Large-Area Smooth Conductive Films Enabled by Scalable Slot-Die Coating of Ti_3C_2T_x MXene Aqueous Inks

Tiezhu Guo; Di Zhou; Min GaoShungui DengMohammad JafarpourJonathan AvaroAntonia NeelsErwin HackJing WangJakob HeierChuanfang (John) Zhang

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Large-Area Smooth Conductive Films Enabled by Scalable Slot-Die Coating of Ti_3C_2T_x MXene Aqueous Inks

机译：Large-Area Smooth Conductive Films Enabled by Scalable Slot-Die Coating of Ti_3C_2T_x MXene Aqueous Inks

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Large-area flexible transparent conductive electrodes (TCEs) featuring excellentoptoelectronic properties (low sheet resistance, R_s, 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 greatpromise for commercially manufacturing of transparent electronics. However,to formulate such conductive inks as well as to realize continuous conductivefilms in the absence of percolation issue are quite challenging. Herein, thescalable slot-die coating of Ti_3C_2T_x MXene aqueous inks is reported for thefirst time to yield large-area uniform TCEs with outstanding optoelectronicperformance, that is, average DC conductivity of 13 000 ± 500 S cm~(?1). Theconductive Mxene nanosheets are forced to orientate horizontally as the inksare passing through the moving slot, leading to the rapid manufacturing ofhighly aligned Mxene TCEs without notorious percolation problems. Moreover,through tuning the ink formulations, such conductive Mxene films canbe easily adjusted from transparent to opaque as required, demonstratingvery low surface roughness and even mirror effects. These high-quality, slotdie-coated MXene TCEs also demonstrate excellent electrochemical chargestorage properties when assembled into supercapacitors.

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《Advanced functional materials》 |2023年第15期|2213183.1-2213183.13|共13页
作者
Tiezhu Guo; Di Zhou; Min GaoShungui DengMohammad JafarpourJonathan AvaroAntonia NeelsErwin HackJing WangJakob HeierChuanfang (John) Zhang;
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作者单位

College of Materials Science & EngineeringSichuan UniversityChengdu, Sichuan 610065, China, Laboratory for Functional PolymersEmpaSwiss Federal Laboratories for Materials Science and TechnologyUEberlandstrasse 129, CH-8600 Duebendorf, Switzerland, Key Lab;

Key Laboratory of Multifunctional Materials and StructuresMinistry of Education, School of Electronic Science and EngineeringXi’an Jiaotong UniversityXi’an, Shaanxi 710049, China;

Institute of Environmental EngineeringETH Zuerich8093 Zuerich, Switzerland, Laboratory for Advanced Analytical TechnologiesEmpaSwiss Federal Laboratories for Materials Science and TechnologyUEberlandstrasse 129, 8600 Duebendorf, SwitzerlandLaboratory for Functional PolymersEmpaSwiss Federal Laboratories for Materials Science and TechnologyUEberlandstrasse 129, CH-8600 Duebendorf, Switzerland, Institute of Materials Science and EngineeringEcole Polytechnique Federale de Lausanne (EPFL)StatioCenter for X-ray AnalyticsEmpaSwiss Federal Laboratories for Materials Science and TechnologyLerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland, Biomimetic Membranes and TextileEmpaSwiss Federal Laboratories for Materials Science and TechnologyLerchenfDepartment of ChemistryUniversity of FribourgChemin du Musee 9, CH-1700 Fribourg, Switzerland, Center for X-ray AnalyticsEmpaSwiss Federal Laboratories for Materials Science and TechnologyUEberlandstrasse 129, CH-8600 Duebendorf, SwitzerlandTransport at Nanoscale InterfacesEmpaSwiss Federal Laboratories for Materials Science and TechnologyUEberlandstrasse 129, CH-8600 Duebendorf, SwitzerlandLaboratory for Functional PolymersEmpaSwiss Federal Laboratories for Materials Science and TechnologyUEberlandstrasse 129, CH-8600 Duebendorf, SwitzerlandCollege of Materials Science & EngineeringSichuan UniversityChengdu, Sichuan 610065, China;

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MXenes; percolation; slot-die coating; transparent conductive electrodes;

Large-Area Smooth Conductive Films Enabled by Scalable Slot-Die Coating of Ti_3C_2T_x MXene Aqueous Inks

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