O₃@C nanocomposites

详细信息	查看全文 | 推荐本文 |

• 作者：Peiwen Luo^a ; Jianguo Yu^a ; Zhiqiang Shi^a ; Fengqin Wang^a ; Lang Liu^a ; Hua Huang^a ; Yongnan Zhao^a ; ^{zhaoyn@263.net} ; Huiqi Wang^a ; Guodong Li^b ; Yongcun Zou^b
• 关键词：Fe2O3 ; Nanocomposites ; Carbon materials ; Supercapacitors
• 刊名：Materials Letters
• 出版年：2012
• 期刊代码：59_0167577x
• 类别：ms
• 出版时间：1 August, 2012
• 卷：80
• 期：Complete
• 页码：121-123
• 文件大小：478 K

摘要

Fe₂O₃@C nanocomposites (denoted as FeC-n, n represents the weight percent of Fe(NO₃)₃路9H₂O in the starting gel) have been fabricated by pyrolyzing Fe(NO₃)₃路9H₂O impregnated starch gels. When the Fe(NO₃)₃路9H₂O content was below 50 wt.%, the products contained well dispersive and uniform 纬-Fe₂O₃ nanoparticles that embedded in the carbon matrix. The particle sizes were positively related to the content of Fe(NO₃)₃路9H₂O. The nanocomposites FeC-50 that contained 4.25 nm nanoparticles exhibited an enhanced electrochemical performance within the voltage window of 鈭?#xA0;1.3-0.4 V in 6 mol L^鈭?#xA0;1 KOH solutions. The symmetric capacitor of FeC-50 possessed a high specific capacitance (SC) of 267.2 F g^鈭?#xA0;1 at 0.35 A g^鈭?#xA0;1 with a high voltage of 1.4 V.