Synthesis of Nickel-Manganese Spinel Oxide Supported on Carbon-Felt Surface to Enhance Electrochemical Capacitor Performance

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis Pub Date : 2025-02-13 DOI:10.1007/s12678-025-00932-y

Mahmoud A. Hefnawy, Rewaida Abdel-Gaber, Sobhi M. Gomha, Magdi E. A. Zaki, Shymaa S. Medany

{"title":"Synthesis of Nickel-Manganese Spinel Oxide Supported on Carbon-Felt Surface to Enhance Electrochemical Capacitor Performance","authors":"Mahmoud A. Hefnawy, Rewaida Abdel-Gaber, Sobhi M. Gomha, Magdi E. A. Zaki, Shymaa S. Medany","doi":"10.1007/s12678-025-00932-y","DOIUrl":null,"url":null,"abstract":"<div><p>Energy storage has become an essential need for today’s applications. Thus, the development of capacitors and their materials has gotten great attention. In this study, a high mass loading (2 mg cm<sup>−2</sup>) NiMn<sub>2</sub>O<sub>4</sub>/carbon felt (CF-NMO) was fabricated using a hydrothermal process and used as a new material for a pseudo-capacitive electrode having a potential window of 0.65 V. Several analytical techniques were employed to confirm the structure, such as X-ray diffraction (XRD), and X-ray photon spectroscopy (XPS). The spinel oxide distribution and surface morphology were studied using scanning electron microscopy (SEM), and transmitted electron microscopy (TEM). The activity of the modified CF-NMO was investigated in 1.0 M NaOH. The prepared electrode reached a capacitance of 301 F g<sup>−1</sup> at the current density of 1 mA g<sup>−1</sup>. Furthermore, the electrode’s durability was investigated for 2000 cycles at 5 mA g<sup>−1</sup>, and the provided capacitance retention was ~ 85% compared to the 1st cycle. Also, the rate capability was estimated to be 69% in the current range from 1 to 5 mA cm<sup>−2</sup>.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"16 3","pages":"500 - 512"},"PeriodicalIF":2.7000,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrocatalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s12678-025-00932-y","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Energy storage has become an essential need for today’s applications. Thus, the development of capacitors and their materials has gotten great attention. In this study, a high mass loading (2 mg cm⁻²) NiMn₂O₄/carbon felt (CF-NMO) was fabricated using a hydrothermal process and used as a new material for a pseudo-capacitive electrode having a potential window of 0.65 V. Several analytical techniques were employed to confirm the structure, such as X-ray diffraction (XRD), and X-ray photon spectroscopy (XPS). The spinel oxide distribution and surface morphology were studied using scanning electron microscopy (SEM), and transmitted electron microscopy (TEM). The activity of the modified CF-NMO was investigated in 1.0 M NaOH. The prepared electrode reached a capacitance of 301 F g⁻¹ at the current density of 1 mA g⁻¹. Furthermore, the electrode’s durability was investigated for 2000 cycles at 5 mA g⁻¹, and the provided capacitance retention was ~ 85% compared to the 1st cycle. Also, the rate capability was estimated to be 69% in the current range from 1 to 5 mA cm⁻².

Graphical Abstract

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Electrocatalysis CHEMISTRY, PHYSICAL-ELECTROCHEMISTRY

CiteScore

4.80

自引率

6.50%

发文量

审稿时长

>12 weeks

期刊介绍： Electrocatalysis is cross-disciplinary in nature, and attracts the interest of chemists, physicists, biochemists, surface and materials scientists, and engineers. Electrocatalysis provides the unique international forum solely dedicated to the exchange of novel ideas in electrocatalysis for academic, government, and industrial researchers. Quick publication of new results, concepts, and inventions made involving Electrocatalysis stimulates scientific discoveries and breakthroughs, promotes the scientific and engineering concepts that are critical to the development of novel electrochemical technologies. Electrocatalysis publishes original submissions in the form of letters, research papers, review articles, book reviews, and educational papers. Letters are preliminary reports that communicate new and important findings. Regular research papers are complete reports of new results, and their analysis and discussion. Review articles critically and constructively examine development in areas of electrocatalysis that are of broad interest and importance. Educational papers discuss important concepts whose understanding is vital to advances in theoretical and experimental aspects of electrochemical reactions.