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Title: Stack developments in a kW class all vanadium mixed acid redox flow battery at the Pacific Northwest National Laboratory

Over the past several years, efforts have been focused on improving the performance of kW class stacks with increasing current density. The influence of the Nafion membrane resistance, an interdigitated design to reduce the pressure drop in the electrolyte circuit, the temperature of the electrolyte, and the electrode structure will be discussed and correlated to the electrical performance. Furthermore, improvements to the stack energy efficiency and how those translate to the overall system efficiency will also be discussed.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Publication Date:
OSTI Identifier:
1240220
Report Number(s):
PNNL-SA--112057
Journal ID: ISSN 0013-4651; TE1400000
Grant/Contract Number:
AC05-76RL01830
Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 163; Journal Issue: 1; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
all vanadium; electrical performance; flow design; redox flow battery; stack development