Synthesis and characterizations of Al-doped nickel cobalt oxide nanoparticles with superior electrochemical performance for supercapacitor applications

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-06-14 DOI:10.1016/j.mseb.2025.118508

K. Kowsuki, R. Navamathavan

{"title":"Synthesis and characterizations of Al-doped nickel cobalt oxide nanoparticles with superior electrochemical performance for supercapacitor applications","authors":"K. Kowsuki, R. Navamathavan","doi":"10.1016/j.mseb.2025.118508","DOIUrl":null,"url":null,"abstract":"<div><div>This work investigates the capacitive characteristics of Al-doped nickel cobalt oxide (NiCo2O4) nanoparticles by doping them with aluminium at different concentrations (20 mol%, 25 mol%, and 30 mol%) via a hydrothermal technique. The systematic characterizations have been performed. The electrochemical tests are performed to examine the capacitive characteristics. Al-doped NiCo2O4 demonstrated a significant O<img>H adsorption capacity for redox processes. With 1 Ag−1 current density, a 25 mol% Al-doped NiCo2O4 electrode presented the highest specific capacitance of 1318 Fg−1 compared to NiCo2O4 and 20 mol%, 30 mol% of ANCO. The Al-doped NiCo2O4@NF//AC in two electrodes displayed exceptional cycling stability over 2500 charge–discharge cycles, retention of 85.13 % of its capacitance at 20 Ag−1. A constructed asymmetric supercapacitor exhibited an outstanding energy density of 18.67 Wh kg−1 at a power density of 2621 Wkg−1. Based on our findings, the 25 mol% Al-doped NiCo2O4 exhibited exceptional potential for the application of energy storage systems.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"321 ","pages":"Article 118508"},"PeriodicalIF":3.9000,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Science and Engineering: B","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S092151072500532X","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

This work investigates the capacitive characteristics of Al-doped nickel cobalt oxide (NiCo₂O₄) nanoparticles by doping them with aluminium at different concentrations (20 mol%, 25 mol%, and 30 mol%) via a hydrothermal technique. The systematic characterizations have been performed. The electrochemical tests are performed to examine the capacitive characteristics. Al-doped NiCo₂O₄ demonstrated a significant OH adsorption capacity for redox processes. With 1 Ag⁻¹ current density, a 25 mol% Al-doped NiCo₂O₄ electrode presented the highest specific capacitance of 1318 Fg⁻¹ compared to NiCo₂O₄ and 20 mol%, 30 mol% of ANCO. The Al-doped NiCo₂O₄@NF//AC in two electrodes displayed exceptional cycling stability over 2500 charge–discharge cycles, retention of 85.13 % of its capacitance at 20 Ag⁻¹. A constructed asymmetric supercapacitor exhibited an outstanding energy density of 18.67 Wh kg⁻¹ at a power density of 2621 Wkg⁻¹. Based on our findings, the 25 mol% Al-doped NiCo₂O₄ exhibited exceptional potential for the application of energy storage systems.

查看原文本刊更多论文

具有优异电化学性能的铝掺杂镍钴氧化物纳米颗粒的合成与表征

本研究通过水热技术研究了铝掺杂镍钴氧化物（NiCo2O4）纳米颗粒的电容特性，并将其与不同浓度的铝（20 mol%， 25 mol%和30 mol%）掺杂。已经进行了系统的表征。通过电化学试验来检验电容特性。al掺杂NiCo2O4在氧化还原过程中表现出显著的OH吸附能力。在1 Ag−1电流密度下，与NiCo2O4和20 mol%、30 mol%的ANCO相比，掺25 mol% al的NiCo2O4电极的比电容最高，为1318 Fg−1。在两个电极中掺杂al的NiCo2O4@NF//AC在2500次充放电循环中表现出优异的循环稳定性，在20ag−1时保持了85.13%的电容。在2621 Wkg - 1的功率密度下，非对称超级电容器的能量密度达到18.67 Wh kg - 1。基于我们的研究结果，25 mol% al掺杂的NiCo2O4在储能系统中表现出了非凡的应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.