珊瑚状镍钴双金属氧化物掺杂碳纳米杂化材料的电化学性能

兰州理工大学学报 ›› 2024, Vol. 50 ›› Issue (6): 17-27.

珊瑚状镍钴双金属氧化物掺杂碳纳米杂化材料的电化学性能

马应霞^*1,2, 雷磊^1,2, 刘冰璐^1,2, 康小雅^1,2, 冉奋^1,2

1.兰州理工大学材料科学与工程学院, 甘肃兰州 730050;
2.兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室, 甘肃兰州 730050

收稿日期:2023-11-21 出版日期:2024-12-28 发布日期:2025-01-13
通讯作者: 马应霞(1974-),女,甘肃白银人,博士,教授.Email:mayx2011818@163.com
基金资助:
国家自然科学基金(51763014,52073133)

Electrochemical properties of coral-like nickel-cobalt bimetallic oxide-doped carbon nanohybrid materials

MA Ying-xia^1,2, LEI Lei^1,2, LIU Bing-lu^1,2, KANG Xiao-ya^1,2, RAN Fen^1,2

1. School of Materials Science and Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China;
2. State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou Univ. of Tech., Lanzhou 730050, China

Received:2023-11-21 Online:2024-12-28 Published:2025-01-13

摘要/Abstract

摘要： 金属有机框架材料(MOFs)由于具有大的比表面积、可调节的孔径和丰富的氧化还原位点,作为超级电容器电极材料受到了广泛关注.但是,MOFs较低的比电容限制了其进一步应用.以Ni (NO₃)₂·6H₂O、Co (NO₃)₂·6H₂O为金属离子源,对苯二甲酸为有机配体,通过水热法合成了三维(3D)刺柏状Ni/Co-MOF为前驱体,在空气气氛中通过调控其热处理温度和恒温时间,制备了一系列珊瑚状镍钴双金属氧化物掺杂碳纳米杂化材料(NCPO/C),并研究了其作为超级电容器电极材料的电化学性能.结果表明:将3D刺柏状Ni/Co-MOF前驱体在空气氛围加热至280 ℃、保温1 h后得到的珊瑚状NCPO/C样品作为电极材料的电化学性能最佳.当电流密度从0.5 A·g^－1扩大到5.0 A·g^－1时,NCPO/C的比电容从852.5 C·g^－1减小到720.0 C·g^－1,其比电容的保持率为84.5%.

关键词: 金属有机框架材料, 金属氧化物, 超级电容器, 电极材料, 电化学性能

Abstract: Metal-organic frameworks (MOFs) have received attention as supercapacitor electrode materials due to their large specific surface area, adjustable pore size and abundant redox sites. However, the specific capacitance of MOFs limits their further application. In this paper, employing three-dimensional (3D) spiny cypress-like Ni/Co-MOF as precursors obtained by hydrothermal method using Ni (NO₃)₂·6H₂O and Co (NO₃)₂·6H₂O as the metal ion sources and terephthalic acid as the organic ligand, a series of coral-like nickel-cobalt bimetallic oxide-doped carbon nanohybrid materials (NCPO/C) were prepared in an air atmosphere by regulatingthe heat treatment temperature and isothermal time, and their electrochemical properties as supercapacitor electrode materials were investigated. The results showed that the coral-like NCPO/C sample obtained byheating the 3D spiny cypress-like Ni/Co-MOF precursor at 280 ℃ for 1 h in air atmosphere, has the best electrochemical performance as electrode materials. When the current density expand from 0.5 A·g^－1 to 5.0 A·g^－1, the specific capacitance of NCPO/C decrease from 852.5 C·g^－1 to 720.0 C·g^－1, and the capacitance retention 84.5%.

Key words: metal-organic framework materials, metal oxides, supercapacitors, electrode materials, electrochemical performance

中图分类号:

O646

马应霞, 雷磊, 刘冰璐, 康小雅, 冉奋. 珊瑚状镍钴双金属氧化物掺杂碳纳米杂化材料的电化学性能[J]. 兰州理工大学学报, 2024, 50(6): 17-27.

MA Ying-xia, LEI Lei, LIU Bing-lu, KANG Xiao-ya, RAN Fen. Electrochemical properties of coral-like nickel-cobalt bimetallic oxide-doped carbon nanohybrid materials[J]. Journal of Lanzhou University of Technology, 2024, 50(6): 17-27.

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