Superior Oxygen Evolution Electrocatalyst based on Ni-Ellagic Acid Coordination Polymer

IF 24.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Advanced Energy Materials Pub Date : 2024-05-11 DOI:10.1002/aenm.202400871

Rui-Lin Chai, Qian Zhao, Jie Li, Zhao-Jun Dong, Yu-Xin Sun, Xiaocong Wang, Penglin Zhang, Wen-Ting Wu, Guang-Yue Li, Jin Zhao, Sheng-Hua Li

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Abstract

The oxygen evolution reaction (OER) is central to energy conversion technologies, but the high cost and scarcity of commercial noble metal catalysts limit their widespread application. Natural products exhibit great potential in preparing high-performance electrocatalysts due to their cost-effectiveness and sustainability. Here, a kind of 1D polymers [M-EA (M═Co, Cu, Ni)] for oxygen evolution reaction via the complexation of ellagic acid (EA) with metal ions are reported. It is found that Ni-EA displays a low overpotential (190 mV at 10 mA cm⁻²) and an ultralow Tafel slope (28 mV dec⁻¹), with a production cost of only 3.6 × 10⁻²% of IrO₂. Density functional theory investigations reveal the electrocatalytic mechanism of the OER. A rechargeable Zn-Air battery using Ni-EA+Pt/C as the air electrode shows a lower charging potential and better cycling stability than the IrO₂+Pt/C-based battery. This work provides a train for the development of state-of-the-art OER catalysts.

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基于 Ni-Ellagic Acid 配位聚合物的卓越氧进化电催化剂

氧进化反应（OER）是能源转换技术的核心，但商用贵金属催化剂的高成本和稀缺性限制了其广泛应用。天然产品因其成本效益和可持续性，在制备高性能电催化剂方面展现出巨大潜力。本文报道了一种通过鞣花酸（EA）与金属离子络合进行氧进化反应的一维聚合物 [M-EA (M═Co, Cu, Ni)]。研究发现，Ni-EA 具有较低的过电位（10 mA cm-2 时为 190 mV）和超低的塔菲尔斜率（28 mV dec-1），生产成本仅为 3.6 × 10-2% IrO2。密度泛函理论研究揭示了 OER 的电催化机制。与基于 IrO2+Pt/C 的电池相比，使用 Ni-EA+Pt/C 作为空气电极的可充电锌-空气电池显示出更低的充电电位和更好的循环稳定性。这项研究为开发最先进的 OER 催化剂提供了思路。

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

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.