2 research outputs found

    In Situ Synthesis of WSe<sub>2</sub>/CMK‑5 Nanocomposite for Rechargeable Lithium-Ion Batteries with a Long-Term Cycling Stability

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    Transition metal dichalcogenides (TMDs) have received intensive interests in lithium-ion batteries owing to their unique lithium-ion storage ability when evaluated as anode materials. In the present work, a nanocomposite of WSe<sub>2</sub>/CMK-5 was successfully fabricated via a nanocasting route, introducing the unique structure of mesoporous carbon (CMK-5) as a nanorecator. Benefiting from a synergetic effect of WSe<sub>2</sub> nanosheets and mesoporous carbon, the WSe<sub>2</sub>/CMK-5 hybrid electrode exhibited large reversible capacity, high rate performance, and excellent long-term cycling stability. For instance, a specific capacity of 490 mA h g<sup>–1</sup> can remain even after 600 cycles at a current density of 0.5 A g<sup>–1</sup>

    Ternary Photoanodes with AgAu Nanoclusters and CoNi-LDH for Enhanced Photoelectrochemical Water Oxidation

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    Atomically precise metal nanoclusters (NCs) present new opportunities for creating innovative solar-powered photoanodes due to their extraordinary physicochemical properties. Nevertheless, ultrasmall metal NCs tend to aggregate and lack active sites under light irradiation, which severely limits their widespread application. We have developed a strategy to design efficient ternary photoanodes by successively modifying AgAu NCs and CoNi-LDH on BiVO4 substrates using versatile impregnation and electrodeposition. The electronic properties of AgAu NCs facilitate the rapid transfer of photogenerated carriers on BiVO4 and CoNi-LDH. Additionally, ultrathin CoNi-LDH acts as a hole-collecting layer, which quickly extracts holes to the electrode/electrolyte interface. The synergistic effect and the matched energy levels between the ternary heterostructures promote the OER process, which significantly improved the photoelectrochemical (PEC) water oxidation performance. This study presents a new idea for further exploration of metal nanocluster-based PEC systems
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