We present a composite elastic electrolyte based on polyurethane (PU) with high ionic conductivity of 10⁻³ S/cm and excellent mechanical properties (stress-strain) of 4.5 MPa by incorporating...

Vanadium tetrasulfide (VS 4 ) owns a distinctive linear‐chain structure which might provide potential sites for lithium‐ion storage. Although it has drew recent attention as an...

2021年6月30日 · Furthermore, the VS 4 @rGO cathode presents long-life cycling stability with capacity retention of ∼82% after 3500 cycles at 10 A g −1. The structural evolution, redox, and degradation mechanisms of VS 4 during (dis)charge processes are further probed by in situ XRD/Raman techniques and TEM analysis.

Here we show for the first time that template-free VS 4 can be synthesized in a hydrothermal reaction by controlling key parameters of the reaction: mainly time, temperature, and pH. The phase and morphology of VS 4 materials are tracked carefully using X-ray diffraction (XRD) and scanning electron microscopy (SEM) under each reaction condition.

The XRD patterns of pure VS 2 nanosheets and rGO-VS 2 composites showed that the (001) peak of VS 2 was significantly shifted to a lower angle compared with the standard VS 2 , indicating that...

Here we show for the first time that template-free VS can be synthesized in a hydrothermal reaction by controlling key parameters of the reaction: mainly time, temperature, and pH. The phase and morphology of VS materials are tracked carefully using X-ray diffraction (XRD) and scanning electron microscopy (SEM) under each reaction condition.

VS 4在（放电）过程中的结构演变、氧化还原和降解机制通过原位XRD/拉曼技术和 TEM 分析进一步探测。 我们的结果表明，主要的能量存储机制来自于 VS 4开放通道中的嵌入/脱嵌反应。

2015年4月1日 · The successful phase transition from VS 4 to VS 2 on rGO sheets after annealing was confirmed by SEM, TEM, TGA/DSC, XRD and XPS. The role of rGO sheets in the phase transition is discussed from comparison with annealed VS 4 /CNT.

Herein, VS4 with a 3D structure composed of uniform nanosheets is successfully prepared through a simple solvothermal method. SEM and TEM images exhibit that VS4 with a perfect 3D structure can be obtained at 180 °C after 20 h (VS4-20 h). Benefiting from the perfect 3D structure, VS4-20 h presents excellent sodium storage performance.

Stabilizing Intermediate Phases via Efficient Entrapment Effects of Layered VS4/SnS@C Heterostructure for Ultralong Lifespan Potassium‐Ion Batteries