One-Step Urothermal Synthesis of Li⁺‑Intercalated SnS₂ Anodes with High Initial Coulombic Efficiency for Li-Ion Batteries

Tin sulfide, as a promising anode material for Li-ion batteries, suffers from high-capacity loss during cycling and low initial Coulombic efficiency, which limits its further application. In order to solve these problems, Li+-intercalated SnS2 with expanded interlayer spacing (0.89 nm) was prepared by the one-step urothermal method. The successful synthesis of Li+-intercalated SnS2 is confirmed by means of X-ray diffraction, scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, inductively coupled plasma emission spectrometer test, and exfoliation experiment. Compared with pure SnS2, the Li+-intercalated SnS2 electrode displays a higher initial Coulombic efficiency (79.3%) than the pure SnS2 electrode (55%). Also, Li+-intercalated SnS2 exhibits more excellent rate performance (548.4 mAh g–1 at 2 A g–1 and 216.6 mAh g–1 at 10 A g–1) and cycling performance (647.7 mAh g–1 at 0.1 A g–1 after 100 cycles)

One-Step Urothermal Synthesis of Li⁺‑Intercalated SnS₂ Anodes with High Initial Coulombic Efficiency for Li-Ion Batteries

Tin sulfide, as a promising anode material for Li-ion batteries, suffers from high-capacity loss during cycling and low initial Coulombic efficiency, which limits its further application. In order to solve these problems, Li+-intercalated SnS2 with expanded interlayer spacing (0.89 nm) was prepared by the one-step urothermal method. The successful synthesis of Li+-intercalated SnS2 is confirmed by means of X-ray diffraction, scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, inductively coupled plasma emission spectrometer test, and exfoliation experiment. Compared with pure SnS2, the Li+-intercalated SnS2 electrode displays a higher initial Coulombic efficiency (79.3%) than the pure SnS2 electrode (55%). Also, Li+-intercalated SnS2 exhibits more excellent rate performance (548.4 mAh g–1 at 2 A g–1 and 216.6 mAh g–1 at 10 A g–1) and cycling performance (647.7 mAh g–1 at 0.1 A g–1 after 100 cycles)

Comprehensive RNA-Seq Analysis on the Regulation of Tomato Ripening by Exogenous Auxin

<div><p>Auxin has been shown to modulate the fruit ripening process. However, the molecular mechanisms underlying auxin regulation of fruit ripening are still not clear. Illumina RNA sequencing was performed on mature green cherry tomato fruit 1 and 7 days after auxin treatment, with untreated fruit as a control. The results showed that exogenous auxin maintained system 1 ethylene synthesis and delayed the onset of system 2 ethylene synthesis and the ripening process. At the molecular level, genes associated with stress resistance were significantly up-regulated, but genes related to carotenoid metabolism, cell degradation and energy metabolism were strongly down-regulated by exogenous auxin. Furthermore, genes encoding DNA demethylases were inhibited by auxin, whereas genes encoding cytosine-5 DNA methyltransferases were induced, which contributed to the maintenance of high methylation levels in the nucleus and thus inhibited the ripening process. Additionally, exogenous auxin altered the expression patterns of ethylene and auxin signaling-related genes that were induced or repressed in the normal ripening process, suggesting significant crosstalk between these two hormones during tomato ripening. The present work is the first comprehensive transcriptome analysis of auxin-treated tomato fruit during ripening. Our results provide comprehensive insights into the effects of auxin on the tomato ripening process and the mechanism of crosstalk between auxin and ethylene.</p></div

One-Step Urothermal Synthesis of Li⁺‑Intercalated SnS₂ Anodes with High Initial Coulombic Efficiency for Li-Ion Batteries

Tin sulfide, as a promising anode material for Li-ion batteries, suffers from high-capacity loss during cycling and low initial Coulombic efficiency, which limits its further application. In order to solve these problems, Li+-intercalated SnS2 with expanded interlayer spacing (0.89 nm) was prepared by the one-step urothermal method. The successful synthesis of Li+-intercalated SnS2 is confirmed by means of X-ray diffraction, scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, inductively coupled plasma emission spectrometer test, and exfoliation experiment. Compared with pure SnS2, the Li+-intercalated SnS2 electrode displays a higher initial Coulombic efficiency (79.3%) than the pure SnS2 electrode (55%). Also, Li+-intercalated SnS2 exhibits more excellent rate performance (548.4 mAh g–1 at 2 A g–1 and 216.6 mAh g–1 at 10 A g–1) and cycling performance (647.7 mAh g–1 at 0.1 A g–1 after 100 cycles)

One-Step Urothermal Synthesis of Li⁺‑Intercalated SnS₂ Anodes with High Initial Coulombic Efficiency for Li-Ion Batteries

Tin sulfide, as a promising anode material for Li-ion batteries, suffers from high-capacity loss during cycling and low initial Coulombic efficiency, which limits its further application. In order to solve these problems, Li+-intercalated SnS2 with expanded interlayer spacing (0.89 nm) was prepared by the one-step urothermal method. The successful synthesis of Li+-intercalated SnS2 is confirmed by means of X-ray diffraction, scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, inductively coupled plasma emission spectrometer test, and exfoliation experiment. Compared with pure SnS2, the Li+-intercalated SnS2 electrode displays a higher initial Coulombic efficiency (79.3%) than the pure SnS2 electrode (55%). Also, Li+-intercalated SnS2 exhibits more excellent rate performance (548.4 mAh g–1 at 2 A g–1 and 216.6 mAh g–1 at 10 A g–1) and cycling performance (647.7 mAh g–1 at 0.1 A g–1 after 100 cycles)

DEGs associated with cell wall degradation.

<p>DEGs associated with cell wall degradation.</p

Improved Na Storage Performance with the Involvement of Nitrogen-Doped Conductive Carbon into WS₂ Nanosheets

Tungsten disulfide (WS₂) material is regarded as one of the most promising anode candidates for sodium ion batteries (SIBs). However, the exploration of this material still remains a great challenge to improve its cycling capacity. In this paper, nitrogen-doped conductive carbon/WS₂ nanocomposites (WS₂–NC) were fabricated based on the synthesis of the pure WS₂ and conductive carbon/WS₂ (WS₂–C) nanocomposites. The reversible capacity of the as-prepared WS₂–NC is stabilized at ∼360 mA h g^–1 at the density of 100 mA g^–1, even ∼200 mA h g^–1 at 1 A g^–1, presenting much better cycling performance than pure WS₂ and conductive carbon/WS₂ (WS₂–C) samples. This excellent performance is further attributed to obviously promoted interfacial reaction in WS₂ nanosheets at a low voltage platform (0.3–0.0 V), which is considered to closely relate to the incorporation of nitrogen-doped conductive carbon into WS₂ nanosheets. Generally, this work presents an obviously enhanced Na storage performance by the incorporation of N-doped carbon into WS₂ nanosheets to promote their interfacial reaction at low voltage platform. It could provide guidelines to create other high-capacity anode sulfide materials for SIBs

DEGs involved in IAA synthesis and signal transduction.

<p>DEGs involved in IAA synthesis and signal transduction.</p

KEGG enrichment analysis of DEGs in all comparison groups.

<p>The top ten most enriched KEGG pathways in the comparison groups (A) AX1d <i>vs</i>. CK1d and (B) AX7d <i>vs</i>. CK7d. The bars in red, yellow and dark green represent the KEGG pathways with different enrichment levels (<i>Q</i>-value < 0.05, <i>P</i>-value < 0.05 but <i>Q</i>-value > 0.05, <i>P</i>-value > 0.05, respectively).</p

The expression of DEGs in oxidative phosphorylation and the citrate cycle.

<p>The expression patterns of DEGs involved in oxidative phosphorylation and the citrate cycle in the comparison groups (A) AX1d <i>vs</i>. CK1d and (B) AX7d <i>vs</i>. CK7d. Red and green boxes represent the genes that are up-regulated and down-regulated, respectively. The yellow box represents the genes that are both up- and down-regulated.</p