Flexible graphene-based lithium ion batteries with ultrafast charge and discharge rates
- 8 October 2012
- journal article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 109 (43), 17360-17365
- https://doi.org/10.1073/pnas.1210072109
Abstract
There is growing interest in thin, lightweight, and flexible energy storage devices to meet the special needs for next-generation, high-performance, flexible electronics. Here we report a thin, lightweight, and flexible lithium ion battery made from graphene foam, a three-dimensional, flexible, and conductive interconnected network, as a current collector, loaded with Li(4)Ti(5)O(12) and LiFePO(4), for use as anode and cathode, respectively. No metal current collectors, conducting additives, or binders are used. The excellent electrical conductivity and pore structure of the hybrid electrodes enable rapid electron and ion transport. For example, the Li(4)Ti(5)O(12)/graphene foam electrode shows a high rate up to 200 C, equivalent to a full discharge in 18 s. Using them, we demonstrate a thin, lightweight, and flexible full lithium ion battery with a high-rate performance and energy density that can be repeatedly bent to a radius of 5 mm without structural failure and performance loss.Keywords
This publication has 34 references indexed in Scilit:
- Three-dimensional flexible and conductive interconnected graphene networks grown by chemical vapour depositionNature Materials, 2011
- Three-dimensional bicontinuous ultrafast-charge and -discharge bulk battery electrodesNature Nanotechnology, 2011
- An Advanced Lithium Ion Battery Based on High Performance Electrode MaterialsJournal of the American Chemical Society, 2011
- Fabricating Genetically Engineered High-Power Lithium-Ion Batteries Using Multiple Virus GenesScience, 2009
- Battery materials for ultrafast charging and dischargingNature, 2009
- Aqueous Lithium‐ion Battery LiTi2(PO4)3/LiMn2O4 with High Power and Energy Densities as well as Superior Cycling Stability**Advanced Functional Materials, 2007
- Flexible energy storage devices based on nanocomposite paperProceedings of the National Academy of Sciences, 2007
- Photonic Crystal Structures as a Basis for a Three‐Dimensionally Interpenetrating Electrochemical‐Cell SystemAdvanced Materials, 2006
- Nanostructured materials for advanced energy conversion and storage devicesNature Materials, 2005
- A High-Performance Supercapacitor/Battery Hybrid Incorporating Templated Mesoporous ElectrodesJournal of the Electrochemical Society, 2003