基于六苯并蔻的负极材料在锂离子电池中的循环性能表现  

Cycling performance of hexabenzocoronene-based anode materials for lithium-ion batteries

作　　者：王心倩 杨磊 朱欣 徐京京 肖胜雄 WANG Xinqian;YANG Lei;ZHU Xin;XU Jingjing;XIAO Shengxiong(College of Chemistry and Materials Science,Shanghai Normal University,Shanghai 200234,China)

机构地区：[1]上海师范大学化学与材料科学学院,上海200234

出　　处：《上海师范大学学报(自然科学版中英文)》2025年第1期36-42,共7页Journal of Shanghai Normal University(Natural Sciences)

基　　金：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)。

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.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.

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 

分 类 号：O625.15[理学—有机化学]