{"title":"提高一锅法制备的掺镍 α-MnO2 在超级电容器中的电化学性能","authors":"Bengang Tan, Nali Chen, Lizhi Huang, Xin Gao, Lin Tan, Huixia Feng","doi":"10.1016/j.jiec.2024.06.041","DOIUrl":null,"url":null,"abstract":"Poor capacitive behavior caused by low electronic conductivity and slow reaction kinetics is the main obstacle faced by the MnO electrode materials in current supercapacitors. Herein, the influence of Ni doping on the capacitive behavior of α-MnO synthesized by a low-cost and one-pot chemical coprecipitation method was investigated. During the doping process, the amount of Ni was increased from 0.05 mmol to 0.45 mmol in steps of 0.1 mmol. The structure and chemical composition of Ni-doped MnO (MnO-Ni) were characterized by XRD, FTIR, SEM, EDS, and XPS. Comprehensive studies show that no change in the crystal phase structure of MnO, while the decrease in the nanoparticle size and the increase in electronic conductivity by Ni doping, which improve the capacitive behavior of α-MnO. With specific capacitance values increasing with increasing amounts of Ni up to a certain limit 0.25 mmol, the specific capacitance of 325.8 F/g was given by MnO-Ni electrode at a current density of 0.5 A/g, which was nearly 1.72 times that of MnO electrode of 189.47 F/g. Moreover, the MnO-Ni electrode showed excellent capacitance retention (112%) than the MnO electrode (109.5%) after 3000 cycles.","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"41 1","pages":""},"PeriodicalIF":5.9000,"publicationDate":"2024-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced the electrochemical performance of Ni-doped α-MnO2 prepared with one-pot process for supercapacitors\",\"authors\":\"Bengang Tan, Nali Chen, Lizhi Huang, Xin Gao, Lin Tan, Huixia Feng\",\"doi\":\"10.1016/j.jiec.2024.06.041\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Poor capacitive behavior caused by low electronic conductivity and slow reaction kinetics is the main obstacle faced by the MnO electrode materials in current supercapacitors. Herein, the influence of Ni doping on the capacitive behavior of α-MnO synthesized by a low-cost and one-pot chemical coprecipitation method was investigated. During the doping process, the amount of Ni was increased from 0.05 mmol to 0.45 mmol in steps of 0.1 mmol. The structure and chemical composition of Ni-doped MnO (MnO-Ni) were characterized by XRD, FTIR, SEM, EDS, and XPS. Comprehensive studies show that no change in the crystal phase structure of MnO, while the decrease in the nanoparticle size and the increase in electronic conductivity by Ni doping, which improve the capacitive behavior of α-MnO. With specific capacitance values increasing with increasing amounts of Ni up to a certain limit 0.25 mmol, the specific capacitance of 325.8 F/g was given by MnO-Ni electrode at a current density of 0.5 A/g, which was nearly 1.72 times that of MnO electrode of 189.47 F/g. Moreover, the MnO-Ni electrode showed excellent capacitance retention (112%) than the MnO electrode (109.5%) after 3000 cycles.\",\"PeriodicalId\":363,\"journal\":{\"name\":\"Journal of Industrial and Engineering Chemistry\",\"volume\":\"41 1\",\"pages\":\"\"},\"PeriodicalIF\":5.9000,\"publicationDate\":\"2024-06-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Industrial and Engineering Chemistry\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1016/j.jiec.2024.06.041\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Industrial and Engineering Chemistry","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1016/j.jiec.2024.06.041","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Enhanced the electrochemical performance of Ni-doped α-MnO2 prepared with one-pot process for supercapacitors
Poor capacitive behavior caused by low electronic conductivity and slow reaction kinetics is the main obstacle faced by the MnO electrode materials in current supercapacitors. Herein, the influence of Ni doping on the capacitive behavior of α-MnO synthesized by a low-cost and one-pot chemical coprecipitation method was investigated. During the doping process, the amount of Ni was increased from 0.05 mmol to 0.45 mmol in steps of 0.1 mmol. The structure and chemical composition of Ni-doped MnO (MnO-Ni) were characterized by XRD, FTIR, SEM, EDS, and XPS. Comprehensive studies show that no change in the crystal phase structure of MnO, while the decrease in the nanoparticle size and the increase in electronic conductivity by Ni doping, which improve the capacitive behavior of α-MnO. With specific capacitance values increasing with increasing amounts of Ni up to a certain limit 0.25 mmol, the specific capacitance of 325.8 F/g was given by MnO-Ni electrode at a current density of 0.5 A/g, which was nearly 1.72 times that of MnO electrode of 189.47 F/g. Moreover, the MnO-Ni electrode showed excellent capacitance retention (112%) than the MnO electrode (109.5%) after 3000 cycles.
期刊介绍:
Journal of Industrial and Engineering Chemistry is published monthly in English by the Korean Society of Industrial and Engineering Chemistry. JIEC brings together multidisciplinary interests in one journal and is to disseminate information on all aspects of research and development in industrial and engineering chemistry. Contributions in the form of research articles, short communications, notes and reviews are considered for publication. The editors welcome original contributions that have not been and are not to be published elsewhere. Instruction to authors and a manuscript submissions form are printed at the end of each issue. Bulk reprints of individual articles can be ordered. This publication is partially supported by Korea Research Foundation and the Korean Federation of Science and Technology Societies.