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高明珠, 王泽, 张晓腾, 等. 杂化钙钛矿−沥青衍生碳复合材料制备及性能J. 桂林电子科技大学学报, 2025, 45(5): 505-510. DOI: 10.16725/j.1673-808X.2023146
引用本文: 高明珠, 王泽, 张晓腾, 等. 杂化钙钛矿−沥青衍生碳复合材料制备及性能J. 桂林电子科技大学学报, 2025, 45(5): 505-510. DOI: 10.16725/j.1673-808X.2023146
GAO Mingzhu, WANG Ze, ZHANG Xiaoteng, et al. Preparation and properties of hybrid perovskite-pitch derived carbon compositesJ. Journal of Guilin University of Electronic Technology, 2025, 45(5): 505-510. DOI: 10.16725/j.1673-808X.2023146
Citation: GAO Mingzhu, WANG Ze, ZHANG Xiaoteng, et al. Preparation and properties of hybrid perovskite-pitch derived carbon compositesJ. Journal of Guilin University of Electronic Technology, 2025, 45(5): 505-510. DOI: 10.16725/j.1673-808X.2023146

杂化钙钛矿−沥青衍生碳复合材料制备及性能

Preparation and properties of hybrid perovskite-pitch derived carbon composites

  • 摘要: 沥青芳烃分子间强的π—π键相互作用可使沥青直接碳化时,易形成石墨化程度高的软碳,但窄的碳层间距和贫乏的孔结构导致其储钠容量较低。针对沥青衍生碳材料层间距窄和孔结构少导致储钠容量低的问题,采用杂化钙钛矿与煤沥青共混碳化制备碳复合材料。利用杂化钙钛矿对沥青的催化作用以及杂化钙钛矿衍生的合金纳米颗粒的储钠能力来提升碳复合材料的电化学性能。研究了杂化钙钛矿类型、前驱体的比例对碳复合材料的微观结构与储钠性能的影响。用于钠离子电池负极时,储钠容量得到有效提升,碳复合材料的可逆容量达173.2 mAh·g−1,100个循环后容量保持率为85%。此种杂化钙钛矿−煤沥青衍生碳复合材料为沥青碳材料的改性制备提供了一种新策略。

     

    Abstract: The strong π—π bond interactions between aromatic molecules in asphalt can lead to the formation of a high degree of graphitization of soft carbon when asphalt is directly carbonized. However, the narrow carbon interlayer spacing and poor pore structure result in low sodium storage capacity. To address the problem of low sodium storage capacity caused by narrow interlayer spacing and few pore structures in asphalt derived carbon materials, hybrid perovskite and coal tar pitch are blended and carbonized to prepare carbon composite materials. The catalytic effect of hybrid perovskite on asphalt and the sodium storage capacity of alloy nanoparticles derived from hybrid perovskite are utilized to enhance the electrochemical performance of carbon composite materials. The influences of hybrid perovskite type and precursor ratio on the microstructure and sodium storage performance are investigated. When used as the negative electrode of sodium-ion batteries, the sodium storage capacity is effectively improved, and the carbon composite material exhibits a reversible capacity of 173.2 mAh·g−1, with a capacity retention rate of 85% after 100 cycles. This hybrid perovskite/pitch derived carbon composite material provides a new strategy for preparing asphalt carbon materials.

     

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