Development of three-dimensional iron-doped cobalt phosphides nanorod arrays coupled on nickel substrate for effective hydrogen and oxygen production

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2024-07-18 DOI:10.1016/j.materresbull.2024.113003

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引用次数: 0

Abstract

To reach practical generation of hydrogen energy from water, it is necessary to synthesize bifunctional effective and durable electrocatalyst towards hydrogen evolution and oxygen evolution reaction (HER and OER). However, the slow kinetics of HER and OER at the cathode and anode is the main bottleneck. Herein, a novel fabrication nanostructure of iron-doped cobalt phosphides nanorod arrays on a conducting nickel foam substrate (Fe-Co_xP_y NR/NF) is developed with uniform spreading of dopant, high catalytic activity area, rapid efficiency of interfacial charge transfer, and long-time operation by using a facile hydrothermal process and phosphidization. The results displayed that Fe-Co_xP_y NR/NF exhibited an effective overpotential of 98 mV towards HER and 290 mV towards OER at 10 mA cm⁻², which are much lower than those individual Co_xP_y NR and Fe-CoOH NR materials. In addition, the Fe-Co_xP_y NR/NF show significant stability in 1.0 M KOH, compared to commercial materials.

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开发在镍基底上耦合的三维铁掺杂磷化钴纳米棒阵列，用于有效制氢制氧

为了从水中产生实用的氢能，有必要合成双功能、有效且耐用的电催化剂，以实现氢进化和氧进化反应（HER 和 OER）。然而，HER 和 OER 在阴极和阳极的缓慢动力学是主要瓶颈。本文采用简便的水热法和磷化法，在导电泡沫镍基底上制备了掺铁磷化钴纳米棒阵列（Fe-CoxPy NR/NF），该纳米结构具有掺杂均匀、催化活性面积大、界面电荷转移效率高、可长时间工作等特点。结果表明，在 10 mA cm-2 的条件下，Fe-CoxPy NR/NF 对 HER 的有效过电位为 98 mV，对 OER 的有效过电位为 290 mV，远低于单独的 CoxPy NR 和 Fe-CoOH NR 材料。此外，与商用材料相比，Fe-CoxPy NR/NF 在 1.0 M KOH 中显示出显著的稳定性。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.