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Strategies to optimize performance of lithium-ion supercapacitors: Screening of cathode configuration, anode pre-lithiation loading and separator type

  • W. J. Cao
  • , Y. X. Li
  • , B. Fitch
  • , J. Shih
  • , T. Doung
  • , J. P. Zheng
  • Florida State University
  • Florida State University
  • FMC Lithium Division
  • United States Department of Energy

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

The Li-ion capacitor (LIC) is composed of a lithium-doped carbon anode and an activated carbon cathode, which is a half Li-ion battery (LIB) and a half electrochemical double-layer capacitor (EDLC). LICs can achieve much more energy density than EDLC without sacrificing the high power performance advantage of capacitors over batteries. LIC pouch cells were assembled using activated carbon (AC) cathode and hard carbon (HC) + stabilized lithium metal power (SLMP®) anode. Different cathode configurations, various SLMP loadings on HC anode, and two types of separators were investigated to achieve the optimal electrochemical performance of the LIC. Firstly, the cathode binders study suggests that the PTFE binder offers improved energy and power performances for LIC in comparison to PVDF. Secondly, the mass ratio of SLMP to HC is at 1:7 to obtain the optimized electrochemical performance for LIC among all the various studied mass ratios between lithium loading amounts and active anode material. Finally, compared to the separator Celgard PP 3501, cellulose based TF40-30 is proven to be a preferred separator for LIC.

Original languageEnglish
Title of host publicationBatteries and Energy Technology Joint Session (General) - 226th ECS Meeting
EditorsA. Manivannan, J. Xiao, B. Y. Liaw, S. Mukerjee, M. Doeff, D. Wang
PublisherElectrochemical Society Inc.
Pages67-83
Number of pages17
Edition18
ISBN (Electronic)9781607685395
DOIs
StatePublished - 2014
EventSymposium on Batteries and Energy Technology Joint General Session - 2014 ECS and SMEQ Joint International Meeting - Cancun, Mexico
Duration: Oct 5 2014Oct 9 2014

Publication series

NameECS Transactions
Number18
Volume64
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

ConferenceSymposium on Batteries and Energy Technology Joint General Session - 2014 ECS and SMEQ Joint International Meeting
Country/TerritoryMexico
CityCancun
Period10/5/1410/9/14

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