Plasma-Driven Synthesis of Self-Supported Nickel-Iron Nanostructures for Water Electrolysis,Advanced Materials Interfaces

当前位置： X-MOL 学术 › Adv. Mater. Interfaces › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Plasma-Driven Synthesis of Self-Supported Nickel-Iron Nanostructures for Water Electrolysis
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2023-09-04 , DOI: 10.1002/admi.202300486
Ameya Ranade _{1,

2} , Mengmeng Lao ₁ , Remco H.M. Timmer ₁ , Erwin Zoethout ₁ , Hans J.N. van Eck ₁ , Mihalis N. Tsampas ₁

Affiliation

Nickel-based electrocatalysts are deemed as promising low-cost, earth-abundant materials in the development of the next-generation alkaline and anion exchange membrane water electrolyzers. Herein, a plasma-processing technique is presented for fabricating self-supported nanostructures from planar NiFe substrates and its performance for water splitting reactions. Irradiating the samples with helium plasma results in the formation of nano-tendrils, which are affixed to the metallic substrate. This unique design not only enhances charge and mass transport, but also increases the electrochemical surface area by 3 to4 times, as compared to the unmodified/planar surfaces. For the benchmark 10 mAcm⁻²_geo current density, the nanostructured electrodes demonstrate overpotentials of 330 and 354 mV for oxygen evolution reaction and hydrogen evolution reaction respectively in 1 M- KOH. Moving forward, application of this technique can be extended for fabricating self-supported 3D substrates (e.g., foams, felts, perforated sheets), all of which find practical applications in energy conversion and storage devices.

中文翻译：

用于水电解的自支撑镍铁纳米结构的等离子体驱动合成

镍基电催化剂被认为是开发下一代碱性和阴离子交换膜水电解槽的有前途的低成本、地球资源丰富的材料。本文提出了一种等离子体处理技术，用于从平面 NiFe 基底制造自支撑纳米结构及其水分解反应的性能。用氦等离子体照射样品会形成纳米卷须，并将其固定在金属基材上。这种独特的设计不仅增强了电荷和质量传输，而且与未改性/平面表面相比，电化学表面积增加了 3 至 4 倍。对于基准10 mAcm ^-2_{geo电流密度，纳米结构电极在1 M}- KOH中的析氧反应和析氢反应分别表现出330和354 mV的过电势。展望未来，该技术的应用可以扩展到制造自支撑 3D 基材（例如泡沫、毛毡、穿孔板），所有这些都在能量转换和存储设备中找到了实际应用。

更新日期：2023-09-04

点击分享查看原文

点击收藏

公开下载

阅读更多本刊新发论文本刊介绍/投稿指南