R. Shejini , V. Sabarinathan , K. Sethuraman , K. Mohanraj , J. Henry , G. Sivakumar
{"title":"Hydrothermally prepared Ag2MoO4 nanoparticles anchored on nitrogen doped rGO for asymmetric supercapacitor application","authors":"R. Shejini , V. Sabarinathan , K. Sethuraman , K. Mohanraj , J. Henry , G. Sivakumar","doi":"10.1016/j.chphi.2025.100863","DOIUrl":null,"url":null,"abstract":"<div><div>The energy density and the specific capacitance are two important parameters for improving energy storage devices. In this study, we introduce the novel incorporation of nitrogen-doped reduced graphene oxide (NRGO) into Ag<sub>2</sub>MoO<sub>4</sub> nanoparticles, for use in asymmetric supercapacitor applications. The synthesized compounds were confirmed and characterized using structural, functional, nitrogen adsorption-desorption, surface, elemental analyses, and electrochemical properties. Here, the AMO<img>NRGO composite materials exhibited the pebble stone-like structure of Ag<sub>2</sub>MoO<sub>4</sub> on the NRGO surface, observed by FESEM techniques. At 1 Ag<sup>-1</sup>, the Ni foam coated with the AMO<img>NRGO (II) nanocomposite demonstrates a good C<sub>sp</sub> of 648 Fg<sup>-1</sup>. It displayed retention of 91 % of its initial capacitance over 5000 charge/discharge cycles. In an asymmetric supercapacitor (ASC) device, the electrodes of AMO<img>NRGO (II) || AC demonstrated an exceptional energy density (E<sub>d</sub>) of 44.13 Whkg<sup>-1</sup> at a discharge rate (597.79 Wkg<sup>-1</sup>). The results suggest that the AMO<img>NRGO electrodes exhibit promising electrochemical performance for the supercapacitor application.</div></div>","PeriodicalId":9758,"journal":{"name":"Chemical Physics Impact","volume":"10 ","pages":"Article 100863"},"PeriodicalIF":3.8000,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Physics Impact","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2667022425000519","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The energy density and the specific capacitance are two important parameters for improving energy storage devices. In this study, we introduce the novel incorporation of nitrogen-doped reduced graphene oxide (NRGO) into Ag2MoO4 nanoparticles, for use in asymmetric supercapacitor applications. The synthesized compounds were confirmed and characterized using structural, functional, nitrogen adsorption-desorption, surface, elemental analyses, and electrochemical properties. Here, the AMONRGO composite materials exhibited the pebble stone-like structure of Ag2MoO4 on the NRGO surface, observed by FESEM techniques. At 1 Ag-1, the Ni foam coated with the AMONRGO (II) nanocomposite demonstrates a good Csp of 648 Fg-1. It displayed retention of 91 % of its initial capacitance over 5000 charge/discharge cycles. In an asymmetric supercapacitor (ASC) device, the electrodes of AMONRGO (II) || AC demonstrated an exceptional energy density (Ed) of 44.13 Whkg-1 at a discharge rate (597.79 Wkg-1). The results suggest that the AMONRGO electrodes exhibit promising electrochemical performance for the supercapacitor application.