Binder-free thin graphite fiber mat sandwich electrode architectures for energy-efficient vanadium redox flow batteries
Journal Article
·
· Catalysis Today
- Indian Inst. of Technology (IIT), Madras (India); OSTI
- Indian Inst. of Technology (IIT), Madras (India)
- Washington Univ., St. Louis, MO (United States)
- 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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