Synthesis of Fe3O4 embedded LIG via laser ablation of PI/Fe(acac)3 film for enhanced electrocatalytic hydrogen evolution

IF 1.8 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Express Pub Date : 2024-08-08 DOI:10.1088/2053-1591/ad68cd

Dun Wu, Nan Wang, Jiaming Zhao, Jiaqi Liu, Rudong Zhou, Junfeng Cheng and Chunlin Liu

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Abstract

Hydrogen production via electrocatalytic water splitting is generally considered as an efficient and eco-friendly strategy for energy storage. The exploration of novel electrocatalytic cathode material towards hydrogen evolution reaction (HER) has never ended. Laser induced graphene (LIG), as a cheap and porous material with large surface area, not only can be used as a carrier of active substances for collaborative catalysis towards hydrogen evolution, but also can be directly used as catalytic electrode via heteroatoms doping. We synthesized Fe3O4 embedded LIG via laser ablation of polyimide (PI)/Fe(acac)3 film and tested its HER electrocatalytic performance. An overpotential of 269 mV was obtained under the current density of 10 mA cm−2 with a slight current decay in the 10 h chronoamperometric examination in 1 M KOH electrolyte. This work provides an insight into methods of optimizing electrochemical properties and improving catalytic activity of LIG based materials. The performance of our Fe3O4 embedded LIG demonstrates the potential of LIG based materials as next generation HER electrocatalyst.

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通过激光烧蚀 PI/Fe(acac)3 薄膜合成嵌入 Fe3O4 的 LIG，增强电催化氢气进化能力

人们普遍认为，通过电催化分水制氢是一种高效、环保的储能策略。针对氢进化反应（HER）的新型电催化阴极材料的探索从未停止过。激光诱导石墨烯（LIG）作为一种廉价且比表面积大的多孔材料，不仅可以作为活性物质的载体协同催化氢气进化，还可以通过掺杂杂原子直接用作催化电极。我们通过激光烧蚀聚酰亚胺（PI）/Fe(acac)3 薄膜合成了嵌入 Fe3O4 的 LIG，并测试了其 HER 电催化性能。在 1 M KOH 电解液中，电流密度为 10 mA cm-2 时，过电位为 269 mV，10 h 的计时电流测试中电流略有衰减。这项研究为优化基于 LIG 的材料的电化学特性和提高其催化活性的方法提供了启示。我们的嵌入式 Fe3O4 LIG 的性能证明了基于 LIG 的材料作为下一代 HER 电催化剂的潜力。

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来源期刊

Materials Research Express MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

4.50

自引率

4.30%

发文量

640

审稿时长

12 weeks

期刊介绍： A broad, rapid peer-review journal publishing new experimental and theoretical research on the design, fabrication, properties and applications of all classes of materials.