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Morphology-dependent Performance of Nanostructured MnO2 as an Oxygen Reduction Catalyst in Microbial Fuel Cells
Yuan, Haoran1,2; Deng, Lifang1,2; Qi, Yujie1,2; Kobayashi, Noriyuki3; Hasatani, Masanobu3
2015-05-01
Source PublicationINTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
Volume10Issue:5Pages:3693-3706
AbstractDifferent nanostructures (nanoflowers, nanorods and nanotubes) of manganese dioxide (MnO2) were successfully synthesized using hydrothermal methods with different dwell times and were demonstrated to be efficient and stable cathode catalysts for the oxygen reduction reaction (ORR). Subsequent examination of these nanostructures using field-emission scanning electron microscopy and transmission electron microscopy revealed a strong correlation between the dwell time and the resulting morphology of the nanostructures and confirmed the successful synthesis of nanotubes. The electrocatalytic activities of the different nanostructures were investigated using cyclic voltammetry and linear sweep voltammetry, and the results indicated that all of the MnO2 nanostructures can catalyze the ORR with different catalytic activities. The nanotubes appeared to possess the highest catalytic activity, with a more positive peak potential and a larger ORR peak current. Additionally, a maximum power density of 11.6 W/m(3) was produced by the microbial fuel cell (MFC) with the nanotube cathode, which was higher than that of the other nanostructures and comparable to that of Pt/C (14.1 W/m(3)). The results of this study demonstrate that nanotubes are ideal crystal structures for MnO2 and that they offer a good alternative to Pt/C for practical MFC applications.
SubtypeArticle
KeywordHydrothermal Nanostructured Manganese Dioxide Electrochemical Oxygen-reduction Activity Cathode Catalyst Microbial Fuel Cell
WOS HeadingsScience & Technology ; Physical Sciences
WOS Subject ExtendedElectrochemistry
WOS KeywordMANGANESE-DIOXIDE ; CATHODIC CATALYST ; ELECTRICITY-GENERATION ; NANOTUBES ; OXIDE ; SUPERCAPACITORS ; MECHANISM ; ELECTRODE
Indexed BySCI
Language英语
WOS SubjectElectrochemistry
WOS IDWOS:000354782200001
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10494
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
3.Nagoya Univ, EcoTopia Sci Inst, Nagoya, Aichi 4648603, Japan
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Yuan, Haoran,Deng, Lifang,Qi, Yujie,et al. Morphology-dependent Performance of Nanostructured MnO2 as an Oxygen Reduction Catalyst in Microbial Fuel Cells[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2015,10(5):3693-3706.
APA Yuan, Haoran,Deng, Lifang,Qi, Yujie,Kobayashi, Noriyuki,&Hasatani, Masanobu.(2015).Morphology-dependent Performance of Nanostructured MnO2 as an Oxygen Reduction Catalyst in Microbial Fuel Cells.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,10(5),3693-3706.
MLA Yuan, Haoran,et al."Morphology-dependent Performance of Nanostructured MnO2 as an Oxygen Reduction Catalyst in Microbial Fuel Cells".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 10.5(2015):3693-3706.
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