Journal article
Porous heterostructured MXene/carbon nanotube composite paper with high volumetric capacity for sodium-based energy storage devices
Nano energy, v 26, pp 513-523
Aug 2016
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The global availability of sodium and a possibility to avoid the use of copper current collectors make electrochemical sodium-ion storage attractive for battery and metal-ion capacitor applications. However, the use of Na instead of Li ions requires different electrode materials that can accommodate larger Na ions and still provide high charging rate and high volumetric capacity. Herein we report on the fabrication of porous Ti3C2 MXene/CNT composite paper electrodes for sodium-based energy storage devices. The heterostructure formation was realized by electrostatic attraction between negatively charged 2D MXene nanosheets and positively charged 1D CNTs. This method efficiently prevented restacking of MXene nanosheets and produced a well-defined porous structure, thereby facilitating electrolyte transport and access of ions to the electrode and producing functional MXene-based electrodes for sodium-ion storage. When applied as freestanding electrodes for sodium-ion storage, the built-to-order Ti3C2 MXene/CNTs porous films showed high volumetric capacity of 421mAhcm−3 at 20mAg−1, good rate performances, and excellent cycling stability. Prototype sodium-ion cells were also assembled using the as-prepared Ti3C2/CNTs anode and Na0.44MnO2 cathode. The fabrication of porous MXene/CNT composites, using simple self-assembly, opens the door to developing electrode materials with high volumetric capacity for sodium-ion storage.
Porous MXene/CNT films were prepared by a self-assembly approach. When applied as a freestanding electrode for storage of sodium-ions, the porous MXene/CNT paper exhibited a high volumetric capacity, good rate performance, and excellent cycling stability.
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•Porous Ti3C2 MXene/CNT composite films were prepared.•The Ti3C2 MXene/CNTs porous films showed superior performances for Na-ion storage.•Prototype Na0.44MnO2//Ti3C2/CNTs Na-ion full cells were assembled.•The general validity of the approach to prepare porous MXene/CNT was also demonstrated on Mo2CTx.
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Details
- Title
- Porous heterostructured MXene/carbon nanotube composite paper with high volumetric capacity for sodium-based energy storage devices
- Creators
- Xiuqiang Xie - A.J. Drexel Nanomaterials Institute, and Materials Science and Engineering Department, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USAMeng-Qiang Zhao - A.J. Drexel Nanomaterials Institute, and Materials Science and Engineering Department, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USABabak Anasori - A.J. Drexel Nanomaterials Institute, and Materials Science and Engineering Department, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USAKathleen Maleski - A.J. Drexel Nanomaterials Institute, and Materials Science and Engineering Department, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USAChang E Ren - A.J. Drexel Nanomaterials Institute, and Materials Science and Engineering Department, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USAJingwen Li - A.J. Drexel Nanomaterials Institute, and Materials Science and Engineering Department, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USABryan W Byles - A.J. Drexel Nanomaterials Institute, and Materials Science and Engineering Department, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USAEkaterina Pomerantseva - A.J. Drexel Nanomaterials Institute, and Materials Science and Engineering Department, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USAGuoxiu Wang - Centre for Clean Energy Technology, School of Mathematical and Physical Sciences, University of Technology Sydney, Broadway, Sydney, NSW 2007, AustraliaYury Gogotsi - A.J. Drexel Nanomaterials Institute, and Materials Science and Engineering Department, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA
- Publication Details
- Nano energy, v 26, pp 513-523
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000384908700060
- Scopus ID
- 2-s2.0-84975519466
- Other Identifier
- 991014969750704721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied