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

By Lianghao Yu, Zhaodi Fan, Yuanlong Shao, Zhengnan Tian, Jingyu Sun, Zhongfan Liu. Advanced Energy Materials, 2019

407 citations recorded by the source corpus.

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.

Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/2c845653d9bf460ae7c0fb0222d1c85a5b09a44a

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In Electronic, Optical and Magnetic Materials

1. Xi Zhu
2. Hang Ling
3. Yanheng Xu
4. Yifan Wang
5. Menglei Hu

In Materials Chemistry

1. Xi Zhu
2. Hang Ling
3. Yanheng Xu
4. Yifan Wang
5. Menglei Hu

Citations in the corpus

• MXenes: focus on optical and electronic properties and corresponding applications (2020, background): “first synthesized fully Cl-terminated Ti3C2Cl2 and Ti2CCl2 MXenes in the ZnCl2 Lewis acidic molten salt [14].”