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Electrically conductive and highly compressible anisotropic MXene-wood sponges for multifunctional and integrated wearable devices

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Journal of Materials Science & Technology 2023年第13期144卷 102-110页

作者： Dekui Song Mei-Jiao Zeng Peng Min Xue-Qin Jia Fu-Lin Gao Zhong-Zhen Yu Xiaofeng Li State Key Laboratory of Organic-Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China Beijing Key Laboratory of Advanced Functional Polymer Composites Beijing University of Chemical TechnologyBeijing 100029China College of Chemistry Beijing Normal UniversityBeijing100875China

Although piezoresistive sensors have wide applications in human motion detection and wearable elec-tronics,it is still a challenge to produce multifunctional and integrated sensors with wide working ranges and linear sensing ***,electrically conductive,highly compressible,and structurally anisotropic MXene-wood(MW)sponges are fabricated by converting balsa wood blocks to compressible wood sponges with extremely low density and highly anisotropic porous structure,followed by deco-rating with conductive MXene *** MW sponge is utilized to assemble a piezoresistive sensor with a large working range of 0-25 kPa,wide linear sensing ranges of 5%-50%and 0-180°,and excellent long-term reliability under a bending angle of 30°for 5000 ***,the sensor is suitable for monitoring practical human physiological signals including pulse beating,and finger and wrist *** all-MW sponge-based multifunctional and integrated sensing system is constructed by integrating the MW sponge piezoresistive sensor,the MW sponge-based solid-state supercapacitor,and the MW sponge electrophysiological *** sensing system can concurrently detect surface electromyogram and tactile pressures,and hence realize real-time closed-loop *** multifunctional and integrated MW sponge sensing system would have great potentials in real-time pressure recognition and human-machine interfaces.

关键词： MXene sheets wood sponges Piezoresistive sensors Compressibility

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