TY - JOUR
T1 - Methanol steam mediated corrosion engineering towards high-entropy NiFe layered double hydroxide for ultra-stable oxygen evolution
AU - Gao, Jinqiang
AU - Yuan, Haifeng
AU - Du, Xinjuan
AU - Dong, Feng
AU - Zhou, Yu
AU - Na, Shengnan
AU - Chen, Yanpeng
AU - Hu, Mingyu
AU - Hong, Mei
AU - Yang, Shihe
N1 - Funding Information:
This work was supported by the Guangdong Science and Technology Program (No. 2023A0505010018), the National Natural Science Foundation of China (No. 22309155), and the Shenzhen Science and Technology Program (No. JCYJ20200109140421071).
Publisher Copyright:
© 2024 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.
PY - 2025/1
Y1 - 2025/1
N2 - Rational design of viable routes to obtain efficient and stable oxygen evolution reaction (OER) electrocatalysts remains challenging, especially under industrial conditions. Here, we provide a solvent-steam assisted corrosion engineering strategy to directly fabricate high-entropy NiFe-LDH with spatially resolved structural order. Ammonium fluoride in methanol steam enables the formation of nanosheets while Fe3+ effectively enhances their adhesion to the semi-sacrificial nickel-iron foam (NFF), thereby conjuring up a NiFe-LDH@NFF catalyst that exhibits remarkable adaptability to robust electrochemical activation yet with excellent stability. Comprehensive measurements reveal the in-situ formation of high-valance metal oxyhydroxide and the enhancement of adsorption-desorption process. Under the industrial condition (6 mol/L KOH, 60 °C), the NiFe-LDH@NFF exhibits excellent activity of 50 mA/cm2 at 1.55 V and high durability of over 120 h at 200 mA/cm2. We anticipate that the steam assisted strategy could promote the development of efficient non-precious electrocatalysts for hydrogen energy.
AB - Rational design of viable routes to obtain efficient and stable oxygen evolution reaction (OER) electrocatalysts remains challenging, especially under industrial conditions. Here, we provide a solvent-steam assisted corrosion engineering strategy to directly fabricate high-entropy NiFe-LDH with spatially resolved structural order. Ammonium fluoride in methanol steam enables the formation of nanosheets while Fe3+ effectively enhances their adhesion to the semi-sacrificial nickel-iron foam (NFF), thereby conjuring up a NiFe-LDH@NFF catalyst that exhibits remarkable adaptability to robust electrochemical activation yet with excellent stability. Comprehensive measurements reveal the in-situ formation of high-valance metal oxyhydroxide and the enhancement of adsorption-desorption process. Under the industrial condition (6 mol/L KOH, 60 °C), the NiFe-LDH@NFF exhibits excellent activity of 50 mA/cm2 at 1.55 V and high durability of over 120 h at 200 mA/cm2. We anticipate that the steam assisted strategy could promote the development of efficient non-precious electrocatalysts for hydrogen energy.
KW - Corrosion engineering
KW - High-entropy material
KW - NiFe-LDH
KW - Oxygen evolution reaction
KW - Stability
UR - http://www.scopus.com/inward/record.url?scp=85207735734&partnerID=8YFLogxK
U2 - 10.1016/j.cclet.2024.110232
DO - 10.1016/j.cclet.2024.110232
M3 - Journal article
AN - SCOPUS:85207735734
SN - 1001-8417
VL - 36
JO - Chinese Chemical Letters
JF - Chinese Chemical Letters
IS - 1
M1 - 110232
ER -