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Chen J.,Southwest University | Chen J.,Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies | Liu Y.,Southwest University | Liu Y.,Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies | And 8 more authors.
Journal of Materials Science | Year: 2015

In this work, nanostructured polystyrene/polyaniline/reduced graphene oxide (PS–PANI/rGO) hybrid materials based on in situ reduction of graphene oxide with ascorbic acid and self-assembly have been successfully prepared for electrochemical supercapacitor and Na-ion battery applications. The supercapacitor based on the PS–PANI/rGO as an electrode material exhibits a specific capacitance of 180 F g−1 at a current density of 0.5 A g−1 from −0.4 to 1.0 V and a high energy density of 49 W h kg−1 at the power density of 352.8 W kg−1. Moreover, the nanostructured PS–PANI/rGO has a good cycle stability (74 % capacitance retention after 5000 cycles), indicating its future potential application in electrochemical energy storage. The material is further used as an anode in Na-ion batteries, and the results show that the porous nanostructured PS–PANI/rGO delivers a high capacity of 155 mA h g−1 and keeps over 150 charge–discharge cycles at a constant current of 100 mA g−1 (0.5 C). © 2015, Springer Science+Business Media New York.


PubMed | Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies
Type: Journal Article | Journal: Chemical communications (Cambridge, England) | Year: 2015

Transient spikes from the bacteriorhodopsin (bR) photocycle are triggered with NIR irradiation for the first time by integrating bR with upconversion nanoparticles. This work may open new horizons for the bR applications in the IR wavelength range.

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