Enhanced Fe dispersion via “pinning” effect of thiocyanate ion on ferric ion in Fe-N-S-doped catalyst as an excellent oxygen reduction reaction electrode

Chengyong Shu; Yuanzhen Chen; Xiao Dong Yang; Yan Liu; Shaokun Chong; Yuan Fang; Yongning Liu; Wei Hua Yang

doi:10.1016/j.jpowsour.2017.11.093

Enhanced Fe dispersion via “pinning” effect of thiocyanate ion on ferric ion in Fe-N-S-doped catalyst as an excellent oxygen reduction reaction electrode

Chengyong Shu, Yuanzhen Chen, Xiao Dong Yang, Yan Liu, Shaokun Chong, Yuan Fang, Yongning Liu, Wei Hua Yang

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

31 Scopus citations

Abstract

In this study, by using thiocyanate as an iron ion dispersing agent, the pinning effect of thiocyanate ion (SCN⁻) enables the high dispersion of Fe³⁺ in a nitrogen-doped carbon polymer and significantly promotes ORR catalysis in both acidic and alkaline media. It shows 47.3 A g⁻¹ kinetic ORR current density in 0.1 M H₂SO₄ solution at 0.8 V vs. RHE. In addition, SCN⁻ can dope into the base material and modify the surface of catalysts, which generates strong cyanide N functional groups. Additionally, it also has a higher BET surface area and more uniform granularity, which accounts for the enhancement in mass transport.

Original language	English
Pages (from-to)	161-167
Number of pages	7
Journal	Journal of Power Sources
Volume	376
DOIs	https://doi.org/10.1016/j.jpowsour.2017.11.093
State	Published - 1 Feb 2018
Externally published	Yes

Keywords

Acid medium
Direct methanol fuel cell
H/Ofuel cells
Oxygen reduction reaction

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2017.11.093

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title = "Enhanced Fe dispersion via “pinning” effect of thiocyanate ion on ferric ion in Fe-N-S-doped catalyst as an excellent oxygen reduction reaction electrode",

abstract = "In this study, by using thiocyanate as an iron ion dispersing agent, the pinning effect of thiocyanate ion (SCN−) enables the high dispersion of Fe3+ in a nitrogen-doped carbon polymer and significantly promotes ORR catalysis in both acidic and alkaline media. It shows 47.3 A g−1 kinetic ORR current density in 0.1 M H2SO4 solution at 0.8 V vs. RHE. In addition, SCN− can dope into the base material and modify the surface of catalysts, which generates strong cyanide N functional groups. Additionally, it also has a higher BET surface area and more uniform granularity, which accounts for the enhancement in mass transport.",

keywords = "Acid medium, Direct methanol fuel cell, H/Ofuel cells, Oxygen reduction reaction",

author = "Chengyong Shu and Yuanzhen Chen and Yang, {Xiao Dong} and Yan Liu and Shaokun Chong and Yuan Fang and Yongning Liu and Yang, {Wei Hua}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

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doi = "10.1016/j.jpowsour.2017.11.093",

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T1 - Enhanced Fe dispersion via “pinning” effect of thiocyanate ion on ferric ion in Fe-N-S-doped catalyst as an excellent oxygen reduction reaction electrode

AU - Shu, Chengyong

AU - Chen, Yuanzhen

AU - Yang, Xiao Dong

AU - Liu, Yan

AU - Chong, Shaokun

AU - Fang, Yuan

AU - Liu, Yongning

AU - Yang, Wei Hua

PY - 2018/2/1

Y1 - 2018/2/1

N2 - In this study, by using thiocyanate as an iron ion dispersing agent, the pinning effect of thiocyanate ion (SCN−) enables the high dispersion of Fe3+ in a nitrogen-doped carbon polymer and significantly promotes ORR catalysis in both acidic and alkaline media. It shows 47.3 A g−1 kinetic ORR current density in 0.1 M H2SO4 solution at 0.8 V vs. RHE. In addition, SCN− can dope into the base material and modify the surface of catalysts, which generates strong cyanide N functional groups. Additionally, it also has a higher BET surface area and more uniform granularity, which accounts for the enhancement in mass transport.

AB - In this study, by using thiocyanate as an iron ion dispersing agent, the pinning effect of thiocyanate ion (SCN−) enables the high dispersion of Fe3+ in a nitrogen-doped carbon polymer and significantly promotes ORR catalysis in both acidic and alkaline media. It shows 47.3 A g−1 kinetic ORR current density in 0.1 M H2SO4 solution at 0.8 V vs. RHE. In addition, SCN− can dope into the base material and modify the surface of catalysts, which generates strong cyanide N functional groups. Additionally, it also has a higher BET surface area and more uniform granularity, which accounts for the enhancement in mass transport.

KW - Acid medium

KW - Direct methanol fuel cell

KW - H/Ofuel cells

KW - Oxygen reduction reaction

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U2 - 10.1016/j.jpowsour.2017.11.093

DO - 10.1016/j.jpowsour.2017.11.093

M3 - 文章

AN - SCOPUS:85036456822

SN - 0378-7753

VL - 376

SP - 161

EP - 167

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

Enhanced Fe dispersion via “pinning” effect of thiocyanate ion on ferric ion in Fe-N-S-doped catalyst as an excellent oxygen reduction reaction electrode

Abstract

Keywords

UN SDGs

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