Homogeneous titanium hydroxide yields hydroxyl decorated nanofiber separator with improved electrolyte uptake and device capacitance

Derek B. Dwyer; Edison E. Mera; Ganesh S. Gudavalli; William E. Bernier; Tara P. Dhakal; Wayne E. Jones

doi:10.1016/j.matlet.2020.129023

Homogeneous titanium hydroxide yields hydroxyl decorated nanofiber separator with improved electrolyte uptake and device capacitance

Derek B. Dwyer, Edison E. Mera, Ganesh S. Gudavalli, William E. Bernier, Tara P. Dhakal, Wayne E. Jones

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

4 Scopus citations

Abstract

Good wettability of separators in batteries and capacitors is crucial for performance. Titanium hydroxide (Ti(OH)_x) has been shown to greatly improve the wettability of polyvinylidene fluoride (PVDF) nanofibers (NFs). In this work, PVDF/Ti(OH)_x NFs were evaluated for their potential use as separators. Results show that PVDF NFs incorporated with Ti(OH)_x have improved electrolyte uptake (EU) between 550 and 1200 EU% compared to untreated PVDF with less than 100 EU%. Significant improvements in capacitance are seen from capacitors utilizing PVDF/Ti(OH)_x NF separators with the best performing PVDF/Ti(OH)_x NF at 15 wt% Ti(OH)_x with 446.8 mF/cm² compared to untreated PVDF NF separator with 262.7 mF/cm².

Original language	English
Article number	129023
Journal	Materials Letters
Volume	284
DOIs	https://doi.org/10.1016/j.matlet.2020.129023
State	Published - Feb 1 2021
Externally published	Yes

Funding

Army Research Office (ARO) W911NF1310235 and Joint Science and Technology Office for Chemical Biological Defense (JSTOCBD) under contract BA13PHM210 at the Edgewood Chemical Biological Center. This experimental work has been carried out with support from the Department of Chemistry at Binghamton University, State University of New York. This work was supported as part of the Multidisciplinary GAANN in Smart Energy Materials, a Graduate Areas of National Need, funded by the U.S. Department of Education, under award #P200A150135. This work was also supported by the National Science Foundation Research Experiences for Undergraduates program award #DMR-1658990. Army Research Office (ARO) W911NF1310235 and Joint Science and Technology Office for Chemical Biological Defense (JSTOCBD) under contract BA13PHM210 at the Edgewood Chemical Biological Center. This experimental work has been carried out with support from the Department of Chemistry at Binghamton University, State University of New York. This work was supported as part of the Multidisciplinary GAANN in Smart Energy Materials, a Graduate Areas of National Need, funded by the U.S. Department of Education, under award #P200A150135. This work was also supported by the National Science Foundation Research Experiences for Undergraduates program award #DMR-1658990.

Funders	Funder number
Department of Chemistry at Binghamton University
Joint Science and Technology Office for Chemical Biological Defense	BA13PHM210
National Science Foundation	-1658990
U.S. Department of Education	200A150135
Army Research Office	W911NF1310235
State University of New York
Edgewood Chemical Biological Center

Keywords

Capacitor
Composite
Electrolyte uptake
Nanofibers
Separator
Titanium

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10.1016/j.matlet.2020.129023

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title = "Homogeneous titanium hydroxide yields hydroxyl decorated nanofiber separator with improved electrolyte uptake and device capacitance",

abstract = "Good wettability of separators in batteries and capacitors is crucial for performance. Titanium hydroxide (Ti(OH)x) has been shown to greatly improve the wettability of polyvinylidene fluoride (PVDF) nanofibers (NFs). In this work, PVDF/Ti(OH)x NFs were evaluated for their potential use as separators. Results show that PVDF NFs incorporated with Ti(OH)x have improved electrolyte uptake (EU) between 550 and 1200 EU% compared to untreated PVDF with less than 100 EU%. Significant improvements in capacitance are seen from capacitors utilizing PVDF/Ti(OH)x NF separators with the best performing PVDF/Ti(OH)x NF at 15 wt% Ti(OH)x with 446.8 mF/cm2 compared to untreated PVDF NF separator with 262.7 mF/cm2.",

keywords = "Capacitor, Composite, Electrolyte uptake, Nanofibers, Separator, Titanium",

author = "Dwyer, {Derek B.} and {E. Mera}, Edison and Gudavalli, {Ganesh S.} and Bernier, {William E.} and Dhakal, {Tara P.} and Jones, {Wayne E.}",

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doi = "10.1016/j.matlet.2020.129023",

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T1 - Homogeneous titanium hydroxide yields hydroxyl decorated nanofiber separator with improved electrolyte uptake and device capacitance

AU - Dwyer, Derek B.

AU - E. Mera, Edison

AU - Gudavalli, Ganesh S.

AU - Bernier, William E.

AU - Dhakal, Tara P.

AU - Jones, Wayne E.

PY - 2021/2/1

Y1 - 2021/2/1

N2 - Good wettability of separators in batteries and capacitors is crucial for performance. Titanium hydroxide (Ti(OH)x) has been shown to greatly improve the wettability of polyvinylidene fluoride (PVDF) nanofibers (NFs). In this work, PVDF/Ti(OH)x NFs were evaluated for their potential use as separators. Results show that PVDF NFs incorporated with Ti(OH)x have improved electrolyte uptake (EU) between 550 and 1200 EU% compared to untreated PVDF with less than 100 EU%. Significant improvements in capacitance are seen from capacitors utilizing PVDF/Ti(OH)x NF separators with the best performing PVDF/Ti(OH)x NF at 15 wt% Ti(OH)x with 446.8 mF/cm2 compared to untreated PVDF NF separator with 262.7 mF/cm2.

AB - Good wettability of separators in batteries and capacitors is crucial for performance. Titanium hydroxide (Ti(OH)x) has been shown to greatly improve the wettability of polyvinylidene fluoride (PVDF) nanofibers (NFs). In this work, PVDF/Ti(OH)x NFs were evaluated for their potential use as separators. Results show that PVDF NFs incorporated with Ti(OH)x have improved electrolyte uptake (EU) between 550 and 1200 EU% compared to untreated PVDF with less than 100 EU%. Significant improvements in capacitance are seen from capacitors utilizing PVDF/Ti(OH)x NF separators with the best performing PVDF/Ti(OH)x NF at 15 wt% Ti(OH)x with 446.8 mF/cm2 compared to untreated PVDF NF separator with 262.7 mF/cm2.

KW - Capacitor

KW - Composite

KW - Electrolyte uptake

KW - Nanofibers

KW - Separator

KW - Titanium

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VL - 284

JO - Materials Letters

JF - Materials Letters

M1 - 129023

ER -

Homogeneous titanium hydroxide yields hydroxyl decorated nanofiber separator with improved electrolyte uptake and device capacitance

Abstract

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Keywords

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