FeS2纳米颗粒嵌入还原氧化石墨烯制备高性能电催化剂

IF 24.4 1区 材料科学 Q1 CHEMISTRY, PHYSICAL
Yanan Chen, Shaomao Xu, Yuanchang Li, Rohit Jiji Jacob, Yudi Kuang, Boyang Liu, Yilin Wang, Glenn Pastel, Lourdes G. Salamanca-Riba, Michael R. Zachariah, Liangbing Hu
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引用次数: 119

摘要

开发低成本、高效、稳定的析氢电催化剂对于通过电化学水分解大规模生产清洁和可持续的氢燃料至关重要。本研究提出了一种简单的方法来合成纳米结构的黄铁矿-相过渡金属二硫化物作为电化学制氢的高活性、富土催化剂。二硫化铁(FeS2)纳米颗粒通过电流诱导的高温快速热冲击(≈12 ms)在粉碎的黄铁矿粉末上原位加载并稳定在还原氧化石墨烯(RGO)上。嵌入在氧化石墨烯之间的FeS2纳米颗粒表现出显著改善的HER电催化性能,在过电位低至139 mV时实现10 mA cm - 2电流,而可逆氢电极在酸性条件下具有出色的长期稳定性。本文提出的设计和合成高活性富土纳米材料催化剂的策略为低成本和大规模的电化学能源应用铺平了道路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

FeS2 Nanoparticles Embedded in Reduced Graphene Oxide toward Robust, High-Performance Electrocatalysts

FeS2 Nanoparticles Embedded in Reduced Graphene Oxide toward Robust, High-Performance Electrocatalysts

Developing low-cost, highly efficient, and robust earth-abundant electrocatalysts for hydrogen evolution reaction (HER) is critical for the scalable production of clean and sustainable hydrogen fuel through electrochemical water splitting. This study presents a facile approach for the synthesis of nanostructured pyrite-phase transition metal dichalcogenides as highly active, earth-abundant catalysts in electrochemical hydrogen production. Iron disulfide (FeS2) nanoparticles are in situ loaded and stabilized on reduced graphene oxide (RGO) through a current-induced high-temperature rapid thermal shock (≈12 ms) of crushed iron pyrite powder. FeS2 nanoparticles embedded in between RGO exhibit remarkably improved electrocatalytic performance for HER, achieving 10 mA cm−2 current at an overpotential as low as 139 mV versus a reversible hydrogen electrode with outstanding long-term stability under acidic conditions. The presented strategy for the design and synthesis of highly active earth-abundant nanomaterial catalysts paves the way for low-cost and large-scale electrochemical energy applications.

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来源期刊
Advanced Energy Materials
Advanced Energy Materials CHEMISTRY, PHYSICAL-ENERGY & FUELS
CiteScore
41.90
自引率
4.00%
发文量
889
审稿时长
1.4 months
期刊介绍: Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small. With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics. The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.
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