دورية أكاديمية
أعرض في EDS

Synthesis and Electrochemical Properties of Fe3O4/C Nanocomposites for Symmetric Supercapacitors

التفاصيل البيبلوغرافية
العنوان: Synthesis and Electrochemical Properties of Fe3O4/C Nanocomposites for Symmetric Supercapacitors
المؤلفون: Ihor Bordun, Ewelina Szymczykiewicz
المصدر: Applied Sciences, Vol 14, Iss 2, p 677 (2024)
بيانات النشر: MDPI AG, 2024.
سنة النشر: 2024
المجموعة: LCC:Technology
LCC:Engineering (General). Civil engineering (General)
LCC:Biology (General)
LCC:Physics
LCC:Chemistry
مصطلحات موضوعية: nanocomposite, porous structure, iron chloride, supercapacitor, specific capacitance, Technology, Engineering (General). Civil engineering (General), TA1-2040, Biology (General), QH301-705.5, Physics, QC1-999, Chemistry, QD1-999
الوصف: In the work, nanostructured Fe3O4/C composites based on natural raw materials (beet pulp and corn stalks) are synthesised in various ways. Iron chloride FeCl3 is used as an activator. The synthesised composites are investigated using the following methods, scanning electron microscopy, X-ray diffractometry, nitrogen adsorption/desorption porometry, magnetometry, impedance and galvanostatic measurements. The presence of nanosized Fe3O4 magnetite in the synthesised carbon structures is disclosed. Based on the magnetic measurements, the particle size of Fe3O4 is on average 50 nm for the sample of the composite synthesised from beet pulp in one step, 30 nm for the sample of the composite synthesised from beet pulp in two steps, 33 nm for the composite synthesised from corn stalks in one step, and 29 nm for the composite synthesised from corn stalks in two steps. It is shown that the two-step synthesis using pre-carbonised raw materials gives the specific capacitance of the composite made with beet pulp at 96 F/g, and for the composite made with corn stalks at 95 F/g. The high coulombic efficiency (>95%) and the stability of the electrical capacitance during long-term cycling make it possible to use Fe3O4/C composites for the manufacture of supercapacitor electrodes with aqueous electrolytes.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2076-3417
Relation: https://www.mdpi.com/2076-3417/14/2/677; https://doaj.org/toc/2076-3417
DOI: 10.3390/app14020677
URL الوصول: https://doaj.org/article/f84b94c429e04e2da5d5ccb3d5022ba8
رقم الأكسشن: edsdoj.f84b94c429e04e2da5d5ccb3d5022ba8
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:20763417
DOI:10.3390/app14020677