合金
甲醇
酰肼
氧气
化学
材料科学
冶金
有机化学
作者
Santosh Semwal,Aiswarya Samal,Saroj K. Nayak,Rajashri R. Urkude,Akhoury Sudhir Kumar Sinha,Umaprasana Ojha
标识
DOI:10.1002/adsu.202400372
摘要
Abstract Strategies to control the size, shape, and lattice arrangement, introduce doping agents, and induce heterostructuring in electrocatalysts are strongly desirable to tailor their activities. Herewith, a one‐pot strategy utilizing polyacryloyl hydrazide (PAHz) as the composition directing agent and metallic Ni surface as the shape directing agent is employed to grow Co 3 O 4 doped NiCu alloy nanocuboids on Ni foam (NF) under hydrothermal conditions for electrocatalytic H 2 production. The resulting bi‐functional electrodes are suitable for methanol oxidation reaction (MOR) coupled green H 2 production with effective energy efficiency. The low overall potential (MOR+HER) of 1.78 V to realize the current density ( j ) value of 100 mA cm −2 and extended durability (100 h@10 mA cm −2 ) along with the selective conversion of methanol to formate support the viability of the NF‐PAHz‐Co 3 O 4 @NiCu for the said operation. The electrode also displays efficacy toward oxygen evolution reaction (OER) activity and j OER value of 100 mA cm −2 is realized at a potential value of 1.65 V RHE with adequate durability. Overall, the synthetic strategy is general, scalable and may be extended to grow other metal oxide doped alloy nanostructures in the future.
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