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Potential-modulated Electrocapacitive Properties of Soft Microstructured Polypyrrole
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Biosensors and Bioelectronics. Linköping University, Faculty of Science & Engineering. Prince Songkla University, Thailand.
Linköping University, Department of Physics, Chemistry and Biology, Chemistry. Linköping University, Faculty of Science & Engineering. Sichuan Agriculture University, Peoples R China.
Linköping University, Department of Physics, Chemistry and Biology, Biosensors and Bioelectronics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-3274-6029
2017 (English)In: Electroanalysis, ISSN 1040-0397, E-ISSN 1521-4109, Vol. 29, no 1, 203-207 p.Article in journal (Refereed) Published
Abstract [en]

Microstructured materials are becoming important for high performance electrochemical device especially for energy storage due to their advantageous diffusion and flux properties. Utilizing a rationally designed hollow structured polypyrrole microparticles (PPyMPs) with controllable wall thicknesses of -110 to 340 nm, we observed a significant morphological effect on electrocapacitive kinetics of the PPyMPs modulated by the voltammetric potential window and scan rate. The thinhollow architecture of PPyMPs revealed significant enhancement of charge storage performance (up to 447%), high retention at high scan rate and faster charge/dis-charge kinetics compared to the thick-hollow PPyMPs due to the larger accessible surface area and decrease of diffusion length. These findings demonstrated the electrocapacitive kinetics performance of microstructured soft materials related to morphological effect modulated by operational conditions. Our study provides new insight on electrochemistry of soft electrode materials with controlled nanostructured morphology for understanding the mechanism of charge insertion and mass diffusion for the future development of high performance porous electrode material.

Place, publisher, year, edition, pages
WILEY-V C H VERLAG GMBH , 2017. Vol. 29, no 1, 203-207 p.
Keyword [en]
Polypyrrole; Hollow microparticles; Potential-modulation; Scan rate; Charge storage
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-136077DOI: 10.1002/elan.201600261ISI: 000394995900027OAI: oai:DiVA.org:liu-136077DiVA: diva2:1084777
Conference
16th International Conference on Electroanalysis (ESEAC)
Note

Funding Agencies|Graduate School Prince of Songkla University; Higher Education Research Promotion; National Research University Project of Thailand (NRU); Office of higher Education Commission; Office of higher Education Commission; the Center of Excellence for Innovation in Chemistry (PERCH-CIC), Commission on Higher Education, Ministry of Education, Thailand

Available from: 2017-03-27 Created: 2017-03-27 Last updated: 2017-04-11

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