Simple fabrication of a Fe2O3/carbon composite for use in a high-performance lithium ion battery |
| |
| Affiliation: | 1. State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China;2. School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, NSW 2522, Australia;3. School of Advanced Manufacturing & Mechanical Engineering, University of South Australia, SA 5095, Australia;1. Mineral Industries Research Centre (MIRC), Shahid Bahonar University of Kerman, P.O. Box 76135-133, Kerman, Iran;2. Energy and Environmental Engineering Research Center (EERC), Shahid Bahonar University of Kerman, Kerman, Iran;3. Department of Chemical Engineering, Shahid Bahonar University of Kerman, Kerman, Iran;4. Department of Mining Engineering, Shahid Bahonar University of Kerman, Kerman, Iran;1. School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, PR China;2. Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou 510006, PR China;3. School of Chemistry and Chemistry Engineering, Guangxi Normal University, Guilin 541004, PR China;1. Center of Nanomaterials for Renewable Energy (CNRE), State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi''an Jiaotong University, Xi''an, PR China;2. Department of Applied Physics, Northwestern Polytechnical University, Xi''an, PR China;3. Department of Applied Chemistry, Northwestern Polytechnical University, Xi''an, PR China;1. School of Materials Science and Engineering, Northeastern University, Shenyang 110819, PR China;2. School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, PR China;3. School of Metallurgy, Northeastern University, Shenyang 110819, PR China;4. Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, Qinhuangdao, PR China |
| |
| Abstract: | A simple approach was developed for the fabrication of a Fe2O3/carbon composite by impregnating activated carbon with a ferric nitrate solution and calcinating it. The composite contains graphitic layers and 10 wt.% Fe2O3 particles of 20–50 nm in diameter. The composite has a high specific surface area of ～828 m2 g?1 and when used as the anode in a lithium ion battery (LIB), it showed a reversible capacity of 623 mAh g?1 for the first 100 cycles at 50 mA g?1. A discharge capacity higher than 450 mAh g?1 at 1000 mA g?1 was recorded in rate performance testing. This highly improved reversible capacity and rate performance is attributed to the combination of (i) the formation of graphitic layers in the composite, which possibly improves the matrix electrical conductivity, (ii) the interconnected porous channels whose diameters ranges from the macro- to meso- pore, which increases lithium-ion mobility, and (iii) the Fe2O3 nanoparticles that facilitate the transport of electrons and shorten the distance for Li+ diffusion. This study provides a cost-effective, highly efficient means to fabricate materials which combine conducting carbon with nanoparticles of metal or metal oxide for the development of a high-performance LIB. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
