Carbon nanotube sheet as a current collector for low-temperature solid oxide fuel cells

Wonjong Yu; Hyeonjun Song; Youngjin Jeong; Taehyun Park; Suk Won Cha

doi:10.1016/j.ceramint.2023.04.157

Carbon nanotube sheet as a current collector for low-temperature solid oxide fuel cells

Wonjong Yu, Hyeonjun Song, Youngjin Jeong, Taehyun Park, Suk Won Cha

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

Abstract

The utilization of Carbon Nanotube (CNT) sheets as current collectors for Solid Oxide Fuel Cells (SOFCs) was investigated in this study. A direct spinning method was employed for the synthesis of the 15 μm thick CNT sheet, which demonstrated high efficiency and cost-effectiveness. The material properties of the CNT sheet were characterized as a cathodic current collector and were subsequently integrated into 500 μm thick yttria-stabilized zirconia pellet-based SOFCs. The electrochemical performance of the SOFCs was evaluated at a temperature of 500 °C, resulting in a significant increase of 34.7% compared to the traditional SOFCs employing Pt mesh current collectors. Electrochemical Impedance Spectroscopy (EIS) analysis was performed to demonstrate that the observed performance enhancement was attributed to a reduction in both ohmic and charge transfer resistance. This highlights the potential of CNT sheet current collectors in not only decreasing ohmic resistance but also facilitating the reaction kinetics in solid oxide cells.

Original language	English
Pages (from-to)	24077-24083
Number of pages	7
Journal	Ceramics International
Volume	49
Issue number	14
DOIs	https://doi.org/10.1016/j.ceramint.2023.04.157
Publication status	Published - 15 Jul 2023

Bibliographical note

Publisher Copyright:
© 2023 Elsevier Ltd and Techna Group S.r.l.

Keywords

Carbon nanotube sheet
Current collector
Direct spinning method
Electrochemical impedance spectroscopy
Ohmic resistance
Solid oxide fuel cells

Access to Document

10.1016/j.ceramint.2023.04.157

Cite this

@article{9d661e5ade4a458c851b5088946b6935,

title = "Carbon nanotube sheet as a current collector for low-temperature solid oxide fuel cells",

abstract = "The utilization of Carbon Nanotube (CNT) sheets as current collectors for Solid Oxide Fuel Cells (SOFCs) was investigated in this study. A direct spinning method was employed for the synthesis of the 15 μm thick CNT sheet, which demonstrated high efficiency and cost-effectiveness. The material properties of the CNT sheet were characterized as a cathodic current collector and were subsequently integrated into 500 μm thick yttria-stabilized zirconia pellet-based SOFCs. The electrochemical performance of the SOFCs was evaluated at a temperature of 500 °C, resulting in a significant increase of 34.7% compared to the traditional SOFCs employing Pt mesh current collectors. Electrochemical Impedance Spectroscopy (EIS) analysis was performed to demonstrate that the observed performance enhancement was attributed to a reduction in both ohmic and charge transfer resistance. This highlights the potential of CNT sheet current collectors in not only decreasing ohmic resistance but also facilitating the reaction kinetics in solid oxide cells.",

keywords = "Carbon nanotube sheet, Current collector, Direct spinning method, Electrochemical impedance spectroscopy, Ohmic resistance, Solid oxide fuel cells",

author = "Wonjong Yu and Hyeonjun Song and Youngjin Jeong and Taehyun Park and Cha, {Suk Won}",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd and Techna Group S.r.l.",

year = "2023",

month = jul,

day = "15",

doi = "10.1016/j.ceramint.2023.04.157",

language = "English",

volume = "49",

pages = "24077--24083",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd.",

number = "14",

}

TY - JOUR

T1 - Carbon nanotube sheet as a current collector for low-temperature solid oxide fuel cells

AU - Yu, Wonjong

AU - Song, Hyeonjun

AU - Jeong, Youngjin

AU - Park, Taehyun

AU - Cha, Suk Won

PY - 2023/7/15

Y1 - 2023/7/15

N2 - The utilization of Carbon Nanotube (CNT) sheets as current collectors for Solid Oxide Fuel Cells (SOFCs) was investigated in this study. A direct spinning method was employed for the synthesis of the 15 μm thick CNT sheet, which demonstrated high efficiency and cost-effectiveness. The material properties of the CNT sheet were characterized as a cathodic current collector and were subsequently integrated into 500 μm thick yttria-stabilized zirconia pellet-based SOFCs. The electrochemical performance of the SOFCs was evaluated at a temperature of 500 °C, resulting in a significant increase of 34.7% compared to the traditional SOFCs employing Pt mesh current collectors. Electrochemical Impedance Spectroscopy (EIS) analysis was performed to demonstrate that the observed performance enhancement was attributed to a reduction in both ohmic and charge transfer resistance. This highlights the potential of CNT sheet current collectors in not only decreasing ohmic resistance but also facilitating the reaction kinetics in solid oxide cells.

AB - The utilization of Carbon Nanotube (CNT) sheets as current collectors for Solid Oxide Fuel Cells (SOFCs) was investigated in this study. A direct spinning method was employed for the synthesis of the 15 μm thick CNT sheet, which demonstrated high efficiency and cost-effectiveness. The material properties of the CNT sheet were characterized as a cathodic current collector and were subsequently integrated into 500 μm thick yttria-stabilized zirconia pellet-based SOFCs. The electrochemical performance of the SOFCs was evaluated at a temperature of 500 °C, resulting in a significant increase of 34.7% compared to the traditional SOFCs employing Pt mesh current collectors. Electrochemical Impedance Spectroscopy (EIS) analysis was performed to demonstrate that the observed performance enhancement was attributed to a reduction in both ohmic and charge transfer resistance. This highlights the potential of CNT sheet current collectors in not only decreasing ohmic resistance but also facilitating the reaction kinetics in solid oxide cells.

KW - Carbon nanotube sheet

KW - Current collector

KW - Direct spinning method

KW - Electrochemical impedance spectroscopy

KW - Ohmic resistance

KW - Solid oxide fuel cells

UR - http://www.scopus.com/inward/record.url?scp=85153863144&partnerID=8YFLogxK

U2 - 10.1016/j.ceramint.2023.04.157

DO - 10.1016/j.ceramint.2023.04.157

M3 - Article

AN - SCOPUS:85153863144

SN - 0272-8842

VL - 49

SP - 24077

EP - 24083

JO - Ceramics International

JF - Ceramics International

IS - 14

ER -

Carbon nanotube sheet as a current collector for low-temperature solid oxide fuel cells

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

Cite this