Journal
CELLULOSE
Volume 27, Issue 13, Pages 7649-7661Publisher
SPRINGER
DOI: 10.1007/s10570-020-03307-2
Keywords
Yarn supercapacitor; Bacterial cellulose; Polypyrrole; Carbon nanotube
Funding
- Natural Science Foundation of China [51703170, 21673167]
- Technical Innovation Special Project of Hubei Province [2019AAA005]
- Fundamental Research Funds for the Central Universities [WUT: 2019III116CG]
- Analytical and Testing Center (WTU)
- National Key Research and Development Program of China [2016YFA0101102]
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With the rapid development of flexible electronic device, yarn supercapacitors (YSCs) as one kind of flexible energy storage devices are attracting more and more attention. Carbon nanotube (CNT) and conductive polymers are widely investigated as potential active materials in energy storage field. Bacterial cellulose (BC) nanofiber is one of highly promising alternatives to the flexible substrates. Hence, an all-solid-state YSC is successfully fabricated via twisting CNT@BC membrane and electrochemically depositing polypyrrole. The proposed YSC demonstrates a high areal capacitance of 458 mF cm(-2) at a current density of 0.8 mA cm(-2) as well as a robust cycling stability (no significant degradation in capacitance after 2000 cycles). Moreover, the proposed YSC is comparatively flexible, confirming it as a promising power source candidate for portable and wearable electronics.
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