Versatile N-Doped MXene Ink for Printed Electrochemical Energy Storage Application

Lianghao Yu, Zhaodi Fan, Yuanlong Shao, Zhengnan Tian, Jingyu Sun, Zhongfan Liu

Research output: Contribution to journalArticlepeer-review

282 Scopus citations


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.
Original languageEnglish (US)
Pages (from-to)1901839
JournalAdvanced Energy Materials
Issue number34
StatePublished - Jul 30 2019

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: 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.


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