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用于超级电容器的无粘结剂FeO/MWCNT/Al电极

Binder-Free FeO/MWCNT/Al Electrodes for Supercapacitors.

作者信息

Mitina Alena A, Yakimov Evgene E, Knyazev Maxim A, Korotitsky Victor I, Redkin Arkady N

机构信息

Institute of Microelectronics Technology and High-Purity Materials, Russian Academy of Science (IMT RAS), Moscow District, 6 Academian Ossipyan Str., 142432 Chernogolovka, Russia.

出版信息

Nanomaterials (Basel). 2025 Aug 10;15(16):1222. doi: 10.3390/nano15161222.

DOI:10.3390/nano15161222
PMID:40863802
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12388723/
Abstract

This work presents a method for preparing an FeO/MWCNT/Al composite electrode without the use of a binder. Synthesizing the composite material directly on conductive substrates allows one to obtain ready-made supercapacitor electrodes characterized by high values of specific capacity, as well as resistance to numerous charge/discharge cycles. Using an array of multi-walled carbon nanotubes (MWCNTs) as a conductive base for the synthesis of iron oxide allows for the production of a composite material that combines the positive properties of both materials. The FeO/MWCNT/Al composite was formed using electrochemical oxidation of the MWCNT/Al material in a mixture of 0.1 M aqueous solution of Fe(NH)(SO) (iron ammonium sulfate) and 0.08 M CHCOONa (sodium acetate) in a 1:1 ratio. The proposed approaches to fabricating composite electrodes provide excellent performance characteristics, namely high cyclic stability and fast response time. For the first time, an FeO/MWCNT/Al composite was obtained using electrochemical oxidation of Fe on the surface of MWCNTs grown directly on aluminum foil. The specific capacitance of the obtained composite material reaches 175 F/g at a scanning rate of 100 mV/s. The capacity loss during cyclic measurements does not exceed 25% after 10,000 charge/discharge cycles.

摘要

这项工作提出了一种无需使用粘合剂制备FeO/MWCNT/Al复合电极的方法。直接在导电基底上合成复合材料能够得到具有高比电容值以及耐多次充放电循环特性的现成超级电容器电极。使用多壁碳纳米管（MWCNT）阵列作为合成氧化铁的导电基底，可以生产出一种兼具两种材料优良特性的复合材料。FeO/MWCNT/Al复合材料是通过将MWCNT/Al材料在0.1 M的Fe(NH)(SO)（硫酸铁铵）水溶液和0.08 M的CHCOONa（醋酸钠）按1:1比例混合的溶液中进行电化学氧化而形成的。所提出的制备复合电极的方法具有优异的性能特性，即高循环稳定性和快速响应时间。首次通过在直接生长于铝箔上的MWCNT表面对铁进行电化学氧化获得了FeO/MWCNT/Al复合材料。在100 mV/s的扫描速率下，所获得的复合材料的比电容达到175 F/g。在10000次充放电循环后，循环测量期间的容量损失不超过25%。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/83ccf2114568/nanomaterials-15-01222-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/8f2c07ceac5c/nanomaterials-15-01222-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/b3a173e7180a/nanomaterials-15-01222-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/65542ceb363e/nanomaterials-15-01222-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/8744cc9d79db/nanomaterials-15-01222-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/abacdb6a2326/nanomaterials-15-01222-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/44ab413e7e6e/nanomaterials-15-01222-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/94e9913b7983/nanomaterials-15-01222-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/9a6697f8657c/nanomaterials-15-01222-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/83ccf2114568/nanomaterials-15-01222-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/8f2c07ceac5c/nanomaterials-15-01222-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/b3a173e7180a/nanomaterials-15-01222-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/65542ceb363e/nanomaterials-15-01222-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/8744cc9d79db/nanomaterials-15-01222-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/abacdb6a2326/nanomaterials-15-01222-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/44ab413e7e6e/nanomaterials-15-01222-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/94e9913b7983/nanomaterials-15-01222-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/9a6697f8657c/nanomaterials-15-01222-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/85a9/12388723/83ccf2114568/nanomaterials-15-01222-g009.jpg

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本文引用的文献

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FeO/Porous Carbon Composite Derived from Oily Sludge Waste as an Advanced Anode Material for Supercapacitor Application.
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