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Li-air flow batteries

  • X. J. Chen
  • , A. Shellikeri
  • , Q. Wu
  • , J. P. Zheng
  • , M. Hendrickson
  • , E. J. Plichta
  • Florida State University
  • Florida State University
  • RDER-CCA

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

Abstract

A novel rechargeable Li-air flow battery is demonstrated. It consists of a lithium-ion conducting glass-ceramic membrane sandwiched by a Li-metal anode in organic electrolyte and a carbon nanofoam cathode through which oxygen-saturated aqueous electrolyte flows. It features a flow cell design in which aqueous electrolyte is bubbled with compressed air, and is continuously circulated between the cell and a storage reservoir to supply sufficient oxygen for high power output. It shows high rate capability (5 mA/cm2) and renders a power density of 7.64 mW/cm2 at a constant discharge current density of 4 mA/cm2. By adding RuO2 as a catalyst in the cathode, the battery showed an improved round-trip efficiency (ca. 83%), with the overpotentials of 0.67 V between charge and discharge at a current of 1 mA/cm2. A Li-air flow battery using graphite as anode is also demonstrated for several cycles.

Original languageEnglish
Title of host publicationBatteries Beyond Lithium Ion
EditorsY. Xing, C. S. Johnson, M. Yakovleva, V. Di Noto, K. Zaghib
PublisherElectrochemical Society Inc.
Pages17-30
Number of pages14
Edition19
ISBN (Electronic)9781607685395
DOIs
StatePublished - 2014
EventSymposium on Batteries Beyond Lithium Ion - 2014 ECS and SMEQ Joint International Meeting - Cancun, Mexico
Duration: Oct 5 2014Oct 9 2014

Publication series

NameECS Transactions
Number19
Volume64
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

ConferenceSymposium on Batteries Beyond Lithium Ion - 2014 ECS and SMEQ Joint International Meeting
Country/TerritoryMexico
CityCancun
Period10/5/1410/9/14

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