Flexible free-standing graphene–TiO2 hybrid paper for use as lithium ion battery anode materials |
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| Affiliation: | 1. Key Laboratory for Anisotropy and Texture of Materials of Ministry of Education, Northeastern University, Shenyang, Liaoning 110004, China;2. Department of Mechanical, Aerospace & Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA;1. School of Materials Science and Engineering, Beihang University, Beijing 100191, PR China;2. School of Physics Science and Nuclear Energy Engineering, Beihang University, Beijing 100191, PR China |
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| Abstract: | Flexible and binder-free graphene–TiO2 paper was prepared by a simple route. A unique 3-D nano-structure was achieved with nano-sized TiO2 intercalated between graphene layers as pillars, significantly increasing the Li-ion insertion/extraction rate. At a current rate of 2 Ag?1, the specific capacity can reach 122 mAhg?1 after 100 charge/discharge cycles. More remarkably, the flexible graphene/TiO2 hybrid paper shows an excellent stability when the rates decrease from 4 Ag?1 back to 200 mAg?1 with the retained capacity of 175 mAhg?1. |
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