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Binder-free thin graphite fiber mat sandwich electrode architectures for energy-efficient vanadium redox flow batteries

Journal Article · · Catalysis Today
 [1];  [2];  [3];  [4];  [3];  [2]
  1. Indian Inst. of Technology (IIT), Madras (India); OSTI
  2. Indian Inst. of Technology (IIT), Madras (India)
  3. Washington Univ., St. Louis, MO (United States)
  4. Indian Inst. of Technology (IIT), New Delhi (India)
Vanadium redox flow batteries (VRFB) are emerging as the preferred energy storage solution for long-duration energy storage (LDES) and grid-scale load levelling. In this study, we report a novel binder-free sandwich electrode architecture consisting of a thin layer (6–12 mg cm–2) of thermally activated graphite felt mat (TGFM) sandwiched between thin carbon papers (TCP-TGFM-TCP). This electrode architecture substantially reduced the polarization (I-V) resistance of the VRFB by 23 %, resulting in a current density increase from 340 mA cm–2 at 1 V for the thermally activated graphite felt (TGF) electrode to 470 mA cm–2 at 1 V, and an energy efficiency of 80 % at 100 mA cm–2 is realized.
Research Organization:
Washington Univ., St. Louis, MO (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
Grant/Contract Number:
AR0000768
OSTI ID:
1848245
Alternate ID(s):
OSTI ID: 1782323
Journal Information:
Catalysis Today, Journal Name: Catalysis Today Vol. 370; ISSN 0920-5861
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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