Reduced graphene oxide/tin oxide composite as an enhanced anode material for lithium ion batteries prepared by homogenous coprecipitation |
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Authors: | Xianjun Zhu Yanwu ZhuShanthi Murali Meryl D StollerRodney S Ruoff |
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Affiliation: | a College of Chemistry, Central China Normal University, 152 Luoyu Rd, Wuhan, Hubei 430079, China b Department of Mechanical Engineering and the Texas Materials Institute, The University of Texas at Austin, One University Station C2200, Austin, TX 78712, USA |
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Abstract: | Reduced graphene oxide/tin oxide composite is prepared by homogenous coprecipitation. Characterizations show that tin oxide particles are anchored uniformly on the surface of reduced graphene oxide platelets. As an anode material for Li ion batteries, it has 2140 mAh g−1 and 1080 mAh g−1 capacities for the first discharge and charge, respectively, which is more than the theoretical capacity of tin oxide, and has good capacity retention with a capacity of 649 mAh g−1 after 30 cycles. The simple synthesis method can be readily adapted to prepare other composites containing reduced graphene oxide as a conducting additive that, in addition to supporting metal oxide nanoparticles, can also provide additional Li binding sites to, perhaps, further enhance capacity. |
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Keywords: | Reduced graphene oxide Tin oxide Homogeneous coprecipitation Lithium ion battery Anode |
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