Effect of gelatin concentration on the synthetize of the LiFePO₄/C composite for lithium ion batteries

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• 作者：Naiqiang Liu^a ; ¹ ; Mengyao Gao^a ; ¹ ; Zhongbo Li^a ; Chengming Li^a ; Weikun Wang^b ; Hao Zhang^b ; Zhongbao Yu^b ; Yaqin Huang^a ; ^{huangyaqin9@sina.com" class="auth_mail}
• 关键词：LiFePO4/C composite ; Gelatin ; Crystal structure ; Morphology
• 刊名：Journal of Alloys and Compounds
• 出版年：25 June, 2014
• 年：2014
• 卷：599
• 期：Complete
• 页码：127-130
• 全文大小：1189 K

文摘

Gelatin is an effective additive of the cathode, which would regulate and control the crystal and morphology of LiFePO₄/C composite for enhancing electrochemical performance of the lithium ion battery. The influence of gelatin concentration on the preparation of LiFePO₄/C composite has been investigated. It is observed by SEM that the shape transformed from sphere-like to rod-like structure with the gelatin concentration increased from 1 wt.% to 5 wt.%; meanwhile, the lattice parameters first showed increase trend and then decrease. The LiFePO₄/C composite obtained with the 2 wt.% gelatin solution shows the lowest polarization and excellent rate performance.