Bi-functional effects of lengthening aliphatic chain of phthalimide-based negative redox couple and its non-aqueous flow battery performance at stack cell

Hyun Seung Kim; Seunghae Hwang; Youngjin Kim; Ji Heon Ryu; Seung M. Oh; Ki Jae Kim

doi:10.1063/1.5010210

Bi-functional effects of lengthening aliphatic chain of phthalimide-based negative redox couple and its non-aqueous flow battery performance at stack cell

Hyun Seung Kim, Seunghae Hwang, Youngjin Kim, Ji Heon Ryu, Seung M. Oh, Ki Jae Kim

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Effects of lengthening an aliphatic chain of a phthalimide-based negative redox couple for non-aqueous flow batteries are examined. The working voltage and solubility of N-butylphthalimide are 0.1 V lower and four times greater (2.0 M) than those of methyl-substituted phthalimide. These enhanced properties are attributed to a lower packing density. Consequently, the energy density of the proposed redox couple is greatly enhanced from butyl substitution. Furthermore, the results of the stack flow cell test with N,N,N′,N′-tetramethyl-p-phenylenediamine positive redox couple show advantageous features of this non-aqueous flow battery system: a stable Coulombic efficiency and high working voltage.

Original language	English
Article number	047901
Journal	APL Materials
Volume	6
Issue number	4
DOIs	https://doi.org/10.1063/1.5010210
State	Published - 1 Apr 2018
Externally published	Yes

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title = "Bi-functional effects of lengthening aliphatic chain of phthalimide-based negative redox couple and its non-aqueous flow battery performance at stack cell",

abstract = "Effects of lengthening an aliphatic chain of a phthalimide-based negative redox couple for non-aqueous flow batteries are examined. The working voltage and solubility of N-butylphthalimide are 0.1 V lower and four times greater (2.0 M) than those of methyl-substituted phthalimide. These enhanced properties are attributed to a lower packing density. Consequently, the energy density of the proposed redox couple is greatly enhanced from butyl substitution. Furthermore, the results of the stack flow cell test with N,N,N′,N′-tetramethyl-p-phenylenediamine positive redox couple show advantageous features of this non-aqueous flow battery system: a stable Coulombic efficiency and high working voltage.",

author = "Kim, \{Hyun Seung\} and Seunghae Hwang and Youngjin Kim and Ryu, \{Ji Heon\} and Oh, \{Seung M.\} and Kim, \{Ki Jae\}",

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T1 - Bi-functional effects of lengthening aliphatic chain of phthalimide-based negative redox couple and its non-aqueous flow battery performance at stack cell

AU - Kim, Hyun Seung

AU - Hwang, Seunghae

AU - Kim, Youngjin

AU - Ryu, Ji Heon

AU - Oh, Seung M.

AU - Kim, Ki Jae

PY - 2018/4/1

Y1 - 2018/4/1

N2 - Effects of lengthening an aliphatic chain of a phthalimide-based negative redox couple for non-aqueous flow batteries are examined. The working voltage and solubility of N-butylphthalimide are 0.1 V lower and four times greater (2.0 M) than those of methyl-substituted phthalimide. These enhanced properties are attributed to a lower packing density. Consequently, the energy density of the proposed redox couple is greatly enhanced from butyl substitution. Furthermore, the results of the stack flow cell test with N,N,N′,N′-tetramethyl-p-phenylenediamine positive redox couple show advantageous features of this non-aqueous flow battery system: a stable Coulombic efficiency and high working voltage.

AB - Effects of lengthening an aliphatic chain of a phthalimide-based negative redox couple for non-aqueous flow batteries are examined. The working voltage and solubility of N-butylphthalimide are 0.1 V lower and four times greater (2.0 M) than those of methyl-substituted phthalimide. These enhanced properties are attributed to a lower packing density. Consequently, the energy density of the proposed redox couple is greatly enhanced from butyl substitution. Furthermore, the results of the stack flow cell test with N,N,N′,N′-tetramethyl-p-phenylenediamine positive redox couple show advantageous features of this non-aqueous flow battery system: a stable Coulombic efficiency and high working voltage.

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DO - 10.1063/1.5010210

M3 - Article

AN - SCOPUS:85038413415

SN - 2166-532X

VL - 6

JO - APL Materials

JF - APL Materials

IS - 4

M1 - 047901

ER -

Bi-functional effects of lengthening aliphatic chain of phthalimide-based negative redox couple and its non-aqueous flow battery performance at stack cell

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