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FeF(3)/(Acetylene Black and Multi-Walled Carbon Nanotube) Composite for Cathode Active Material of Thermal Battery through Formation of Conductive Network Channels

Considerable research is being conducted on the use of FeF(3) as a cathode replacement for FeS(2) in thermal batteries. However, FeF(3) alone is inefficient as a cathode active material because of its low electrical conductivity due to its wide bandgap (5.96 eV). Herein, acetylene black and multi-wa...

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Autores principales: Kim, Su Hyeong, Choi, Ji-Hyeok, Park, So Hyun, Ahn, Tae Young, Cheong, Hae-Won, Yoon, Young Soo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10609788/
https://www.ncbi.nlm.nih.gov/pubmed/37887934
http://dx.doi.org/10.3390/nano13202783
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author Kim, Su Hyeong
Choi, Ji-Hyeok
Park, So Hyun
Ahn, Tae Young
Cheong, Hae-Won
Yoon, Young Soo
author_facet Kim, Su Hyeong
Choi, Ji-Hyeok
Park, So Hyun
Ahn, Tae Young
Cheong, Hae-Won
Yoon, Young Soo
author_sort Kim, Su Hyeong
collection PubMed
description Considerable research is being conducted on the use of FeF(3) as a cathode replacement for FeS(2) in thermal batteries. However, FeF(3) alone is inefficient as a cathode active material because of its low electrical conductivity due to its wide bandgap (5.96 eV). Herein, acetylene black and multi-walled carbon nanotubes (MWCNTs) were combined with FeF(3), and the ratio was optimized. When acetylene black and MWCNTs were added separately to FeF(3), the electrical conductivity increased, but the mechanical strength decreased. When acetylene black and MWCNTs were both added to FeF(3), the FeF(3)/M(1)AB(4) sample (with 1 wt.% MWCNTs and 4% AB) afforded a discharge capacity of approximately 74% of the theoretical capacity (712 mAh/g) of FeF(3). Considering the electrical conductivity and mechanical strength, this composition was confirmed to be the most suitable.
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spelling pubmed-106097882023-10-28 FeF(3)/(Acetylene Black and Multi-Walled Carbon Nanotube) Composite for Cathode Active Material of Thermal Battery through Formation of Conductive Network Channels Kim, Su Hyeong Choi, Ji-Hyeok Park, So Hyun Ahn, Tae Young Cheong, Hae-Won Yoon, Young Soo Nanomaterials (Basel) Article Considerable research is being conducted on the use of FeF(3) as a cathode replacement for FeS(2) in thermal batteries. However, FeF(3) alone is inefficient as a cathode active material because of its low electrical conductivity due to its wide bandgap (5.96 eV). Herein, acetylene black and multi-walled carbon nanotubes (MWCNTs) were combined with FeF(3), and the ratio was optimized. When acetylene black and MWCNTs were added separately to FeF(3), the electrical conductivity increased, but the mechanical strength decreased. When acetylene black and MWCNTs were both added to FeF(3), the FeF(3)/M(1)AB(4) sample (with 1 wt.% MWCNTs and 4% AB) afforded a discharge capacity of approximately 74% of the theoretical capacity (712 mAh/g) of FeF(3). Considering the electrical conductivity and mechanical strength, this composition was confirmed to be the most suitable. MDPI 2023-10-17 /pmc/articles/PMC10609788/ /pubmed/37887934 http://dx.doi.org/10.3390/nano13202783 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kim, Su Hyeong
Choi, Ji-Hyeok
Park, So Hyun
Ahn, Tae Young
Cheong, Hae-Won
Yoon, Young Soo
FeF(3)/(Acetylene Black and Multi-Walled Carbon Nanotube) Composite for Cathode Active Material of Thermal Battery through Formation of Conductive Network Channels
title FeF(3)/(Acetylene Black and Multi-Walled Carbon Nanotube) Composite for Cathode Active Material of Thermal Battery through Formation of Conductive Network Channels
title_full FeF(3)/(Acetylene Black and Multi-Walled Carbon Nanotube) Composite for Cathode Active Material of Thermal Battery through Formation of Conductive Network Channels
title_fullStr FeF(3)/(Acetylene Black and Multi-Walled Carbon Nanotube) Composite for Cathode Active Material of Thermal Battery through Formation of Conductive Network Channels
title_full_unstemmed FeF(3)/(Acetylene Black and Multi-Walled Carbon Nanotube) Composite for Cathode Active Material of Thermal Battery through Formation of Conductive Network Channels
title_short FeF(3)/(Acetylene Black and Multi-Walled Carbon Nanotube) Composite for Cathode Active Material of Thermal Battery through Formation of Conductive Network Channels
title_sort fef(3)/(acetylene black and multi-walled carbon nanotube) composite for cathode active material of thermal battery through formation of conductive network channels
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10609788/
https://www.ncbi.nlm.nih.gov/pubmed/37887934
http://dx.doi.org/10.3390/nano13202783
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