微波辅助合成出氧反应用硫化镍/硫化铁（NiS2/Fe7S8）棒

IF 2.6 4区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

ChemNanoMat Pub Date : 2025-05-10 DOI:10.1002/cnma.202500001

Shraddhanjali Senapati, Rajaram Bal, Bijayalaxmi Jena

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引用次数: 0

摘要

通过电解从水等可再生资源中生产氢燃料是生产氢燃料的有效方法。在这个过程中，需要一种高效、廉价、耐用的电催化剂来分解水分子。本文采用微波法制备了用于水裂解反应的棒状硫化镍/硫化铁（NiS2/Fe7S8）电催化剂。NiS2/Fe7S8在25 mA cm−2 （η25）和40 mA cm−2 （η40）电流密度下的过电位分别为250 mV和300 mV，在碱性电解质中析氧反应的Tafel斜率值为26 mV dec−1。具有低阻抗、高电化学表面积、45 h的电化学稳定性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Microwave-Assisted Synthesis of Nickel Sulfide/Iron Sulfide (NiS2/Fe7S8) Rods for Oxygen Evolution Reaction

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Microwave-Assisted Synthesis of Nickel Sulfide/Iron Sulfide (NiS2/Fe7S8) Rods for Oxygen Evolution Reaction

Generation of hydrogen fuel from renewable sources like water via electrolysis is an effective process to produce it. For this process an efficient, inexpensive, and durable electrocatalyst is required for splitting of water molecules. Herein, a rod-shaped nickel sulfide/iron sulfide (NiS₂/Fe₇S₈) electrocatalyst is fabricated for the water splitting reaction by the microwave method. NiS₂/Fe₇S₈ exhibits a very low overpotential of 250 and 300 mV at current densities of 25 mA cm⁻² (η₂₅) and 40 mA cm⁻² (η₄₀), respectively, and a Tafel slope value of 26 mV dec⁻¹ for oxygen evolution reaction in a basic electrolyte. It shows electrochemical stability of 45 h with low impedance and high electrochemical surface area.

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来源期刊

ChemNanoMat Energy-Energy Engineering and Power Technology

CiteScore

6.10

自引率

2.60%

发文量

236

期刊介绍： ChemNanoMat is a new journal published in close cooperation with the teams of Angewandte Chemie and Advanced Materials, and is the new sister journal to Chemistry—An Asian Journal.