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Linked Picolinamide Nickel Complexes as Redox Carriers for Nonaqueous Flow Batteries

Journal Article · · ChemSusChem
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  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
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Here, the use of nickel complexes utilizing non–innocent ligands based on picolinamide to function as redox carriers in flow batteries was explored. The picolinamide moiety was linked together with –CH2CH2– (bpen), –CH2CH2CH2– (bppn), and –C6H4– (bpb) moieties, resulting in two, three, and four quasi–reversible waves, respectively, for the nickel complexes and >3 V difference between the outermost positive and negative waves. The redox events were theoretically modelled for each complex, showing excellent agreement (<0.3 V difference) between the experimental and modelled potentials. Bulk cycling of the most soluble complex, Ni(bppn), indicated only one of the three waves was reversible. Therefore, Ni(bppn) has the ability to act as a negative charge redox carrier in flow cells.
Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
LDRD; USDOE
Grant/Contract Number:
89233218CNA000001
OSTI ID:
1495174
Alternate ID(s):
OSTI ID: 1493930
Report Number(s):
LA-UR--19-20609
Journal Information:
ChemSusChem, Journal Name: ChemSusChem Journal Issue: 7 Vol. 12; ISSN 1864-5631
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

25 ENERGY STORAGE
Energy Sciences
batteries
nickel
nonaqueous
redox flow battery
redox potentials