| Morphology-controlled syntheses of alpha-MnO2 for electrochemical energy storage | |
| He, Weidong1; Yang, Wenjin2; Wang, Chenggang1; Deng, Xiaolong1; Liu, Baodan2; Xu, Xijin1 | |
| Corresponding Author | Liu, Baodan(baodanliu@imr.ac.cn) ; Xu, Xijin(sps_xuxj@ujn.edu.cn) |
| 2016-06-14 | |
| Source Publication | PHYSICAL CHEMISTRY CHEMICAL PHYSICS
 |
| ISSN | 1463-9076 |
| Volume | 18Issue:22Pages:15235-15243 |
| Abstract | Manganese 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 Organization | Taishan Scholar ; National Natural Science Foundation of China ; Encouragement Foundation for Excellent Middle-aged and Young Scientist of Shandong Province |
| DOI | 10.1039/c6cp02548j |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Taishan 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 Area | Chemistry ; Physics |
| WOS Subject | Chemistry, Physical ; Physics, Atomic, Molecular & Chemical |
| WOS ID | WOS:000378273500055 |
| Publisher | ROYAL SOC CHEMISTRY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/122393 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Baodan; Xu, Xijin |
| Affiliation | 1.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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