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Wang, Siliang; Liu, Nishuang; Tao, Jiayou; Yang, Congxing; Liu, Weijie; Shi, Yuling; Wang, Yumei; Su, Jun; Li, Luying; Gao, Yihua
Journal of materials chemistry. A, Materials for energy and sustainability, 01/2015, Volume: 3, Issue: 5Journal Article
A multi-walled carbon nanotube (MWCNT) and silver (Ag) nanoparticle ink for inkjet printing was prepared by dispersing MWCNTs and Ag nanoparticles in water with the assistance of sodium dodecylbenzenesulfonate (SDBS). Highly conductive patterns of Ag-MWCNTs were printed on paper using a HP Deskjet 1010 inkjet printer. The patterns showed good stability during the bending test and a low sheet resistance of similar to 300 Omega sq super(-1) after being printed 50 times. By simply adding manganese dioxide (MnO sub(2)) nanoparticles with a diameter of 60-90 nm into the ink solution, patterned positive electrodes were prepared for asymmetric supercapacitors (ASCs) with filtrated MWCNT negative electrodes. The ASCs exhibit a wide operating potential window of 1.8 V and excellent electrochemical performances, e.g.a high energy density of 1.28 mW h cm super(-3) at a power density of 96 mW cm super(-3) and a high retention ratio of similar to 96.9% of its initial capacitance after 3000 cycles. The inkjet-printing acting as a simple, low-cost, non-contact deposition method can be fully integrated with the fabrication process in current printed electronic devices and has potential applications in energy storage.
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