Synthesis of Li2Fe0.9Mn0.1SiO4/C composites using glucose as carbon source |
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Authors: | Chun-li Peng Jia-feng Zhang Xuan Cao and Bao Zhang |
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Affiliation: | School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China |
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Abstract: | Li2Fe0.9Mn0.1SiO4/C composites were synthesized by using glucose as carbon source. The samples were characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM) and electrochemical measurements. All Li2Fe0.9Mn0.1SiO4/C composites are of the similar crystal structure. With increasing the carbon content in the range of 5%-20% (mass fraction), the diffraction peaks in XRD patterns broaden and the particle sizes and the tap density of samples decrease. The Li2Fe0.9Mn0.1SiO4/C composites with carbon content of 14.12% show excellent the capacity retention remains 92.2% after 30 cycles. |
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Keywords: | lithium ion batteries cathode lithium iron orthosilicate carbon coating |
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