Terminal Group‐Oriented Self‐Assembly to Controllably Synthesize a Layer‐by‐Layer SnSe₂ and MXene Heterostructure for Ultrastable Lithium Storage

Abstract

capability, and ultrastable cycling performance (410 mAh g −1 after 16 000 cycles at 5 C). Experimental analysis and DFT calculations demonstrate that the LBL-SnSe 2 @MXene possesses superior lithium adsorption ability, excellent lithium transport capability, and remarkable structure stability. Therefore, the LBL-SnSe 2 @MXene is a very promising anode material for next-generation high-performance LIBs.

In Situ Charge Modification within Prussian Blue Analogue Nanocubes by Plasma for Oxygen Evolution Catalysis

“…The insight into the OER process is provided by a Raman spectrometer (Figure S10a). During the activation process, NiFeOOH can be generated from NiFe PBA after 20 CV cycles since Raman shifts appear at 473 and 550 cm –1 , which can be related to the E g bending vibration and A 1g stretching vibration in NiFeOOH active species. , Meanwhile, the XRD (Figure S10b) diffraction peaks of NiFe PBA disappear and no other new peaks occur, indicating that the PBA crystal gradually transforms into amorphous NiFeOOH during the OER process …”

“…The pursuit of high-performance electrocatalysts for sustainable energy storage and conversion systems has been a key step to meet the growing energy demand and fossil fuel consumption. − Oxygen evolution reaction (OER) is a crucial process for driven water cracking, − fuel cell, and rechargeable metal–air cell. , However, the slow dynamics of the multistep OER need high energy consumption and accordingly limit the overall energy conversion efficiency, especially in water splitting. , Noble metal oxides (RuO 2 and IrO 2 ) have been proven to be effective OER catalysts, although widespread application is still limited by their high cost. − …”

Research on Natural Gas Production Behavior Using Stepwise Depressurization with a Horizontal Well

“…Natural gas hydrates (NGH) are clathrate nonstoichiometric crystal compounds consisting of methane and water molecules, which mainly occur in deep-sea sediments and permafrost areas . With the exhaustion of conventional fossil energy and increasing environmental problems, natural gas hydrates have become the most potential new clean energy because of their large reserves, high energy densities, and environmental friendliness. − In recent years, pilot-scale exploitation has been conducted using vertical wells as a preliminary attempt. In 2007, a depressurization test using a vertical well was implemented at the Mallik permafrost site .…”

Carbon Confined Mesoporous Catkin-like SnPS3 Nanostructure for Lithium Storage with Great Superiority

“…Figure S8 shows the volume expansion of the SnPS 3 @C electrode is only 26% after full lithiation to 0.005 V. Furthermore, the carbon confined catkin-like nanostructure is displayed to be largely preserved even after 1000 cycles (Figure S9), confirming it is a remarkably stable structure for repeated lithiation/delithiation cycles. Moreover, the R ct value (Figure S10 and Table S2), the Warburg factor (σ, Figure a) and the exchange current density ( j 0 , Figure b) of SnPS 3 @C electrode after the 1000th cycle ( R ct : 26.3 Ω, σ: 123.9, j 0 : 8.7 × 10 –4 A cm –2 ) are also validated to qiute stable compared to that of the 10th cycle ( R ct : 24.0 Ω, σ: 115.1, j 0 : 9.4 × 10 –4 A cm –2 ) . Therefore, the catkin-like SnPS 3 @C is a very excellent lithium storage anode with remarkable structural and electrochemical stability.…”

“…Moreover, the R ct value (Figure S10 and Table S2), the Warburg factor (σ, Figure 6a) and the exchange current density (j 0 , Figure 6b) of SnPS 3 @C electrode after the 1000th cycle (R ct : 26.3 Ω, σ: 123.9, j 0 : 8.7 × 10 −4 A cm −2 ) are also validated to qiute stable compared to that of the 10th cycle (R ct : 24.0 Ω, σ: 115.1, j 0 : 9.4 × 10 −4 A cm −2 ). 54 Therefore, the catkin-like SnPS 3 @C is a very excellent lithium storage anode with remarkable structural and electrochemical stability.…”