Ru nanoclusters immobilized in N-doped porous carbon for efficient hydrazine-assisted hydrogen production and Zn–hydrazine battery

IF 9.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Rare Metals Pub Date : 2025-01-23 DOI:10.1007/s12598-024-03053-5

Jun-Lin Huang, Hao Zhang, Tian-Yi Suo, Joao Cunha, Zhi-Peng Yu, Wen-Yuan Xu, Liang Chen, Zhao-Hui Hou, Hong Yin

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引用次数: 0

Abstract

Hydrazine-assisted water electrolysis presents a promising and efficient hydrogen production technology. However, developing high-performance hydrazine oxidation reaction (HzOR) and hydrogen evolution reaction (HER) bifunctional catalysts remains challenging. Here, we report a bifunctional electrocatalyst of Ru NCs@NPC, embedding the ultrafine Ru nanoclusters into N-doped porous carbon via microwave reduction. Due to the ultrafine Ru nanoclusters and N doping, the composite exhibits exceptional activity for both HER and HzOR, requiring −55 and −67 mV to reach 10 mA·cm⁻² in alkaline media. In the overall hydrazine splitting (OHzS) system, Ru NCs@NPC is used as both anode and cathode materials, achieving 10 mA·cm⁻² only at 0.036 V. The zinc hydrazine (Zn–Hz) battery assembled with Ru NCs@NPC cathode and Zn foil anode can provide a stable voltage of 0.4 V and exhibit 98.5% energy efficiency. Therefore, integrating Zn–Hz battery with OHzS system enables self-powered H₂ evolution. The density function theory calculations reveal that the Ru–N bond increases the metal–support interaction,

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氮掺杂多孔碳中钌纳米团簇的固定化及其用于高效肼辅助制氢和锌肼电池

联氨辅助电解水是一种很有前途的高效制氢技术。然而，开发高性能的肼氧化反应（HzOR）和析氢反应（HER）双功能催化剂仍然是一个挑战。在这里，我们报道了Ru NCs@NPC的双功能电催化剂，通过微波还原将超细Ru纳米团簇嵌入到n掺杂的多孔碳中。由于超细的Ru纳米团簇和N掺杂，复合材料在碱性介质中表现出优异的HER和HzOR活性，需要−55和−67 mV才能达到10 mA·cm−2。在整个肼分裂（OHzS）系统中，Ru NCs@NPC作为阳极和阴极材料，仅在0.036 V下即可达到10 mA·cm−2。以Ru NCs@NPC阴极和Zn箔阳极组装的锌肼（Zn - hz）电池可以提供0.4 V的稳定电压，并具有98.5%的能量效率。因此，将Zn-Hz电池与OHzS系统集成，可以实现自供电的氢气演化。密度泛函理论计算表明，Ru-N键增加了金属-载体相互作用；

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Rare Metals 工程技术-材料科学：综合

CiteScore

12.10

自引率

12.50%

发文量

2919

审稿时长

2.7 months

期刊介绍： Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.