Showing papers in "Nano Energy in 2015"

TL;DR: In this paper, the authors systematically analyzed the theoretical system of TENGs and provided a theoretical basis for TENG designers to continue improving TENG output performance, including intrinsic output characteristics, load characteristics, and optimization strategy.

TL;DR: In this paper, a 2D/2D hybrid heterojunction photocatalyst with effective interfacial contact by incorporating reduced graphene oxide and protonated g-C 3 N 4 (pCN) synthesized by a novel combined ultrasonic dispersion and electrostatic self-assembly strategy followed by a NaBH 4 -reduction process was reported.

TL;DR: In this article, the authors reviewed the most updated progress of self-powered active sensors as a response to a stimulation/triggering from the ambient environment, including the four basic working modes of TENGs.

TL;DR: In this paper, a comprehensive review on the fundamentals, operating modes, device design and performance enhancement of the triboelectric nanogenerator has been presented, which provides a viable means of powering portable and wearable electronics, but also demonstrates a possible route towards power generation in large scale.

TL;DR: In this article, densely porous graphene-like carbon (PGC) materials were greenly synthesized through hydrothermal treatment of fungus (Auricularia) and subsequent carbonization process.

TL;DR: Graphene-based nitrogen self-doped hierarchical porous carbon aerogels were synthesized for supercapacitor electrode application by using chitosan as a raw material through a carefully controlled aerogel formation and activation process as discussed by the authors.

TL;DR: In this paper, a facile precursor pre-treatment method, by forming hydrogen bond-induced supramolecular aggregates, to fabricate g-C 3 N 4 with simultaneous novel porous network and controllable O-doping was reported.

TL;DR: Graphene oxide (GO), the functionalized graphene with oxygen-containing chemical groups, has recently attracted resurgent interests because of its superior properties such as large surface area, mechanical stability, tunable electrical and optical properties as discussed by the authors.

TL;DR: Li et al. as mentioned in this paper proposed an effective strategy to obtain flexible Li-S battery electrodes with high energy density, high power density, and long cyclic life by adopting graphene foam-based electrodes.

TL;DR: In this article, an asymmetric supercapacitors are fabricated using coaxial CNT/Ni(OH) 2 composites as positive electrode and reduced graphene oxide (rGO) as negative electrode.

TL;DR: In this article, a review of the nano-architectured NiCo2O4-based electrodes for supercapacitors is presented, which is organized by techniques used for synthesis including chemical methods with and without templates along with their electrochemical properties.

TL;DR: In this article, the authors report the UV-visible-NIR broad spectrum active photocatalytic property of CQDs/hydrogenated TiO2 (H-TiO2) nanobelt heterostructures.

TL;DR: In this paper, a review summarises the work to date on nanostructured piezoelectric energy harvesters, commonly referred to as nanogenerators, starting with early reports of PZO output from single strained ZnO nanorods, and moving through the use of nanorod arrays, flexible substrates and alternative materials and nanostructure.

TL;DR: In this article, a nitrogen-doped carbon nanofiber (N-CNF) aerogel metal-free ORR electrocatalyst was developed by direct pyrolysis of a cheap, green, and mass-producible biomass, followed by NH 3 activation.

TL;DR: Li et al. as discussed by the authors proposed an effective strategy to obtain flexible Li-S battery electrodes with high energy density, high power density and long cyclic life by adopting graphene foam-based electrodes.

TL;DR: In this article, a nonaqueous K-ion battery (KIB) was designed and fabricated by employing 3,4,9,10-perylene-tetracarboxylicacid-dianhydride (PTCDA) as the cathode.

TL;DR: In this article, the first theoretical model of FTENGs is proposed with thorough analysis of their operation principle and the coupling effect of the height of the freestanding layer and the electrode gap on their output characteristics are discussed in detail to obtain the strategy for their structural optimization.

TL;DR: In this paper, the growth of ultrathin Ni(OH)2 nanosheets on nickel foam at room temperature via a cost effective and simple process, oxidizing fresh nickel foam in a wet environment followed by a morphology transformation in a mixed alkaline and oxidative solution without the need for any additional nickel sources, templates, or surfactants.

TL;DR: In this article, a flexible, cross-linked N-doped carbon nanofiber network (CLCF) is successfully prepared via electrospinning and carbonization process, which shows a specific capacitance of 175 F/g at the current density of 50 A/g with an excellent rate capability of 78.5% of its initial capacitance.

TL;DR: In this article, a hierarchical layered graphene composite was used as an anode material for high-rate SIBs, achieving an outstanding rate capacity of 120mAh/g at 10A/g, which is among best of the state-of-the-art carbon-based SIB.

TL;DR: A facile hydrothermal method is utilized to produce nanostructured NiCo2S4 arrays on carbon fiber paper with controlled morphologies to study the effect of morphology on their electrochemical performance in supercapacitors as mentioned in this paper.

TL;DR: In this paper, the CoP nanosheet assembly on carbon cloth can be formed by a two-step process: electrochemical deposition of Co species followed by gas phase phosphidation.

TL;DR: In this article, a comprehensive summary has been presented based on the research of nano-encapsulated phase change materials (NanoPCM) in recent years, in which four aspects have been reviewed in detail: preparation and characterization of NanoPCM, application of nanoPCM in latent functional thermal fluid, dynamics simulation study of nanophotonics, and heat transfer enhancement of NanPCM.

TL;DR: In this article, the authors reported measured vapor generation efficiencies of 69% at solar concentrations of 10 sun using graphitized carbon black, carbon black and graphene suspended in water, representing a significant improvement in both transient and steady-state performance over previously reported results.

TL;DR: In this paper, uniform NiO nanoparticles on different substrates were successfully synthesized by a simple and low-cost solvothermal method and achieved high capacitance (1386 F g−1 at 1 ǫg−1) and excellent rate capability.

TL;DR: In this article, the photocatalytic activity of ZnO nanowires for degrading methylene blue has been enhanced by the piezoelectric-driven separation of photo-generated carriers.

TL;DR: In this article, a piezoelectric nanogenerator (PENG) based on ZnO nanowires (NWs) is proposed for energy harvesting.

TL;DR: In this paper, a simple solution and room-temperature processed reduced graphene oxide (RGO) as a novel hole-transporting material (HTM) to guarantee highly efficient and highly stable CH3NH3PbI3 perovskite solar cells (PeSCs).

TL;DR: In this article, an efficient perovskite solar cells with high transparency in the visible spectrum have been developed, which include a dielectric metal-dielectric multilayered top electrode and an optimized solution-based thin and continuous methylammonium lead iodide film.

TL;DR: In this paper, the application of graphdiyne (GDY) as high efficiency lithium storage materials and elucidate the method of lithium storage in multilayer GDY is reported.