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Multifunctional Self‐Charging Electrochromic Supercapacitors Driven by Direct‐Current Triboelectric Nanogenerators
Author(s) -
Guo Wenbin,
Cong Zifeng,
Guo Zi Hao,
Zhang Panpan,
Chen Yanghui,
Hu Weiguo,
Wang Zhong Lin,
Pu Xiong
Publication year - 2021
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202104348
Subject(s) - triboelectric effect , supercapacitor , electrochromism , materials science , capacitance , energy storage , energy harvesting , mechanical energy , nanotechnology , nanogenerator , electrochemical energy conversion , optoelectronics , electrochemistry , energy (signal processing) , power (physics) , electrode , composite material , piezoelectricity , chemistry , physics , statistics , mathematics , quantum mechanics
Electrochromic supercapacitor devices (ESCDs) are highly promising for energy‐saving applications or smart windows, whereas they still require electrical energy inputs. In this study, a self‐charging ESCD (SC‐ESCD) based on the ESCD and a sliding‐mode direct‐current triboelectric nanogenerators is successfully proposed. The SC‐ESCD cannot merely convert mechanical sliding kinetic energy into electrical energy and store the electricity in electrochromic supercapacitors but can also show optical responses to the mechanical sliding motions. The prominent electrochemical performances of the SC‐ESCD are confirmed by the high areal capacitance (15.2 mF cm −2 at 0.1 mA cm −2 ) and stable cycling performance (99% for 5000 cycles). Besides, it can be prepared into arbitrary characters or patterns to adapt to various applications. The study demonstrates a potential approach to develop multifunctional self‐charging power sources which combine energy harvesting, energy storage, and electrochromic functions.