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首页> 外文期刊>RSC Advances >Use of a diatomite template to prepare a MoS2/amorphous carbon composite and exploration of its electrochemical properties as a supercapacitor
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Use of a diatomite template to prepare a MoS2/amorphous carbon composite and exploration of its electrochemical properties as a supercapacitor

机译：使用硅藻土模板制备MoS2 /非晶碳复合材料并探索其作为超级电容器的电化学性能

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A MoS _(2) /amorphous carbon composite was prepared using diatomite as a template and ammonium thiomolybdate/sucrose as starting materials. The composite perfectly inherits the template morphology with a porous structure, in which MoS _(2) possesses a structure with several layers, and amorphous carbon is partially inserted into the interlayer spaces of the MoS _(2) , inhibiting the restacking of the MoS _(2) nanosheets along the (002) plane. The interlaminar distance of the adjacent MoS _(2) nanosheets in the composite is 1.03 nm, which is approximately twice that between adjacent MoS _(2) and carbon layers. The supercapacitor utilizing this composite exhibits a high specific capacitance, 167.3 F g ~(?1) at the current density of 0.5 A g ~(?1) and high rate capability, 96.4 F g ~(?1) at 10 A g ~(?1) . Moreover, the capacitance retention is maintained at 93.2% after 1000 cycles, indicating excellent cycling stability. In contrast, the capacities of pure AC and MoS _(2) are much lower, and also the cyclability of MoS _(2) . The overall improvement in electrochemical performance could be ascribed to the unique microstructure and the close combination of MoS _(2) and amorphous carbon.
机译：以硅藻土为模板，以硫代钼酸铵/蔗糖为原料，制备了MoS_（2）/非晶态碳复合材料。复合材料完美地继承了具有多孔结构的模板形态，其中MoS _（2）具有多层结构，无定形碳部分插入MoS _（2）的层间空间，从而抑制了MoS的重新堆积沿着（002）平面的_（2）个纳米片。复合材料中相邻MoS_（2）纳米片的层间距离为1.03 nm，大约是相邻MoS_（2）和碳层之间的层间距离。利用这种复合材料的超级电容器在0.5 A g〜（？1）的电流密度下具有167.3 F g〜（？1）的高比电容，在10 A g〜的情况下具有96.4 F g〜（？1）的高倍率能力。 （？1）。此外，在1000次循环后，电容保持率保持在93.2％，表明出色的循环稳定性。相比之下，纯AC和MoS _（2）的容量要低得多，MoS _（2）的循环性也要低得多。电化学性能的整体改善可归因于独特的微观结构以及MoS_（2）和无定形碳的紧密结合。

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