期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 4, 期 30, 页码 11616-11624出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ta04081k
关键词
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资金
- Applied Fundamental Foundation of Sichuan Province [2014JY0202]
- R&D Foundation of China Academy of Engineering Physics [2014B0302036]
- Science Foundation for Distinguished Young Scholars of Sichuan Province [2016JQ0025]
- National Natural Science Foundation of China [21401177, 21501160]
- 1000 plan from the Chinese Government
- Collaborative Innovation Foundation of SiChuan University [XTCS2014009]
Recently, fiber-shaped yarn supercapacitors (YSCs) have attracted extensive attention due to their merits of small volume, high flexibility and potential to be woven in textiles for future wearable electronics. PEDOT:PSS possesses properties of high-redox capacitance, high conductivity and high intrinsic flexibility, so PEDOT: PSS yarn electrodes are quite promising in the field of YSCs. However, to the best of our knowledge, twisted yarns based on wetspun PEDOT: PSS fibers for fiber-shaped YSCs have not been reported. Herein, we develop a new coagulation bath with CaCl2 in aqueous solution for preparing meter-long PEDOT: PSS fibers. The PEDOT: PSS fibers with good mechanical properties can be easily woven, sewed, knotted and braided as the YSC electrode. The PEDOT: PSS fiber-based YSCs show a high areal capacitance of 119 mF cm(-2) and areal energy density of 4.13 mu W h cm(-2). Meanwhile, the all-solid-state YSCs are flexible and robust enough to tolerate the long-term and repeated bending without an obvious capacitance drop.
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