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Dithiolene Complexes of First Row Transition Metals for Symmetric Non-Aqueous Redox Flow Batteries

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Dithiolene Complexes of First Row Transition Metals for Symmetric Non-Aqueous Redox Flow Batteries. / Toghill, Kathryn; Armstrong, Craig; Hogue, Ross.
In: ChemSusChem, Vol. 12, No. 19, 08.10.2019, p. 4506-4515.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Toghill, K, Armstrong, C & Hogue, R 2019, 'Dithiolene Complexes of First Row Transition Metals for Symmetric Non-Aqueous Redox Flow Batteries', ChemSusChem, vol. 12, no. 19, pp. 4506-4515. https://doi.org/10.1002/cssc.201901702

APA

Toghill, K., Armstrong, C., & Hogue, R. (2019). Dithiolene Complexes of First Row Transition Metals for Symmetric Non-Aqueous Redox Flow Batteries. ChemSusChem, 12(19), 4506-4515. https://doi.org/10.1002/cssc.201901702

Vancouver

Toghill K, Armstrong C, Hogue R. Dithiolene Complexes of First Row Transition Metals for Symmetric Non-Aqueous Redox Flow Batteries. ChemSusChem. 2019 Oct 8;12(19):4506-4515. Epub 2019 Aug 6. doi: 10.1002/cssc.201901702

Author

Toghill, Kathryn ; Armstrong, Craig ; Hogue, Ross. / Dithiolene Complexes of First Row Transition Metals for Symmetric Non-Aqueous Redox Flow Batteries. In: ChemSusChem. 2019 ; Vol. 12, No. 19. pp. 4506-4515.

Bibtex

@article{4b67b809983241229129d6c15009b77c,
title = "Dithiolene Complexes of First Row Transition Metals for Symmetric Non-Aqueous Redox Flow Batteries",
abstract = "Five metal complexes of the dithiolene ligand maleonitriledithiolate (mnt2−) with M=V, Fe, Co, Ni, Cu were studied as redox‐active materials for nonaqueous redox flow batteries (RFBs). All five complexes exhibit at least two redox processes, making them applicable to symmetric RFBs as single‐species electrolytes, that is, as both negolyte and posolyte. Charge–discharge cycling in a small‐scale RFB gave modest performances for [(tea)2Vmnt], [(tea)2Comnt], and [(tea)2Cumnt] whereas [(tea)Femnt] and [(tea)2Nimnt] (tea=tetraethylammonium) failed to hold any significant capacity, indicating poor stability. Independent negolyte‐ and posolyte‐only battery cycling of a single redox couple, as well as UV/Vis spectroscopy, showed that for [(tea)2Vmnt] the negolyte is stable whereas the posolyte is unstable over multiple charge–discharge cycles; for [(tea)2Comnt], [(tea)2Nimnt], and [(tea)2Cumnt], the negolyte suffers rapid capacity fading although the posolyte is more robust. Identifying a means to stabilize Vmnt3−/2− as a negolyte, and Comnt2−/1−, Nimnt2−/1−, and Cumnt2−/1− as posolytes could lead to their use in asymmetric RFBs.",
keywords = "batteries, dithiolenes, electrochemistry, nonaqueous systems, redox chemistry",
author = "Kathryn Toghill and Craig Armstrong and Ross Hogue",
year = "2019",
month = oct,
day = "8",
doi = "10.1002/cssc.201901702",
language = "English",
volume = "12",
pages = "4506--4515",
journal = "ChemSusChem",
issn = "1864-5631",
publisher = "Wiley-VCH Verlag",
number = "19",

}

RIS

TY - JOUR

T1 - Dithiolene Complexes of First Row Transition Metals for Symmetric Non-Aqueous Redox Flow Batteries

AU - Toghill, Kathryn

AU - Armstrong, Craig

AU - Hogue, Ross

PY - 2019/10/8

Y1 - 2019/10/8

N2 - Five metal complexes of the dithiolene ligand maleonitriledithiolate (mnt2−) with M=V, Fe, Co, Ni, Cu were studied as redox‐active materials for nonaqueous redox flow batteries (RFBs). All five complexes exhibit at least two redox processes, making them applicable to symmetric RFBs as single‐species electrolytes, that is, as both negolyte and posolyte. Charge–discharge cycling in a small‐scale RFB gave modest performances for [(tea)2Vmnt], [(tea)2Comnt], and [(tea)2Cumnt] whereas [(tea)Femnt] and [(tea)2Nimnt] (tea=tetraethylammonium) failed to hold any significant capacity, indicating poor stability. Independent negolyte‐ and posolyte‐only battery cycling of a single redox couple, as well as UV/Vis spectroscopy, showed that for [(tea)2Vmnt] the negolyte is stable whereas the posolyte is unstable over multiple charge–discharge cycles; for [(tea)2Comnt], [(tea)2Nimnt], and [(tea)2Cumnt], the negolyte suffers rapid capacity fading although the posolyte is more robust. Identifying a means to stabilize Vmnt3−/2− as a negolyte, and Comnt2−/1−, Nimnt2−/1−, and Cumnt2−/1− as posolytes could lead to their use in asymmetric RFBs.

AB - Five metal complexes of the dithiolene ligand maleonitriledithiolate (mnt2−) with M=V, Fe, Co, Ni, Cu were studied as redox‐active materials for nonaqueous redox flow batteries (RFBs). All five complexes exhibit at least two redox processes, making them applicable to symmetric RFBs as single‐species electrolytes, that is, as both negolyte and posolyte. Charge–discharge cycling in a small‐scale RFB gave modest performances for [(tea)2Vmnt], [(tea)2Comnt], and [(tea)2Cumnt] whereas [(tea)Femnt] and [(tea)2Nimnt] (tea=tetraethylammonium) failed to hold any significant capacity, indicating poor stability. Independent negolyte‐ and posolyte‐only battery cycling of a single redox couple, as well as UV/Vis spectroscopy, showed that for [(tea)2Vmnt] the negolyte is stable whereas the posolyte is unstable over multiple charge–discharge cycles; for [(tea)2Comnt], [(tea)2Nimnt], and [(tea)2Cumnt], the negolyte suffers rapid capacity fading although the posolyte is more robust. Identifying a means to stabilize Vmnt3−/2− as a negolyte, and Comnt2−/1−, Nimnt2−/1−, and Cumnt2−/1− as posolytes could lead to their use in asymmetric RFBs.

KW - batteries

KW - dithiolenes

KW - electrochemistry

KW - nonaqueous systems

KW - redox chemistry

U2 - 10.1002/cssc.201901702

DO - 10.1002/cssc.201901702

M3 - Journal article

VL - 12

SP - 4506

EP - 4515

JO - ChemSusChem

JF - ChemSusChem

SN - 1864-5631

IS - 19

ER -