Transition metal-based high entropy alloy microfiber electrodes: Corrosion behavior and hydrogen activity

Baran Sarac; Vladislav Zadorozhnyy; Yurii P. Ivanov; Florian Spieckermann; Semen Klyamkin; Elena Berdonosova; Mikhail Serov; Sergey Kaloshkin; A. Lindsay Greer; A. Sezai Sarac; Jürgen Eckert

doi:10.1016/j.corsci.2021.109880

Transition metal-based high entropy alloy microfiber electrodes: Corrosion behavior and hydrogen activity

Baran Sarac, Vladislav Zadorozhnyy, Yurii P. Ivanov, Florian Spieckermann, Semen Klyamkin, Elena Berdonosova, Mikhail Serov, Sergey Kaloshkin, A. Lindsay Greer, A. Sezai Sarac, Jürgen Eckert

Chair of Materials Physics (430)

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

Abstract

This contribution reveals ultra-high corrosion resistance of high entropy alloys (HEAs), i.e. Ti20Zr20Nb15V15Hf15Ta15 of 1.85 µm yr–1 in alkaline environment, adverting their use for battery/fuel cell components. Formation of several nanometers passive oxide layer confirmed by scanning transmission electron microscopy accounts for corrosion resistance which increases with TiOx content. Cathodic Tafel slope of 67 mV dec–1 and large transfer coefficient of 0.82 obtained for Ti20Zr20Nb20V20Ta20 suggest its use for hydrogen electrocatalysis. High amounts of hydrogen storage, 1.7 wt% in Ti25Zr25Nb15V15Ta20, were confirmed by gas-solid reactions. This HEA also has high corrosion resistance in acidic and saline environments ideal for coatings and surgical tools/implants.

Original language	English
Article number	109880
Number of pages	10
Journal	Corrosion science
Volume	193.2021
Issue number	December
Early online date	12 Oct 2021
DOIs	https://doi.org/10.1016/j.corsci.2021.109880
Publication status	Published - Dec 2021

Bibliographical note

Keywords

Alkaline corrosion
EIS
gas-solid reactions
High entropy alloy
Passive film
STEM

Access to Document

10.1016/j.corsci.2021.109880

Cite this

Sarac, B., Zadorozhnyy, V., Ivanov, Y. P., Spieckermann, F., Klyamkin, S., Berdonosova, E., Serov, M., Kaloshkin, S., Greer, A. L., Sarac, A. S., & Eckert, J. (2021). Transition metal-based high entropy alloy microfiber electrodes: Corrosion behavior and hydrogen activity. Corrosion science, 193.2021(December), Article 109880. https://doi.org/10.1016/j.corsci.2021.109880

@article{d00f497a63a44764aa8e240e44fcab2f,

title = "Transition metal-based high entropy alloy microfiber electrodes: Corrosion behavior and hydrogen activity",

abstract = "This contribution reveals ultra-high corrosion resistance of high entropy alloys (HEAs), i.e. Ti20Zr20Nb15V15Hf15Ta15 of 1.85 µm yr–1 in alkaline environment, adverting their use for battery/fuel cell components. Formation of several nanometers passive oxide layer confirmed by scanning transmission electron microscopy accounts for corrosion resistance which increases with TiOx content. Cathodic Tafel slope of 67 mV dec–1 and large transfer coefficient of 0.82 obtained for Ti20Zr20Nb20V20Ta20 suggest its use for hydrogen electrocatalysis. High amounts of hydrogen storage, 1.7 wt% in Ti25Zr25Nb15V15Ta20, were confirmed by gas-solid reactions. This HEA also has high corrosion resistance in acidic and saline environments ideal for coatings and surgical tools/implants.",

keywords = "Alkaline corrosion, EIS, gas-solid reactions, High entropy alloy, Passive film, STEM",

author = "Baran Sarac and Vladislav Zadorozhnyy and Ivanov, {Yurii P.} and Florian Spieckermann and Semen Klyamkin and Elena Berdonosova and Mikhail Serov and Sergey Kaloshkin and Greer, {A. Lindsay} and Sarac, {A. Sezai} and J{\"u}rgen Eckert",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2021",

month = dec,

doi = "10.1016/j.corsci.2021.109880",

language = "English",

volume = "193.2021",

journal = "Corrosion science",

issn = "0010-938X",

publisher = "Elsevier",

number = "December",

}

TY - JOUR

T1 - Transition metal-based high entropy alloy microfiber electrodes

T2 - Corrosion behavior and hydrogen activity

AU - Sarac, Baran

AU - Zadorozhnyy, Vladislav

AU - Ivanov, Yurii P.

AU - Spieckermann, Florian

AU - Klyamkin, Semen

AU - Berdonosova, Elena

AU - Serov, Mikhail

AU - Kaloshkin, Sergey

AU - Greer, A. Lindsay

AU - Sarac, A. Sezai

AU - Eckert, Jürgen

PY - 2021/12

Y1 - 2021/12

N2 - This contribution reveals ultra-high corrosion resistance of high entropy alloys (HEAs), i.e. Ti20Zr20Nb15V15Hf15Ta15 of 1.85 µm yr–1 in alkaline environment, adverting their use for battery/fuel cell components. Formation of several nanometers passive oxide layer confirmed by scanning transmission electron microscopy accounts for corrosion resistance which increases with TiOx content. Cathodic Tafel slope of 67 mV dec–1 and large transfer coefficient of 0.82 obtained for Ti20Zr20Nb20V20Ta20 suggest its use for hydrogen electrocatalysis. High amounts of hydrogen storage, 1.7 wt% in Ti25Zr25Nb15V15Ta20, were confirmed by gas-solid reactions. This HEA also has high corrosion resistance in acidic and saline environments ideal for coatings and surgical tools/implants.

AB - This contribution reveals ultra-high corrosion resistance of high entropy alloys (HEAs), i.e. Ti20Zr20Nb15V15Hf15Ta15 of 1.85 µm yr–1 in alkaline environment, adverting their use for battery/fuel cell components. Formation of several nanometers passive oxide layer confirmed by scanning transmission electron microscopy accounts for corrosion resistance which increases with TiOx content. Cathodic Tafel slope of 67 mV dec–1 and large transfer coefficient of 0.82 obtained for Ti20Zr20Nb20V20Ta20 suggest its use for hydrogen electrocatalysis. High amounts of hydrogen storage, 1.7 wt% in Ti25Zr25Nb15V15Ta20, were confirmed by gas-solid reactions. This HEA also has high corrosion resistance in acidic and saline environments ideal for coatings and surgical tools/implants.

KW - Alkaline corrosion

KW - EIS

KW - gas-solid reactions

KW - High entropy alloy

KW - Passive film

KW - STEM

UR - http://www.scopus.com/inward/record.url?scp=85120702013&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2021.109880

DO - 10.1016/j.corsci.2021.109880

M3 - Article

AN - SCOPUS:85120702013

SN - 0010-938X

VL - 193.2021

JO - Corrosion science

JF - Corrosion science

IS - December

M1 - 109880

ER -

Transition metal-based high entropy alloy microfiber electrodes: Corrosion behavior and hydrogen activity

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Cite this