Journal article
Low-Temperature pseudocapacitive energy storage in Ti3C2Tx MXene
Energy Storage Materials, v 33, pp 382-389
Dec 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The use of pseudocapacitive electrode materials can enable devices to store more energy than electrical double-layer capacitors (EDLCs). However, only a few pseudocapacitive materials can maintain excellent performance at low temperatures, which limits their application in harsh climate conditions. Here we demonstrate that a pseudocapacitor with two-dimensional transition metal carbide (MXene) electrode can exhibit excellent low-temperature performance like EDLC. The MXene electrodes contain electrolyte between 2D sheets, and the electrolyte ions can unimpededly reach redox-active sites and interact with surface oxygen groups rapidly, even at low temperatures. With a combination of 40 wt.% sulfuric acid solution as the electrolyte, the working temperature of the MXene electrode extends to -60 °C. The electrode exhibits temperature-insensitive performance at a low scan rate, and the capacity of MXene (88 mAh g−1 at 5 mV s−1) stays almost constant when the temperature decreases from 20 to -50 °C. Moreover, at -50 °C, MXene electrodes show a high capacity retention of > 75% at 100 mV s−1, indicating good low-temperature rate performance. Interestingly, a broad working potential window of 1.5 V is achieved at -60 °C. Such an excellent low-temperature performance demonstrates that MXene is a promising electrode candidate for low-temperature pseudocapacitive energy storage applications.
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Details
- Title
- Low-Temperature pseudocapacitive energy storage in Ti3C2Tx MXene
- Creators
- Jiang Xu - Institute of Intelligent Flexible Mechatronics, Jiangsu University, Zhenjiang, 212013, ChinaXinghao Hu - Institute of Intelligent Flexible Mechatronics, Jiangsu University, Zhenjiang, 212013, ChinaXuehang Wang - Department of Materials Science and Engineering, and A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA, 19104, USAXi Wang - Changzhou UniversityYifan Ju - Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou, 213164, ChinaShanhai Ge - Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, Pennsylvania, 16802, USAXiaolong Lu - Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou, 213164, ChinaJianning Ding - Institute of Intelligent Flexible Mechatronics, Jiangsu University, Zhenjiang, 212013, ChinaNingyi Yuan - Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou, 213164, ChinaYury Gogotsi - Department of Materials Science and Engineering, and A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA, 19104, USA
- Publication Details
- Energy Storage Materials, v 33, pp 382-389
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Creative Arts Therapies; Materials Science and Engineering; A.J. Drexel Nanomaterials Institute
- Web of Science ID
- WOS:000599505100004
- Scopus ID
- 2-s2.0-85090271135
- Other Identifier
- 991014969884404721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology