DataVXAdvanced Functional MaterialsPaper
journal article·2023-04Open access

Large‐Area Smooth Conductive Films Enabled by Scalable Slot‐Die Coating of Ti3C2Tx MXene Aqueous Inks

Tiezhu Guo, Di Zhou, Min Gao, Shungui Deng, Mohammad Jafarpour, Jonathan Avaro, Antonia Neels, Erwin Hack, Jing Wang, Jakob Heier, Chuanfang (John) Zhang

Advanced Functional Materials· Volume 33· Issue 15
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Source abstract

Abstract

Abstract Large‐area flexible transparent conductive electrodes (TCEs) featuring excellent optoelectronic properties (low sheet resistance, Rs, at high transparency, T) are vital for integration in transparent wearable electronics (i.e., antennas, sensors, supercapacitors, etc.). Solution processing (i.e., printing and coating) of conductive inks yields highly uniform TCEs at low cost, holding great promise for commercially manufacturing of transparent electronics. However, to formulate such conductive inks as well as to realize continuous conductive films in the absence of percolation issue are quite challenging. Herein, the scalable slot‐die coating of Ti3C2Tx MXene aqueous inks is reported for the first time to yield large‐area uniform TCEs with outstanding optoelectronic performance, that is, average DC conductivity of 13 000 ± 500 S cm−1. The conductive MXene nanosheets are forced to orientate horizontally as the inks are passing through the moving slot, leading to the rapid manufacturing of highly aligned MXene TCEs without notorious percolation problems. Moreover, through tuning the ink formulations, such conductive MXene films can be easily adjusted from transparent to opaque as required, demonstrating very low surface roughness and even mirror effects. These high‐quality, slot‐die‐coated MXene TCEs also demonstrate excellent electrochemical charge storage properties when assembled into supercapacitors.
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Research context

Energy storageNanomaterialsElectronic materials

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Nanomaterials and Printing Technologies · MXene and MAX Phase Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Materials Science & Engineering Sichuan University Chengdu Sichuan 610065 China

Laboratory for Functional Polymers Empa Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129 CH‐8600 Dübendorf Switzerland

Key Laboratory of Multifunctional Materials and Structures Ministry of Education, School of Electronic Science and Engineering Xi'an Jiaotong University Xi'an Shaanxi 710049 China

Institute of Environmental Engineering ETH Zürich 8093 Zürich Switzerland

Laboratory for Advanced Analytical Technologies Empa Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129 8600 Dübendorf Switzerland

Institute of Materials Science and Engineering Ecole Polytechnique Federale de Lausanne (EPFL) Station 12 CH‐1015 Lausanne Switzerland

Center for X‐ray Analytics Empa Swiss Federal Laboratories for Materials Science and Technology Lerchenfeldstrasse 5 CH‐9014 St. Gallen Switzerland

Biomimetic Membranes and Textile Empa Swiss Federal Laboratories for Materials Science and Technology Lerchenfeldstrasse 5 CH‐9014 St. Gallen Switzerland

Department of Chemistry University of Fribourg Chemin du Musée 9 CH‐1700 Fribourg Switzerland

Center for X‐ray Analytics Empa Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129 CH‐8600 Dübendorf Switzerland

Transport at Nanoscale Interfaces Empa Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129 CH‐8600 Dübendorf Switzerland

Funding

China Scholarship Council · Fundamental Research Funds for the Central Universities

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