Xiaohui Wang , Hongqing Chen , Leifang Liu , Longlong Geng , Jiangshan Zhao , Yanxia Wang , Wei Liu , Zhigang Wang , Zhen Li , Lingmin Sun , Xinyu Bao
{"title":"Preparation of NiO nanocrystals with different morphologies and their supercapacitive performance","authors":"Xiaohui Wang , Hongqing Chen , Leifang Liu , Longlong Geng , Jiangshan Zhao , Yanxia Wang , Wei Liu , Zhigang Wang , Zhen Li , Lingmin Sun , Xinyu Bao","doi":"10.1016/j.chemphys.2025.112637","DOIUrl":null,"url":null,"abstract":"<div><div>Three Ni(OH)<sub>2</sub> samples of β phase, α phase and mixed phase were prepared by gas-liquid diffusion method respectively. In this simple synthesis system, nanosheets-like β-Ni(OH)<sub>2</sub> and microflower-like mixed phase-Ni(OH)<sub>2</sub> can be obtained by changing the type and concentration of nickel salts; whereas particle-like α-Ni(OH)<sub>2</sub> could be obtained using ammonium carbonate instead of ammonia water as a precipitation agent. In this work, the evolution mechanism of various morphologies was discussed in detail. Then three NiO samples were prepared by calcining the corresponding precursor of nickel hydroxide and characterized using XRD, SEM, TEM, XPS and other techniques to analyze structure and morphology. The electrochemical test results showed that nanosheets-like NiO-β exhibited the best supercapacitive performance.</div></div>","PeriodicalId":272,"journal":{"name":"Chemical Physics","volume":"593 ","pages":"Article 112637"},"PeriodicalIF":2.0000,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Physics","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0301010425000382","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Three Ni(OH)2 samples of β phase, α phase and mixed phase were prepared by gas-liquid diffusion method respectively. In this simple synthesis system, nanosheets-like β-Ni(OH)2 and microflower-like mixed phase-Ni(OH)2 can be obtained by changing the type and concentration of nickel salts; whereas particle-like α-Ni(OH)2 could be obtained using ammonium carbonate instead of ammonia water as a precipitation agent. In this work, the evolution mechanism of various morphologies was discussed in detail. Then three NiO samples were prepared by calcining the corresponding precursor of nickel hydroxide and characterized using XRD, SEM, TEM, XPS and other techniques to analyze structure and morphology. The electrochemical test results showed that nanosheets-like NiO-β exhibited the best supercapacitive performance.
期刊介绍：
Chemical Physics publishes experimental and theoretical papers on all aspects of chemical physics. In this journal, experiments are related to theory, and in turn theoretical papers are related to present or future experiments. Subjects covered include: spectroscopy and molecular structure, interacting systems, relaxation phenomena, biological systems, materials, fundamental problems in molecular reactivity, molecular quantum theory and statistical mechanics. Computational chemistry studies of routine character are not appropriate for this journal.
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