| 大碳层间距的沥青基多级孔碳材料的制备及其在超级电容器中的应用 | |
| Synthesis of Multi-stage Pore Carbon Material with Large Spacing of Carbon Layers from Asphalt for Supercapacitors | |
| 摘要: 基于KOH活化法，以纳米级片层多孔MgO为模板剂，制备大碳层间距的沥青基超级电容器用多级孔碳材料。考察了模板剂添加量对多孔碳材料孔分布、碳层间距等理化性能及电化学性能的影响。结果表明模板剂添加量为沥青质量的25%时，多孔碳材料比表面积、孔体积分别为2 634 m2·g-1、1.12 cm3·g-1，碳层间距高达0.374 nm，用于超级电容器电极材料时，1和20 A·g-1电流密度下的比电容分别为338和277 F·g-1，经过10 000次循环恒电流充放电，1 A·g-1下容量保持率为93.5%，展现了优异的电化学性能。 | |
| 关键词: 模板剂法 碳层间距 片层多孔MgO 比容量 超级电容器 | |
| 基金项目: 中国石油化工股份有限公司项目（No.120016）资助。 | |
| Abstract: Based on the nanoscale lamellar porous MgO as template, a facile method of petroleum pitch via in-situ KOH activation was designed to obtain multi-stage pore carbon material with large spacing or carbon layers. Meanwhile, the effect of the amount of template on the physicochemical and chemical properties of porous carbon materials, such as pore distribution, carbon layer spacing and electrochemical properties were investigated. The results showed that the specific surface area and pore volume of the carbon material were 2 634 m2·g-1, 1.12 cm3·g-1 respectively. What's more, the spacing of carbon layers was 0.374 nm, when the dosage of template was 25% of the quality of asphalt. As electrodes for supercapacitors, 338 F·g-1 at 1 A·g-1, 277 F·g-1 at 20 A·g-1, and superior cycle stability with 93.5% capacitance retention at 1 A·g-1 after 10 000 cycles in 6 mol·L-1 KOH electrolyte, demonstrating excellent electrochemical performance. | |
| Keywords: template method spacing of carbon layers lamellar porous MgO specific capacity supercapacitor | |
| 投稿时间：2021-02-03 修订日期：2021-04-23 | |
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| 雷杰,王韬翔,李治,陈辉,杨松,韩海波,李康.大碳层间距的沥青基多级孔碳材料的制备及其在超级电容器中的应用[J].无机化学学报,2021,37(7):1218-1226. | |
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