Versatile N-Doped MXene Ink for Printed Electrochemical Energy Storage Application
Type
ArticleKAUST Department
Physical Science and Engineering (PSE) DivisionDate
2019-07-30Embargo End Date
2020-01-01Permanent link to this record
http://hdl.handle.net/10754/656761
Metadata
Show full item recordAbstract
Printing is regarded as a revolutionary and feasible technique to guide the fabrication of versatile functional systems with designed architectures. 2D MXenes are nowadays attractive in printed energy storage devices. However, owing to the van der Waals interaction between the MXene layers, the restacking issues within the printed electrodes can significantly impede the ion/electrolyte transport and hence handicap the electrochemical performances. Herein, a melamine formaldehyde templating method is demonstrated to develop crumpled nitrogen-doped MXene (MXene-N) nanosheets. The nitrogen doping boosts the electrochemical performances of MXene via enhanced conductivity and redox activity. Accordingly, two types of MXene-N inks are prepared throughout the optimization of the ink viscosity to fit the 2D screen printing and 3D extrusion printing, respectively. As a result, the screen printed MXene-N microsupercapacitor delivers an areal capacitance of 70.1 mF cm−2 and outstanding mechanical robustness. Furthermore, the 3D-printed MXene-N based supercapacitor manifests an areal capacitance of 8.2 F cm−2 for a three-layered electrode and readily stores a high areal energy density of 0.42 mWh cm−2. The approach to harnessing such versatile MXene-N inks offers distinctive insights into the printed energy storage systems with high areal energy density and large scalability.Citation
Yu, L., Fan, Z., Shao, Y., Tian, Z., Sun, J., & Liu, Z. (2019). Versatile N-Doped MXene Ink for Printed Electrochemical Energy Storage Application. Advanced Energy Materials, 9(34), 1901839. doi:10.1002/aenm.201901839Sponsors
L.H.Y. and Z.D.F. contributed equally to this work. This work was supported by the National Natural Science Foundation of China (51702225), National Key Research and Development Program (2016YFA0200103), and Jiangsu Youth Science Foundation (BK20170336). The authors acknowledge the support from Suzhou Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Suzhou, China.Publisher
WileyJournal
Advanced Energy MaterialsAdditional Links
https://onlinelibrary.wiley.com/doi/abs/10.1002/aenm.201901839ae974a485f413a2113503eed53cd6c53
10.1002/aenm.201901839