Highly Reversibly Stretchable and Elastically Wearable Textile Supercapacitor

Hao Gu; Yiqing Zeng; Qin Zhong; Yunfei Bu

doi:10.1021/acsami.3c02306

Highly Reversibly Stretchable and Elastically Wearable Textile Supercapacitor

ACS Appl Mater Interfaces. 2023 May 24;15(20):24448-24458. doi: 10.1021/acsami.3c02306. Epub 2023 May 10.

Authors

Hao Gu¹, Yiqing Zeng², Qin Zhong¹, Yunfei Bu³

Affiliations

¹ School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China.
² School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, P. R. China.
³ Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), UNIST-NUIST Research Center of Environment and Energy (UNNU), Nanjing University of Information Science and Technology, Nanjing 210044, P. R. China.

PMID: 37165628
DOI: 10.1021/acsami.3c02306

Abstract

Rapid and full recovery is the major challenge for the commercialization and further growth of textile-based wearable supercapacitors. Herein, reversibly stretchable and rapidly reboundable textile supercapacitors (TSCs) are developed via the utilization of NiCu₂Se₃/Cu-Ni alloy-plated cotton cloth (CNAPCC) textile as the cathode and Fe₂CuSe₃/CNAPCC textile as the anode. Both NiCu₂Se₃/CNAPCC and Fe₂CuSe₃/CNAPCC are obtained by a simple in situ oxidation reaction, followed by an ion exchange strategy. Meanwhile, a stable double-network (DN) structure is constructed, covering the knitted cotton cloth (KCC) and Cu-Ni alloy-plated layer (CNAPL). The DN textile structure significantly endows the NiCu₂Se₃/CNAPCC stretchable electrode with superior mechanical properties, exhibiting high elongation at a break of 470% with a stress of 7.19 MPa and full recovery after 100% strain with almost no residual deformation left after merely 0.2 s. Moreover, the assembled TSC provides a large energy density of 82 Wh kg^-1 at a power density of 750 W kg^-1. Besides, 50,000 charge/discharge cycle tests under static stretching are performed. The supercapacitor exhibits rapid recovery and excellent cycling stability of 92.2% capacitance retention under different strains (from 0 to 200%).

Keywords: cotton−metallic textile electrode; rapidly reboundable; reversibly stretchable; ternary selenides; textile supercapacitor.