The remarkable features of transition metal chalcogenides (TMCs) have attracted much interest in materials science. TMCs have the benefit of being easily synthesized into multiple nano-structural configurations, which opens up a world of possibilities, specifically when it comes to doping with other materials. Due to this phenomenon, it is possible to synthesize diverse doped materials with extensive surface areas and suitable for in electrochemical energy storage systems. The present investigation presents the synthesis of pristine MnTe and Ag-doped MnTe utilizing the hydrothermal route. However, the electrode containing Ag exhibits a notable enhancement in performance, as evidenced by its specific capacitance (Csp) of 1367.98 F g−1 when operated at 1 A g−1. Investigation of electrochemical phenomena indicates that the observed improvement in performance can be ascribed to enhancement in conductivity. This conclusion was supported by the findings from electrochemical impedance spectroscopy (EIS), which demonstrated reduced electrolyte and charge transfer resistance. Additionally, the material exhibited excellent cyclic and structural stability, further validating the positive impact on performance. Furthermore, the incorporation of dopant into the material has been found to enhance adsorption of OH− ions on the interface of material, thus promoting electrochemical reaction. This research contributes to the existing knowledge on the Ag-doped MnTe and has the potential to inform future advancements in the development of synthesized material.

中文翻译：

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银 （Ag） 对碲化锰 （MnTe） 增强超级电容器应用电化学性能的影响


过渡金属硫属化物 （TMC） 的显著特性引起了材料科学界的极大兴趣。TMC 的优点是很容易合成成多种纳米结构构型，这开辟了一个充满可能性的世界，特别是在掺杂其他材料时。由于这种现象，可以合成具有广泛表面积的多种掺杂材料，适用于电化学储能系统。本研究介绍了利用热液路线合成原始 MnTe 和 Ag 掺杂 MnTe。然而，含有 Ag 的电极在性能上表现出显着的增强，当在 1 A g-1 下运行时，其比电容 （Csp） 为 1367.98 F g-1 证明了这一点。对电化学现象的研究表明，观察到的性能改善可归因于电导率的增强。电化学阻抗谱 （EIS） 的结果支持了这一结论，该结果表明电解质和电荷转移电阻降低。此外，该材料表现出优异的循环和结构稳定性，进一步验证了对性能的积极影响。此外，已发现掺杂剂掺入材料中可增强 OH− 离子在材料界面上的吸附，从而促进电化学反应。这项研究有助于对 Ag 掺杂 MnTe 的现有认识，并有可能为合成材料开发的未来进展提供信息。