Preparation of few-layer reduced graphene oxide-wrapped mesoporous Li4Ti5O12 spheres and its application as an anode material for lithium-ion batteries |
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| Authors: | Jun Peng Yong-Tao Zuo Gang Li Gang Wang |
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| Institution: | a School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China;
b Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Production and Construction Corps, Shihezi 832003, China;
c Key Laboratory of Materials-Oriented Chemical Engineering of Xinjiang Uygur Autonomous Region, Shihezi 832003, China |
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| Abstract: | A three-dimensional few-layer reduced graphene oxide-wrapped mesoporous Li4Ti5O12 (m-LTO@FLRGO) electrode is produced using a simple solution fabrication process. When tested as an anode for Liion batteries, the m-LTO@FL-RGO composite exhibits excellent rate capability and superior cycle life. The capacity of m-LTO@FL-RGO reaches 165.4 mA h g-1 after 100 cycles between 1 and 2.5 V at a rate of 1 C. Even at a rate of 30 C, a high discharge capacity of 115.1 mA h g-1 is still obtained, which is three times higher than the pristine mesoporous Li4Ti5O12 (m-LTO). The graphene nanosheets are incorporated into the m-LTO microspheres homogenously, which provide a high conductive network for electron transportation. |
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| Keywords: | Lithium titanate Graphene Mesoporous spheres Anode Lithium-ion batteries |
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