دورية أكاديمية
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Sustainable Cellulose Nanofibers-Mediated Synthesis of Uniform Spinel Zn-Ferrites Nanocorals for High Performances in Supercapacitors.

التفاصيل البيبلوغرافية
العنوان: Sustainable Cellulose Nanofibers-Mediated Synthesis of Uniform Spinel Zn-Ferrites Nanocorals for High Performances in Supercapacitors.
المؤلفون: Teixeira LT; Departamento de Engenharia Química e de Materiais-DEQM, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro 22451-040, RJ, Brazil., de Lima SLS; Departamento de Engenharia Química e de Materiais-DEQM, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro 22451-040, RJ, Brazil., Rosado TF; Departamento de Engenharia Química e de Materiais-DEQM, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro 22451-040, RJ, Brazil., Liu L; Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro 22290-180, RJ, Brazil., Vitorino HA; Centro de Investigación en Biodiversidad para la Salud, Universidad Privada Norbert Wiener, Lima 15046, Peru., Dos Santos CC; Departamento de Física, Centro de Ciências Exatas e Tecnologia, Universidade Federal do Maranhão, São Luís 65080-805, MA, Brazil., Mendonça JP; Departamento de Química, Centro de Ciências Exatas e Tecnologia, Universidade Federal do Maranhão, São Luís 65080-805, MA, Brazil., Garcia MAS; Departamento de Química, Centro de Ciências Exatas e Tecnologia, Universidade Federal do Maranhão, São Luís 65080-805, MA, Brazil., Siqueira RNC; Departamento de Engenharia Química e de Materiais-DEQM, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro 22451-040, RJ, Brazil., da Silva AGM; Departamento de Engenharia Química e de Materiais-DEQM, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro 22451-040, RJ, Brazil.
المصدر: International journal of molecular sciences [Int J Mol Sci] 2023 May 24; Vol. 24 (11). Date of Electronic Publication: 2023 May 24.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: MDPI Country of Publication: Switzerland NLM ID: 101092791 Publication Model: Electronic Cited Medium: Internet ISSN: 1422-0067 (Electronic) Linking ISSN: 14220067 NLM ISO Abbreviation: Int J Mol Sci Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Basel, Switzerland : MDPI, [2000-
مواضيع طبية MeSH: Nanofibers*, Cellulose ; Zinc
مستخلص: Spinel ferrites are versatile, low-cost, and abundant metal oxides with remarkable electronic and magnetic properties, which find several applications. Among them, they have been considered part of the next generation of electrochemical energy storage materials due to their variable oxidation states, low environmental toxicity, and possible synthesis through simple green chemical processing. However, most traditional procedures lead to the formation of poorly controlled materials (in terms of size, shape, composition, and/or crystalline structure). Thus, we report herein a cellulose nanofibers-mediated green procedure to prepare controlled highly porous nanocorals comprised of spinel Zn-ferrites. Then, they presented remarkable applications as electrodes in supercapacitors, which were thoroughly and critically discussed. The spinel Zn-ferrites nanocorals supercapacitor showed a much higher maximum specific capacitance (2031.81 F g -1 at a current density of 1 A g -1 ) than Fe 2 O 3 and ZnO counterparts prepared by a similar approach (189.74 and 24.39 F g -1 at a current density of 1 A g -1 ). Its cyclic stability was also scrutinized via galvanostatic charging/discharging and electrochemical impedance spectroscopy, indicating excellent long-term stability. In addition, we manufactured an asymmetric supercapacitor device, which offered a high energy density value of 18.1 Wh kg -1 at a power density of 2609.2 W kg -1 (at 1 A g -1 in 2.0 mol L -1 KOH electrolyte). Based on our findings, we believe that higher performances observed for spinel Zn-ferrites nanocorals could be explained by their unique crystal structure and electronic configuration based on crystal field stabilization energy, which provides an electrostatic repulsion between the d electrons and the p orbitals of the surrounding oxygen anions, creating a level of energy that determines their final supercapacitance then evidenced, which is a very interesting property that could be explored for the production of clean energy storage devices.
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معلومات مُعتمدة: 001 Fundação de Amparo à Pesquisa e ao Desenvolvimento Científico e Tecnológico do Maranhão; 001 Coordenação de Aperfeicoamento de Pessoal de Nível Superior; E-26/201.315/2021 Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro; 308322/2022-3 National Council for Scientific and Technological Development
فهرسة مساهمة: Keywords: Zn-ferrites; controlled nanomaterials; nanocorals; supercapacitors
المشرفين على المادة: 0 (spinell)
1317-54-0 (ferrite)
9004-34-6 (Cellulose)
J41CSQ7QDS (Zinc)
تواريخ الأحداث: Date Created: 20230610 Date Completed: 20230612 Latest Revision: 20230612
رمز التحديث: 20231215
مُعرف محوري في PubMed: PMC10252955
DOI: 10.3390/ijms24119169
PMID: 37298121
قاعدة البيانات: MEDLINE
الوصف
تدمد:1422-0067
DOI:10.3390/ijms24119169