Electronic fibers used to fabricate wearable triboelectric nanogenerator(TENG)for harvesting human mechanical energy have been extensively explored.However,little attention is paid to their mutual advantages of environmental friendliness,mechanical proper-ties,and stability.Here,we report a super-strong,biodegradable,and washable cellulose-based conductive macrofibers,which is prepared by wet-stretching and wet-twisting bacterial cellulose hydrogel incorporated with carbon nanotubes and polypyrrole.The cellulose-based conductive macrofibers possess high tensile strength of 449 MPa(able to lift 2 kg weights),good electrical conductivity(-5.32 S cm-1),and excellent stability(Tensile strength and conductivity only decrease by 6.7％and 8.1％after immersing in water for 1 day).The degradation experiment demonstrates macrofibers can be degraded within 108 h in the cellu-lase solution.The designed fabric-based TENG from the cellulose-base conductive macrofibers shows a maximum open-circuit voltage of 170 V,short-circuit current of 0.8 μA,and output power at 352 μW,which is capable of powering the commercial electronics by charging the capacitors.More importantly,the fabric-based TENGs can be attached to the human body and work as self-powered sensors to effectively monitor human motions.This study suggests the potential of biodegradable,super-strong,and washable conductive cellulose-based fiber for designing eco-friendly fabric-based TENG for energy harvesting and biomechanical monitoring.

Sanming Hu;Jing Han;Zhijun Shi;Kun Chen;Nuo Xu;Yifei Wang;Ruizhu Zheng;Yongzhen Tao;Qijun Sun;Zhong Lin Wang;Guang Yang

College of Life Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,People's Republic of China;Beijing Institute of Nanoenergy and Nanosystems,Chinese Academy of Sciences,Beijing 101400,People's Republic of China;State Key Laboratory of New Textile Materials and Advanced Processing Technologies,Wuhan Textile University,Wuhan 430200,People's Republic of China;School of Nanoscience and Technology,University of Chinese Academy of Sciences,Beijing 100049,People's Republic of China;Center On Nanoenergy Research,School of Physical Science and Technology,Guangxi University,Nanning 530004,People's Republic of China;School of Materials Science and Engineering,Georgia Institute of Technology,Atlanta,GA 30332-0245,USA

纳微快报（英文）

[1]Sanming Hu;Jing Han;Zhijun Shi;Kun Chen;Nuo Xu;Yifei Wang;Ruizhu Zheng;Yongzhen Tao;Qijun Sun;Zhong Lin Wang;Guang Yang-.Biodegradable,Super-Strong,and Conductive Cellulose Macrofibers for Fabric-Based Triboelectric Nanogenerator)[J].纳微快报（英文）,2022(07):157-176

Macrofibers,washable,macrofibers,TENGs

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