Document Detail


Polysulfide Flow Batteries Enabled by Percolating Nanoscale Conductor Networks.
MedLine Citation:
PMID:  24597525     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A new approach to flow battery design is demonstrated wherein diffusion-limited aggregation of nanoscale conductor particles at ~1 vol% concentration is used to impart mixed electronic-ionic conductivity to redox solutions, forming flow electrodes with embedded current collector networks that self-heal after shear. Lithium polysulfide flow cathodes of this architecture exhibit electrochemical activity that is distributed throughout the volume of flow electrodes rather than being confined to surfaces of stationary current collectors. The nanoscale network architecture enables cycling of polysulfide solutions deep into precipitation regimes that historically have shown poor capacity utilization and reversibility, and may thereby enable new flow battery designs of higher energy density and lower system cost. Lithium polysulfide half-flow cells operating in both continuous and intermittent flow mode are demonstrated for the first time.
Authors:
Frank Fan; William Woodford; Zheng Li; Nir Baram; Kyle C Smith; Ahmed Helal; Gareth H McKinley; W Craig Carter; Yet-Ming Chiang
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-3-5
Journal Detail:
Title:  Nano letters     Volume:  -     ISSN:  1530-6992     ISO Abbreviation:  Nano Lett.     Publication Date:  2014 Mar 
Date Detail:
Created Date:  2014-3-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088070     Medline TA:  Nano Lett     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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