71 research outputs found

    High-Energy-Density Asymmetric Supercapacitor Based on Free-Standing Ti<sub>3</sub>C<sub>2</sub>T<i><sub>X</sub></i>@NiO-Reduced Graphene Oxide Heterostructured Anode and Defective Reduced Graphene Oxide Hydrogel Cathode

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    The rational design of an asymmetric supercapacitor (ASC) with an expanded operating voltage window has been recognized as a promising strategy to maximize the energy density of the device. Nevertheless, it remains challenging to have electrode materials that feature good electrical conductivity and high specific capacitance. Herein, a 3D layered Ti3C2TX@NiO-reduced graphene oxide (RGO) heterostructured hydrogel was successfully synthesized by uniform deposition of NiO nanoflowers onto Ti3C2TX nanosheets, and the heterostructure was assembled into a 3D porous hydrogel through a hydrothermal GO-gelation process at low temperatures. The resultant Ti3C2TX@NiO-RGO heterostructured hydrogel exhibited an ultrahigh specific capacitance of 979 F g–1 at 0.5 A g–1, in comparison to that of Ti3C2TX@NiO (623 F g–1) and Ti3C2TX (112 F g–1). Separately, a defective RGO (DRGO) hydrogel was found to exhibit a drastic increase in specific capacitance, compared to untreated RGO (261 vs 178 F g–1 at 0.5 A g–1), owing to abundant mesopores. These two materials were then used as free-standing anode and cathode to construct an ASC, which displayed a large operating voltage (1.8 V), a high energy density (79.02 Wh kg–1 at 450 W kg–1 and 45.68 Wh kg–1 at 9000 W kg–1), and remarkable cycling stability (retention of 95.6% of the capacitance after 10,000 cycles at 10 A g–1). This work highlights the unique potential of Ti3C2TX-based heterostructured hydrogels as viable electrode materials for ASCs

    FoxO directly binds to TOR/S6K and vitellogenin to modulate the fecundity of the brown planthopper

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    These data include ChIP-seq analysis results, Western bolt results,qrt results,cell experiment results and bioassay result

    How bee colonies allocate foraging among food sources with different food qualities and levels of predator danger.

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    <p>Sucrose-only feeders are shown as white bars, the butterfly control as a striped bar and the small (sm) and big hornet species as gray and black bars, respectively. Standard error bars are shown. In each graph, different letters indicate significant differences. We show the mean number of foragers at the feeder arrays in (A) experiment 1, (B) experiment 2, and (C) experiment 3 parts A and B. In experiment 3 part A, feeders had sucrose only (bars with thick lines). Part B used the same range of sucrose concentrations, but with the indicated hornet species at the higher sucrose concentrations.</p

    Phylogenetic tree of 29 Amomi Fructus landraces constructed by the UPGMA method based on 35 single nucleotide polymorphisms (SNPs) from four loci (ITS, <i>LSU</i> D1–D3, <i>rbcL</i>, and <i>matK</i>). Numbers on the UPGMA tree branches are bootstrap values (1,000 replicates).

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    <p>Numbers above the bases indicate the position of SNPs in each locus. *The SNPs of ITS included ITS1 (red numbers) and ITS2 (blue numbers). Heterozygous sites were defined according to IUPAC, <i>i.e.</i>, W =  A/T; M =  A/C; R =  A/G; Y =  C/T; S =  G/C.</p

    Mean proportion of choices for the safe feeder over five trials.

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    <p>The different treatments are identified above each plot (1 = all choices for safe feeder). Different shades of gray correspond to different imidacloprid concentrations. Standard error bars are shown.</p
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