Metal metaphosphate complexes for redox flow batteries
Name
974641959-MIT.pdf
Description
Full printable version
Size
4.76 MB
Format
Adobe PDF
Checksum (MD5)
79288ac9e5dc67bed9e5e6d5fda7ef6e
Author(s)
Avena, Laura
Advisor(s)
Christopher C. Cummins.
Date Issued
2016
Publisher
Massachusetts Institute of Technology
Abstract
In this thesis, possibility of using anionic metal complexes to limit crossover of active species in redox flow batteries was explored. A series of first row transition metal trimetaphosphate complexes as bis(triphenylphosphine)iminium (PPN) salts have been prepared. Their electrochemical properties have been studied to evaluate them for redox flow battery applications. [PPN]₃[Fe(P₃Og)₂] and [PPN]₂[VO(P₃O₉)(acac)] were identified as a suitable couple for a dual-active-species redox flow battery with an open cell potential of 1.5 V. [PPN]₃[V(P₃Og)₂] can be oxidized and reduced within the stability window of acetonitrile and it is therefor a promising candidate for single-active-species redox flow battery applications. The difference in redox potentials between the V(III)/V(IV) and V(II)/V(III) couples is 2.7 V which is the highest peak to peak separation reported in the literature to date.
Description
Thesis: S.M., Massachusetts Institute of Technology, Department of Chemistry, 2016.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 57-59).
Subjects
Chemistry.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Terms of Use
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