| 摘要: |
| 有机分子具有结构可设计、理论比容量高的优点,在锂离子电池负极材料领域具有潜在的应用价值,但由于其具有易溶解和循环稳定性差等缺点,电池性能表现不佳. 有机分子中六苯并蔻（HBC）具有高稳定性,而1,4-苯醌（BQ）具有高比容量,选择把这两种分子复合作为新的有机负极材料,并对其在锂离子电池中的表现进行了全面的对比测试. 结果表明：复合后的材料兼具HBC的稳定性与BQ的高比容量,并且有清晰的充放电平台,尤其是以物质的量之比为1∶6复合的材料,在200 mA·g-1的电流密度下循环300圈后,仍保持330.9 mAh·g-1的比容量,库伦效率高达99.51%. 此研究为有机负极材料的设计与应用提供了新思路. |
| 关键词: 六苯并蔻（HBC） 有机负极材料 锂离子电池 新型能源材料 |
| DOI：10.20192/j.cnki.JSHNU(NS).2025.01.005 |
| 分类号:O625.15 |
| 基金项目:上海市自然科学基金（22ZR1445900）；国家自然科学基金青年基金（22305156）；国家自然科学基金面上项目（21772123）；上海绿色能源化工工程技术研究中心项目（18DZ2254200）；光化学能源材料学科创新引智基地项目（D18020）；上海市部分地方院校能力建设专项（21010503400） |
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| Cycling performance of hexabenzocoronene-based anode materials for lithium-ion batteries |
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WANG Xinqian, YANG Lei, ZHU Xin, XU Jingjing, XIAO Shengxiong
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College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
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| Abstract: |
| Organic molecules have the advantages of designable structure and high theoretical specific capacity, which have potential applications in the field of anode materials for lithium-ion batteries, but they perform poorly due to their ease of dissolution and poor cycling stability. As organic molecules, hexabenzocoronene（HBC） has superior stability and 1,4-benzoquinone （BQ） has high specific capacity. We chose to combine these two molecules as a new organic anode material, and carried out a comprehensive comparative test on its performance in lithium-ion batteries. The results show that the composite material combines the stability of HBC with the high specific capacity of BQ and has a clear charging/discharging platform. Especially, the composite material with a molar ratio of 1∶6 maintains a specific capacity of 330.9 mAh·g-1 with a Coulombic efficiency as high as 99.51% after cycling for 300 cycles at a current density of 200 mA·g-1. This study provides a new insight for the design and application of organic anode materials. |
| Key words: contorted hexabenzocoronene （HBC） organic anode material lithium-ion batteries novel energy materials |
