Morphology-controlled syntheses of alpha-MnO2 for electrochemical energy storage

doi:10.1039/c6cp02548j

IMR OpenIR

	Morphology-controlled syntheses of alpha-MnO2 for electrochemical energy storage
	He, Weidong 1; Yang, Wenjin 2; Wang, Chenggang 1; Deng, Xiaolong 1; Liu, Baodan 2; Xu, Xijin 1
通讯作者	Liu, Baodan(baodanliu@imr.ac.cn) ; Xu, Xijin(sps_xuxj@ujn.edu.cn)
	2016-06-14
发表期刊	PHYSICAL CHEMISTRY CHEMICAL PHYSICS
ISSN	1463-9076
卷号	18 期号:22 页码:15235-15243
摘要	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.
资助者	Taishan Scholar ; National Natural Science Foundation of China ; Encouragement Foundation for Excellent Middle-aged and Young Scientist of Shandong Province
DOI	10.1039/c6cp02548j
收录类别	SCI
语种	英语
资助项目	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研究方向	Chemistry ; Physics
WOS类目	Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS记录号	WOS:000378273500055
出版者	ROYAL SOC CHEMISTRY
引用统计	被引频次：59[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/122393
专题	中国科学院金属研究所
通讯作者	Liu, Baodan; Xu, Xijin
作者单位	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
推荐引用方式 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.