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Long Cyclic Life in Manganese Oxide-Based Electrodes

文献类型：期刊论文

作者Wang, Zhaoming1,4; Qin, Qingqing2; Xu, Wei4; Yan, Jian1,3; Wu, Yucheng1,3
刊名ACS APPLIED MATERIALS & INTERFACES
出版日期2016-07-20
卷号8期号:28页码:18078-18088
关键词Manganese Oxides Cycling Stability Dissolution Issue Morphology Transformation Supercapacitor
DOI10.1021/acsami.6b04883
文献子类Article
英文摘要Long cyclic life is very important to the practical application of the pseudocapacitors. A systematic study has been carried out to reveal what key factors and how they affecting the cycling behaviors of manganese oxides. The specific capacitance degradation of MnOx is usually attributed to the so-called "dissolution issue. Our results indicate that "dissoluted MnOx" is in the form of the "flotsam derived from the detached active materials instead of Mn2+ in the solution, which causes color change of electrolyte and the loss of specific capacitance. During the cycling, the morphology of manganese oxides transformed to flower-like flakes regardless of the starting structures. After that, it tends to form nanowires especially at elevated temperatures. According to the relative low electrochemical utility of nanowires, specific capacitance might decrease at this stage. These results put forward new questions on charge storage mechanism. Besides, electrochemical oxidation of MnOx leads to an increase in specific capacitance. The cycling behavior of MnOx is mainly determined by these three factors. Excitingly, a very stable cycling performance with no capacitance degradation over 40 000 cycles has been achieved in MnOx hierarchical sphere-based electrodes. This study provides insightful understanding of the fundamental cycling behavior of MnOx-based electrodes and useful instructions for developing highly stable supercapacitors.
WOS关键词CARBON NANOTUBE/MNO2 COMPOSITES ; ELECTROCHEMICAL CAPACITORS ; SUPERCAPACITOR ELECTRODES ; STRUCTURAL EVOLUTION ; ION BATTERY ; PERFORMANCE ; STABILITY ; NANOFIBERS ; BEHAVIOR ; DIOXIDE
WOS研究方向Science & Technology - Other Topics ; Materials Science
语种英语
WOS记录号WOS:000380298400036
资助机构Natural Science Foundation of China(51301162 ; Natural Science Foundation of China(51301162 ; Natural Science Foundation of China(51301162 ; Natural Science Foundation of China(51301162 ; Natural Science Foundation of China(51301162 ; Natural Science Foundation of China(51301162 ; Natural Science Foundation of China(51301162 ; Natural Science Foundation of China(51301162 ; China Postdoctoral Science Foundation(2015M571924) ; China Postdoctoral Science Foundation(2015M571924) ; China Postdoctoral Science Foundation(2015M571924) ; China Postdoctoral Science Foundation(2015M571924) ; China Postdoctoral Science Foundation(2015M571924) ; China Postdoctoral Science Foundation(2015M571924) ; China Postdoctoral Science Foundation(2015M571924) ; China Postdoctoral Science Foundation(2015M571924) ; 21503065) ; 21503065) ; 21503065) ; 21503065) ; 21503065) ; 21503065) ; 21503065) ; 21503065) ; Natural Science Foundation of China(51301162 ; Natural Science Foundation of China(51301162 ; Natural Science Foundation of China(51301162 ; Natural Science Foundation of China(51301162 ; Natural Science Foundation of China(51301162 ; Natural Science Foundation of China(51301162 ; Natural Science Foundation of China(51301162 ; Natural Science Foundation of China(51301162 ; China Postdoctoral Science Foundation(2015M571924) ; China Postdoctoral Science Foundation(2015M571924) ; China Postdoctoral Science Foundation(2015M571924) ; China Postdoctoral Science Foundation(2015M571924) ; China Postdoctoral Science Foundation(2015M571924) ; China Postdoctoral Science Foundation(2015M571924) ; China Postdoctoral Science Foundation(2015M571924) ; China Postdoctoral Science Foundation(2015M571924) ; 21503065) ; 21503065) ; 21503065) ; 21503065) ; 21503065) ; 21503065) ; 21503065) ; 21503065)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/22121]  
专题合肥物质科学研究院_中科院固体物理研究所
作者单位1.Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Peoples R China
2.Hefei Univ Technol, Inst Ind & Equipment Technol, Hefei 230009, Peoples R China
3.Key Lab Adv Funct Mat & Devices Anhui Prov, Hefei 230009, Peoples R China
4.Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Zhaoming,Qin, Qingqing,Xu, Wei,et al. Long Cyclic Life in Manganese Oxide-Based Electrodes[J]. ACS APPLIED MATERIALS & INTERFACES,2016,8(28):18078-18088.
APA Wang, Zhaoming,Qin, Qingqing,Xu, Wei,Yan, Jian,&Wu, Yucheng.(2016).Long Cyclic Life in Manganese Oxide-Based Electrodes.ACS APPLIED MATERIALS & INTERFACES,8(28),18078-18088.
MLA Wang, Zhaoming,et al."Long Cyclic Life in Manganese Oxide-Based Electrodes".ACS APPLIED MATERIALS & INTERFACES 8.28(2016):18078-18088.

入库方式： OAI收割

来源：合肥物质科学研究院

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