Nitrogen, Sulfur, Phosphorous Co‐doped Interconnected Porous Carbon Nanosheets with High Defect Density for Enhancing Supercapacitor and Lithium‐Ion Battery Properties,ChemElectroChem

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Nitrogen, Sulfur, Phosphorous Co‐doped Interconnected Porous Carbon Nanosheets with High Defect Density for Enhancing Supercapacitor and Lithium‐Ion Battery Properties
ChemElectroChem ( IF 3.5 ) Pub Date : 2018-06-11 , DOI: 10.1002/celc.201800444
Hanwei Wang ₁ , Chao Wang ₁ , Baokang Dang ₁ , Ye Xiong ₁ , Chunde Jin ₁ , Qingfeng Sun ₁ , Min Xu ₂

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Porous carbon nanosheets with open 2D nanostructure have been considered a desirable and high‐efficient energy‐storage material. Herein, N, S, P co‐doped interconnected porous carbon nanosheets (CPCNs) with high defect density and open 2D ultrathin nanostructure are prepared by using a cork‐shaped soybean aerogel as carbon source. A reasonable design of the preparation technology controls the formation of the distinctive and ordered structure of intermediates during the synthetic process. The as‐prepared CPCN material is made of interconnected nanosheets with a thickness of 4.9 nm and have a maximum N‐dopant content of 5.83 at. % and a high specific surface area of 3586 m² g⁻¹. Due to the synergistic effects of the features, the CPCN electrode for supercapacitors has a high capacitance of 427 F g⁻¹ with a long cycling stability of 97.42 % after 10 000 cycles. For lithium‐ion batteries, the CPCN material also exhibits an excellent capacity of 1220 mAh g⁻¹ at 100 mA g⁻¹ with a high rate capability and cycling stability. Moreover, a scenario through using CPCN to enhance the electrochemical performance of nano‐inorganic material proves a high scalability in the application for the products.

中文翻译：

具有高缺陷密度的氮，硫，磷共掺杂互连互连多孔碳纳米片，可增强超级电容器和锂离子电池的性能

具有开放二维纳米结构的多孔碳纳米片被认为是一种理想且高效的储能材料。在此，以软木塞状大豆气凝胶为碳源，制备了具有高缺陷密度和开放二维超薄纳米结构的N，S，P共掺杂的互连多孔碳纳米片（CPCN）。合理的制备工艺设计可控制合成过程中中间体独特而有序的结构。所制备的CPCN材料由互连的纳米片制成，其厚度为4.9 nm，最大N掺杂物含量为5.83 at。％和3586 m ² g ^-1的高比表面积。由于这些特征的协同作用，超级电容器的CPCN电极具有427 F g ^-1的高电容，在1万次循环后具有97.42％的长循环稳定性。对于锂离子电池，CPCN材料在100 mA g ^-1下还具有1220 mAh g ^-1的出色容量，并具有高倍率能力和循环稳定性。此外，通过使用CPCN增强纳米无机材料的电化学性能的场景证明了该产品在应用中具有很高的可扩展性。

更新日期：2018-06-11

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