Transition metal-based high entropy alloy microfiber electrodes: Corrosion behavior and hydrogen activity
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In: Corrosion science, Vol. 193.2021, No. December, 109880, 12.2021.
Research output: Contribution to journal › Article › Research › peer-review
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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
N1 - Publisher Copyright: © 2021 Elsevier Ltd
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
VL - 193.2021
JO - Corrosion science
JF - Corrosion science
SN - 0010-938X
IS - December
M1 - 109880
ER -