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Composite nanofiber membranes comprising bacterial cellulose (BC) and halloysite nanotubes (HNTs) were prepared by vacuum filtration. The tensile strength and ionic conductivity of the nanofiber membranes were improved by the blending of HNTs. The BC/HNTs nanofiber membrane with m(BC): m(HNTs) = 150: 1 (denoted as BC/HNTs-150) exhibited superior tensile strength (84.4 MPa), high porosity (83.0%),...
Metal-organic frameworks (MOFs) are recently attracting more and more interests as supercapacitor electrode materials. However, their low conductivity largely thwarts their capacitance performance. Herein, fabric electrodes for flexible supercapacitors were successfully fabricated by depositing polypyrrole (PPy) nanotubes and Zr-based MOF (UiO-66) particles on cotton fabrics. The PPy nanotubes could...
Yarn supercapacitors (YSCs) are attracting considerable interest for wearable electronics and intelligent textiles due to their high flexibility and weavability. In the present study, stainless steel/cotton blended yarns were used as supports and current collectors to produce polypyrrole-coated yarn electrodes. The as-made YSC exhibited a high areal specific capacitance of 344 mF cm−2 at a current...
Conductive fabrics have achieved significant attention in the field of wearable electronics. Herein, a novel and simple method was developed to fabricate nickel-coated cotton fabrics. Triazine groups were bonded onto the cotton fabrics through treating by cyanuric chloride solution to absorb silver ions and to form a catalytical layer on the fabrics, which could successfully initiate the subsequent...
Paper with color changes caused by applied electric voltages was fabricated by combining the electric heating feature of conductive polypyrrole (PPy) and the temperature response color-changing feature of thermochromic ink. Highly conductive PPy was deposited selectively on the graphite-coated side of the paper via electrochemical polymerization. Thermochromic ink was coated on the reverse side with...
The bacterial cellulose (BC)/Al2O3 nanofibrous composite membrane as a lithium-ion battery separator has been successfully prepared by coating Al2O3 on the BC nanofibers through a simple in situ thermal decomposition of Al(NO3)3 · 9H2O. Thermal treatment tests show that the BC/Al2O3 composite membrane is thermally stable at a high temperature of 200 °C while great shrinkage is observed for the commercial...
The increasing trend of portable electronic products requires the development of portable and flexible energy-storage devices, such as flexible supercapacitors. In this study, we deposited polypyrrole (PPy) and nickel sulfide (NiS) on bacterial cellulose (BC) nanofibrous membranes to be used as flexible supercapacitor electrodes. The obtained PPy/NiS/BC composite membranes are highly conductive, with...
Monodispersed inorganic oxide nanoparticles are one kind of the most commonly used templates for efficient and controllable preparation of conducting polymer nanostructures. In this article, we report the fabrication and characterization of PPy-coated cotton fabrics through in situ chemical polymerization by using CuO nanoparticles as template. The electrical conductivity of the coated samples...
With NHPI/Co(OAc)2 as catalyst and air as oxidant, carboxylic group functionalized cellulose was prepared by oxidation of cellulose in acetic acid. Fourier transform infrared spectroscopy was utilized to detect the generation of carboxylic group and the acid amount was determined by acid–base titration method. The present results revealed that C6 primary hydroxyl groups on glucose units were partly...
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