Bimetallic Ni-Mo nitride@C3N4 for highly active and stable water catalysis

IF 2.5 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Frontiers of Materials Science Pub Date : 2022-07-27 DOI:10.1007/s11706-022-0613-9

Xinping Li, Min Zhou, Zhuoxun Yin, Xinzhi Ma, Yang Zhou

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引用次数: 2

Abstract

Non-noble metal electrocatalysts for water cracking have excellent prospects for development of sustainable and clean energy. Highly efficient electrocatalysts for the oxygen evolution reaction (OER) are very important for various energy storage and conversion systems such as water splitting devices and metal-air batteries. This study prepared a NiMo₄@C₃N₄ catalyst for OER and hydrogen evolution reaction (HER) by simple methods. The catalyst exhibited an excellent OER activity based on the response at a suitable temperature. To drive a current density of 10 mA·cm⁻² for OER and HER, the overpotentials required for NiMo₄@C₃N₄-800 (prepared at 800 °C) were 259 and 118 mV, respectively. A two-electrode system using NiMo₄@C₃N₄-800 needed a very low cell potential of 1.572 V to reach a current density of 10 mA·cm⁻². In addition, this catalyst showed excellent durability after long-term tests. It was seen to have good catalytic activity and broad application prospects.

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双金属Ni-Mo nitride@C3N4高活性和稳定的水催化

非贵金属水裂化电催化剂具有良好的可持续清洁能源发展前景。高效的析氧反应电催化剂对于各种能量存储和转换系统，如水分解装置和金属-空气电池是非常重要的。本研究用简单的方法制备了OER和析氢反应(HER)的NiMo4@C3N4催化剂。在合适的温度下，催化剂表现出良好的OER活性。为了驱动OER和HER的电流密度为10 mA·cm−2,NiMo4@C3N4-800(800℃制备)所需的过电位分别为259和118 mV。使用NiMo4@C3N4-800的双电极系统需要1.572 V的极低电池电位才能达到10 mA·cm−2的电流密度。此外，经过长期试验，该催化剂表现出优异的耐久性。具有良好的催化活性和广阔的应用前景。

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来源期刊

Frontiers of Materials Science MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

4.20

自引率

3.70%

发文量

515

期刊介绍： Frontiers of Materials Science is a peer-reviewed international journal that publishes high quality reviews/mini-reviews, full-length research papers, and short Communications recording the latest pioneering studies on all aspects of materials science. It aims at providing a forum to promote communication and exchange between scientists in the worldwide materials science community. The subjects are seen from international and interdisciplinary perspectives covering areas including (but not limited to): Biomaterials including biomimetics and biomineralization; Nano materials; Polymers and composites; New metallic materials; Advanced ceramics; Materials modeling and computation; Frontier materials synthesis and characterization; Novel methods for materials manufacturing; Materials performance; Materials applications in energy, information and biotechnology.