Co3(HCOO)6@rGO 作为锂离子电池负极材料的研究

doi:10.13208/j.electrochem.170412

电化学（中英文） ›› 2018, Vol. 24 ›› Issue (3): 207-215. doi: 10.13208/j.electrochem.170412

Co₃(HCOO)₆@rGO 作为锂离子电池负极材料的研究

江恒, 范镜敏，郑明森^*, 董全峰^*

厦门大学固体表面物理化学国家重点实验室，厦门大学化学化工学院化学系，能源材料协同创新中心，福建厦门 361005

收稿日期:2017-04-12 修回日期:2017-06-07 出版日期:2018-06-28 发布日期:2017-06-19
通讯作者: 郑明森，董全峰 E-mail:qfdong@xmu.edu.cn，mszheng@xmu.edu.cn
基金资助:
973 项目(No. 2015CB251102)和国家自然科学基金项目(No. U1305246，No. 21673196，No. 21621091)资助

Co₃(HCOO)₆@rGO as a Promising Anode for Lithium Ion Batteries

JIANG Heng, FAN Jing-min, ZHENG Ming-sen^*, DONG Quan-feng^*

State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, iChem (Collaborative Innovation Center of Chemistry for Energy Materials), Xiamen University, Xiamen 361005, China

Received:2017-04-12 Revised:2017-06-07 Published:2018-06-28 Online:2017-06-19
Contact: ZHENG Ming-sen, DONG Quan-feng E-mail:qfdong@xmu.edu.cn，mszheng@xmu.edu.cn

摘要/Abstract

摘要： MOFs材料作为一类新型的锂离子电池电极材料而受到广泛关注和研究. 作者通过溶液扩散法将Co₃(HCOO)₆原位负载在 rGO（还原氧化石墨烯）上制备出Co₃(HCOO)₆@rGO复合材料. 将Co₃(HCOO)₆@rGO作为锂离子电池负极材料，以500 mA·g^-1的电流密度恒电流充放电循环 100 周后，仍然保持有 926 mAh·g^-1的比容量，亦表现出很好的倍率性能. 循环伏安和X-射线光电子能谱测试表明，Co₃(HCOO)₆@rGO材料上的Co²⁺和甲酸根在充放电过程中均发生可逆的电化学反应. 对比同样采用溶液扩散法合成的 Co₃(HCOO)₆的测试结果发现，rGO起到活化甲酸根的电化学反应的作用，同时也改善了Co₃(HCOO)₆的倍率性能. 将MOFs材料与rGO复合为优化 MOFs 材料的电池性能提供了一个新思路.

关键词: Co₃(HCOO)₆@rGO, Co₃(HCOO)₆, 甲酸根, 负极, 锂离子电池

Abstract: Metal–organic framework(MOF) is a kind of novel electrode materials for lithium ion batteries. Here, a composite material Co₃(HCOO)₆@rGO was synthesized for the first time by in situ loading of Co₃(HCOO)₆ on rGO (reduced oxide graphene) through a solution chemistry method. As an anode material for lithium ion batteries, it exhibited an excellent cycle stability as well as a large reversible capacity of 926 mAh·g^-1 at a current density of 500 mA·g^-1 after 100 cycles within the voltage range of 0.02 ~ 3.0 V vs. Li/Li⁺with a good rate capability. The results of cyclic voltammetry and XPS measurements revealed that both Co²⁺ and formate ions in Co₃(HCOO)₆@rGO uderwent reversible electrochemical reactions during the charge and discharge process. Compared with Co₃(HCOO)₆ synthesized through the same method, it was found that rGO could activate the electrochemical reaction of formate ion, which improved the Co₃(HCOO)₆ rate performance.A new route was demonstrated through this work to enhance the specific capacity and rate capability of MOFs by introducing rGO.

Key words: Co₃(HCOO)₆@rGO; Co₃(HCOO)₆, formate ion, anode, lithium ion batteries

中图分类号:

O646

江恒, 范镜敏，郑明森，董全峰. Co₃(HCOO)₆@rGO 作为锂离子电池负极材料的研究[J]. 电化学（中英文）, 2018, 24(3): 207-215.

JIANG Heng, FAN Jing-min, ZHENG Ming-sen, DONG Quan-feng. Co₃(HCOO)₆@rGO as a Promising Anode for Lithium Ion Batteries[J]. Journal of Electrochemistry, 2018, 24(3): 207-215.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.13208/j.electrochem.170412

https://electrochem.xmu.edu.cn/CN/Y2018/V24/I3/207

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Co₃(HCOO)₆@rGO 作为锂离子电池负极材料的研究

Co₃(HCOO)₆@rGO as a Promising Anode for Lithium Ion Batteries

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