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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
RSC Advances ( IF 3.9 ) Pub Date : 2018-10-18 00:00:00 , DOI: 10.1039/c8ra07062h Yang Yang 1 , Aijun Li 1, 2 , Xi Cao 3 , Fangfang Liu 1 , Siyu Cheng 1 , Xiuyun Chuan 1
RSC Advances ( IF 3.9 ) Pub Date : 2018-10-18 00:00:00 , DOI: 10.1039/c8ra07062h Yang Yang 1 , Aijun Li 1, 2 , Xi Cao 3 , Fangfang Liu 1 , Siyu Cheng 1 , Xiuyun Chuan 1
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A MoS2/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 MoS2 possesses a structure with several layers, and amorphous carbon is partially inserted into the interlayer spaces of the MoS2, inhibiting the restacking of the MoS2 nanosheets along the (002) plane. The interlaminar distance of the adjacent MoS2 nanosheets in the composite is 1.03 nm, which is approximately twice that between adjacent MoS2 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 MoS2 are much lower, and also the cyclability of MoS2. The overall improvement in electrochemical performance could be ascribed to the unique microstructure and the close combination of MoS2 and amorphous carbon.
中文翻译：
硅藻土模板制备MoS2/非晶碳复合材料及其作为超级电容器电化学性能的探索
以硅藻土为模板，硫代钼酸铵/蔗糖为起始材料，制备了MoS 2 /无定形碳复合材料。该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，无定形碳部分插入到MoS 2 的层间空间中，抑制了MoS 2纳米片沿（002 ）的重新堆叠。 ） 飞机。复合材料中相邻MoS 2纳米片的层间距为1.03 nm，约为相邻MoS 2和碳层之间的两倍。使用这种复合材料的超级电容器表现出高比电容，167.3 F g-1在 0.5 A g -1的电流密度和高倍率性能，96.4 F g -1在 10 A g -1。此外，1000次循环后电容保持率保持在93.2%，表明循环稳定性极佳。相比之下，纯AC和MoS 2的容量要低得多，MoS 2的循环性也差很多。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。
更新日期：2018-10-18
中文翻译：
硅藻土模板制备MoS2/非晶碳复合材料及其作为超级电容器电化学性能的探索
以硅藻土为模板，硫代钼酸铵/蔗糖为起始材料，制备了MoS 2 /无定形碳复合材料。该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，无定形碳部分插入到MoS 2 的层间空间中，抑制了MoS 2纳米片沿（002 ）的重新堆叠。 ） 飞机。复合材料中相邻MoS 2纳米片的层间距为1.03 nm，约为相邻MoS 2和碳层之间的两倍。使用这种复合材料的超级电容器表现出高比电容，167.3 F g-1在 0.5 A g -1的电流密度和高倍率性能，96.4 F g -1在 10 A g -1。此外，1000次循环后电容保持率保持在93.2%，表明循环稳定性极佳。相比之下，纯AC和MoS 2的容量要低得多，MoS 2的循环性也差很多。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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