Donghua University

About: Donghua University is a education organization based out in Shanghai, China. It is known for research contribution in the topics: Fiber & Nanofiber. The organization has 21155 authors who have published 21841 publications receiving 393091 citations. The organization is also known as: Dōnghuá Dàxué & China Textile University.

Carbon nanotube polymer coatings for textile yarns with good strain sensing capability

Abstract: In this study, a commercially available Spandex multifilament yarn was coated with a thermoplastic polyurethane/carbon nanotube (TPU/CNT) conductive polymer composite (CPC), and conductive elastic yarns with good strain sensing ability were achieved with equivalent CNT concentrations as low as 0.015 wt.%. The resistance per meter coated yarn decreased with increasing CNT concentration in the CPC coating, while in the case of a homogeneous coating, the CPC concentration in the coating solution did not have a significant effect on the resistance per meter coated yarn. Upon cyclic loading, the strain sensing behaviour showed partial recovery of resistance in the first loading cycle, while good reversibility was observed a number of cycles, giving these materials good potential as sensors for smart textiles.

Mechanism analysis of the capacitance contributions and ultralong cycling-stability of the isomorphous MnO2@MnO2 core/shell nanostructures for supercapacitors

Abstract: A facile method to synthesize isomorphous MnO2@MnO2 core/shell nanostructures was developed for the first time by using MnO2 nanowires as seed crystals. These unique nanoarchitectures consisting of an isomorphous layer of β-MnO2 nanosheets well grown on the surface of β-MnO2 nanowires exhibit remarkable electrochemical performance with high capacitance and ultra long cycle life, i.e., nearly 92.2% retention after 20 000 cycles at a current density of 5 A g−1. The enhanced specific capacitance of the MnO2@MnO2 electrode is largely contributed by the capacitive processes including double-layer charging and Faradaic pseudocapacity. Particularly, these intriguing behaviors are strongly correlated with the unique isomorphous core/shell hierarchical configuration and high mechanical stability as well as the better interfacial structures between the MnO2 nanowire core and the ultrathin MnO2 nanosheet shell. In addition, it is demonstrated that the formation of defective and disordered regions throughout the whole core/shell architecture is the main cause for the unusual increased capacity during the early stages of cyclic charge/discharge.

Hydrophilic Cu2ZnSnS4 nanocrystals for printing flexible, low-cost and environmentally friendly solar cells

Abstract: Using Cu2ZnSnS4 (CZTS) nanocrystal-based ink (via a solvothermal route) and roll-to-roll printing, CZTS films are prepared on a Mo-coated Al foil, and then flexible solar cells with a structure of Al foil/Mo/CZTS/ZnS/i-ZnO/ITO/Al–Ni and a power conversion efficiency of 1.94% are constructed, in which all the materials are low-cost and environmentally friendly.