A realistic 3D model of mediator supercapacitors in micrometer level

Y. Wang, C. Zhang, X. Qiao, Xiangyang Zhou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A 3-D microscopic model is set up for studying the roles of different components in mediator supercapacitor. In the model, mediator clusters are interfacing with active carbon, carbon fibers, and polymer electrolyte. Different conductivities, capacities, and mechanical properties were assigned to different components. Computational analyses were conducted using COMSOL Multiphysics. Hotspots appear around mediator clusters because of current concentration around them during charging/discharging. Further minimization of the mediator clusters will help mitigate this issue. Total capacitance of mediator supercapacitor increases exponentially when mediator capacitance and activated carbon capacitance reaches critical values. In addition, the mediator supercapacitor stores more charge with higher electrolyte conductivity. When applied pressure is high, stress concentrates around carbon fibers which cause the destruction of polymer electrolyte.

Original languageEnglish (US)
Title of host publicationJoint General Session: Batteries and Energy Storage -and- Fuel Cells, Electrolytes, and Energy Conversion
PublisherElectrochemical Society Inc.
Pages15-30
Number of pages16
Volume72
Edition8
ISBN (Electronic)9781607685395
DOIs
StatePublished - 2016
EventJoint General Session: Batteries and Energy Storage -and- Fuel Cells, Electrolytes, and Energy Conversion - 229th ECS Meeting - San Diego, United States
Duration: May 29 2016Jun 2 2016

Other

OtherJoint General Session: Batteries and Energy Storage -and- Fuel Cells, Electrolytes, and Energy Conversion - 229th ECS Meeting
CountryUnited States
CitySan Diego
Period5/29/166/2/16

Keywords

  • 3D microscopic model
  • Mediator
  • Supercapacitor

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Wang, Y., Zhang, C., Qiao, X., & Zhou, X. (2016). A realistic 3D model of mediator supercapacitors in micrometer level. In Joint General Session: Batteries and Energy Storage -and- Fuel Cells, Electrolytes, and Energy Conversion (8 ed., Vol. 72, pp. 15-30). Electrochemical Society Inc.. https://doi.org/10.1149/07208.0015ecst