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Morphology-controlled syntheses of alpha-MnO2 for electrochemical energy storage
He, Weidong1; Yang, Wenjin2; Wang, Chenggang1; Deng, Xiaolong1; Liu, Baodan2; Xu, Xijin1
Corresponding AuthorLiu, Baodan(baodanliu@imr.ac.cn) ; Xu, Xijin(sps_xuxj@ujn.edu.cn)
2016-06-14
Source PublicationPHYSICAL CHEMISTRY CHEMICAL PHYSICS
ISSN1463-9076
Volume18Issue:22Pages:15235-15243
AbstractManganese dioxide (MnO2) nanoarchitectures including microspheres assembled by nanosheets and hollow urchins assembled by nanorods have been successfully synthesized using a facile and efficient hydrothermal method at 150 degrees C. The effects of concentrations of the reactants and reaction time on the structures and morphologies of MnO2 were systematically investigated. The experimental results showed that the morphologies of MnO2 transformed into nanosheet-assembled microspheres (10 min) from nanorod-assembled hollow urchins (5 min) by tuning the suitable reaction time. The nanorodassembled hollow urchins experienced the morphology transformation cycle from urchin to a disordered structure to urchin with the extension of the reaction time. Furthermore, the nanorods with different diameters and lengths were formed with different concentrations of reactants at the same reaction time (8 h). The MnO2 nanorods fabricated with 0.59 g KMnO4 showed a maximum specific capacitance (198 F g(-1)) with a good rate capability and excellent cycling stability (maintained 94% after 2000 cycles). Furthermore, the nanosheet-assembled microspheres exhibited the higher specific capacitance of 131 F g(-1) at 1 A g(-1) with a long-term cycling stability for the samples at different reaction times. These results indicated their promising applications as high-performance supercapacitor electrodes and provided a generic guideline in developing different nanostructured electrode materials for electrochemical energy storage.
Funding OrganizationTaishan Scholar ; National Natural Science Foundation of China ; Encouragement Foundation for Excellent Middle-aged and Young Scientist of Shandong Province
DOI10.1039/c6cp02548j
Indexed BySCI
Language英语
Funding ProjectTaishan Scholar[TSHW20120210] ; National Natural Science Foundation of China[11304120] ; National Natural Science Foundation of China[21505050] ; Encouragement Foundation for Excellent Middle-aged and Young Scientist of Shandong Province[BS2014CL012]
WOS Research AreaChemistry ; Physics
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS IDWOS:000378273500055
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:46[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/122393
Collection中国科学院金属研究所
Corresponding AuthorLiu, Baodan; Xu, Xijin
Affiliation1.Univ Jinan, Sch Phys & Technol, 336 West Rd Nan Xinzhuang, Jinan 250022, Shandong, Peoples R China
2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
He, Weidong,Yang, Wenjin,Wang, Chenggang,et al. Morphology-controlled syntheses of alpha-MnO2 for electrochemical energy storage[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2016,18(22):15235-15243.
APA He, Weidong,Yang, Wenjin,Wang, Chenggang,Deng, Xiaolong,Liu, Baodan,&Xu, Xijin.(2016).Morphology-controlled syntheses of alpha-MnO2 for electrochemical energy storage.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,18(22),15235-15243.
MLA He, Weidong,et al."Morphology-controlled syntheses of alpha-MnO2 for electrochemical energy storage".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 18.22(2016):15235-15243.
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