Iron oxide/graphene composites as negative-electrode materials for lithium ion batteries - optimum particle size for stable performanceElectronic supplementary information (ESI) available. See DOI: 10.1039/c5ra19852f

We synthesized Fe 2 O 3 /graphene composites by a hydrothermal method. The effect of varying the pH in the range pH = 8-12 on the properties of the composites and their performance as negative-electrode materials in lithium ion batteries was investigated. The particle size increased with increasing...

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Main Authors: Sun, Qian, Liu, Xiang, Djuriši, Aleksandra B, Leung, Tik Lun, Xie, Maohai, Ng, Alan M. C, Li, Hang Kong, Deng, Zhaofeng, Shih, Kaimin
Format: Article
Language:English
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Summary:We synthesized Fe 2 O 3 /graphene composites by a hydrothermal method. The effect of varying the pH in the range pH = 8-12 on the properties of the composites and their performance as negative-electrode materials in lithium ion batteries was investigated. The particle size increased with increasing pH. The best battery performance was obtained for composites prepared at pH = 10 (specific capacity exceeding 800 mA h g −1 after 60 cycles) due to superior preservation of the electrode morphology compared to samples prepared at lower or higher pH values. We synthesized Fe 2 O 3 /graphene composites by a hydrothermal method.
ISSN:2046-2069
DOI:10.1039/c5ra19852f