Preparation and characterization of carbon xerogel (CX) and CX–SiO composite as anode material for lithium-ion battery |
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| Institution: | 1. Department of Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China;2. School of Materials and Environment Sciences, Qingdao University of Science and Technology, Qingdao 266042, China;1. Institute of Electrochemical and Energy Technology, Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2. School of Chemical Engineering, Shandong University of Technology, Zibo 255049, China;3. Department of Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China;1. Institute of Electrochemical & Energy Technology, Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China;2. National Engineering Research Center for Nanotechnology, 28 East Jiangchuan Road, Shanghai 200241, PR China;3. Center for Energy Research, University of California, San Diego, La Jolla, CA 92093-0417, USA;1. School of Materials Science and Engineering, Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China;2. School of Materials Science and Engineering, Chang’an University, Xi’an 710064, China;3. Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;1. Institute of Electrochemical & Energy Technology, Department of Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China;2. National Engineering Research Center for Nanotechnology, 28 East Jiangchuan Road, Shanghai 200241, PR China;3. Department of Environment Engineering, Nanjing Institute of Technology, Nanjing 211167, Jiangsu, PR China;4. College of Engineering and Computing, University of South Carolina, 301 Main Street, Columbia, SC 29201, USA;1. College of Materials and Chemical Engineering, China Three Gorges University, 8 Daxue Road, Yichang, Hubei 443002, China;2. Collaborative Innovation Center for Microgrid of New Energy, Hubei, China;1. Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2. Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academic of Science, Shanghai 201204, China;3. State Key Laboratory of Physical Chemistry of Solid Surface & Department of Chemistry, Xiamen University, Xiamen 361005, China;4. Shanghai Keyuan Chemical & Gas Engineering Design Co., Ltd., Shanghai 200235, China;5. Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, Shandong 250022, China |
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| Abstract: | Carbon xerogel (CX), a kind of novel carbon material with low-density and continuous nano-porous structure that can be controlled and tailored on nanometer scale, has been prepared through the sol–gel polycondensation of resorcinol (R) with formaldehyde (F) followed by drying at ambient pressure and carbonization in inert atmosphere, and CX–SiO composite has been synthesized by high energy mechanical ball-milling of the obtained CX and commercial SiO at room temperature and atmosphere. The characteristics of CX and CX–SiO as anode material for lithium-ion battery have been systematically investigated on basis of field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), electrochemical and charge–discharge tests. The results showed that, CX–SiO is composed of active carbon, graphite, SiO and dispersed Si crystal while CX consists of active carbon and graphite, CX–SiO has smaller and much more uniform particles than CX. SiO can greatly improve discharge capacity of CX with an acceptable sacrifice of cycling stability, and the charge–discharge capacity of CX–SiO comes mainly from lithium insertion–extraction in Si–SiO in the sample. |
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