TY - JOUR
T1 - High entropy promoted active site in layered double hydroxide for ultra-stable oxygen evolution reaction electrocatalyst
AU - Nguyen, Thi Xuyen
AU - Tsai, Chia Chien
AU - Nguyen, Van Thanh
AU - Huang, Yan Jia
AU - Su, Yen Hsun
AU - Li, Siang Yun
AU - Xie, Rui Kun
AU - Lin, Yu Jung
AU - Lee, Jyh Fu
AU - Ting, Jyh Ming
N1 - Funding Information:
This work was supported by the National Science and Technology Council in Taiwan under Grant Number NSTC 111-2224-E-006-005. The use of [EM000800] JEOL JEM-2100F Cs STEM in the Core Facility Center of National Cheng Kung University is acknowledged.
Funding Information:
This work was supported by the National Science and Technology Council in Taiwan under Grant Number NSTC 111-2224-E-006-005. The use of [EM000800] JEOL JEM-2100F Cs STEM in the Core Facility Center of National Cheng Kung University is acknowledged.
Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/6/15
Y1 - 2023/6/15
N2 - In this study, high entropy layered double hydroxide (LDH) grown on nickel foam using a simple hydrothermal method is reported. The high entropy LDH consisting of five different non-noble transition metals of Fe, Ni, Co, Mn, and Cr (denoted as FeNiCoMnCr) exhibits an excellent OER activity in alkaline condition with a low overpotential of 218 mV at a current density of 50 mA cm−2. It is superior to the binary, ternary, and quaternary-metal LDHs. We demonstrate that the high entropy FeNiCoMnCr LDH possesses ultra-stable electrochemical stability at a high current density of 400 mA cm−2 for 600 h, which is the best stability of all the reported high entropy material electrocatalysts so far. The interaction among the multi-metal components along with the resulting electronic structure modulation facilitates the formation of highly-active γ-NiOOH species, significantly boosting catalytic activity; while the high entropy induced phase stability contributes to the superior durability.
AB - In this study, high entropy layered double hydroxide (LDH) grown on nickel foam using a simple hydrothermal method is reported. The high entropy LDH consisting of five different non-noble transition metals of Fe, Ni, Co, Mn, and Cr (denoted as FeNiCoMnCr) exhibits an excellent OER activity in alkaline condition with a low overpotential of 218 mV at a current density of 50 mA cm−2. It is superior to the binary, ternary, and quaternary-metal LDHs. We demonstrate that the high entropy FeNiCoMnCr LDH possesses ultra-stable electrochemical stability at a high current density of 400 mA cm−2 for 600 h, which is the best stability of all the reported high entropy material electrocatalysts so far. The interaction among the multi-metal components along with the resulting electronic structure modulation facilitates the formation of highly-active γ-NiOOH species, significantly boosting catalytic activity; while the high entropy induced phase stability contributes to the superior durability.
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U2 - 10.1016/j.cej.2023.143352
DO - 10.1016/j.cej.2023.143352
M3 - Article
AN - SCOPUS:85158895054
SN - 1385-8947
VL - 466
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 143352
ER -