聚（芴）基阴离子交换膜在1.5 A cm-2下在水电解槽中表现出优异的耐久性2400小时

IF 24.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Advanced Energy Materials Pub Date : 2025-05-02 DOI:10.1002/aenm.202501038

Haeryang Lim, Nam In Kim, Giwon Shin, Jaehun Lee, Sungryong Kim, Shin-Woo Myeong, Chiho Kim, Sung Mook Choi, Taiho Park

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引用次数: 0

摘要

阴离子交换膜电解槽（AEMWE）是替代质子交换膜电解槽的一种经济高效的绿色制氢技术。然而，AEMWE的商业化主要受到缺乏可靠的阴离子交换膜（AEM）的阻碍。在本研究中，开发了一种结构简单的聚芴基PFAA-QA AEM，具有良好的OH -电导率（80°C时为174.6 mS cm - 1），良好的力学性能（抗拉强度为35mpa，断裂伸长率为51%）和优异的碱性稳定性（80°C时为3m KOH， 2000 h）。这些特性使得基于pfa - qa的AEMWEs具有高电池性能（在70°C和1.95 V下为3.95 a cm - 2）和在高电流密度下（在70°C下为1.5 a cm - 2, 2400小时）的长期耐用性。因此，这些AEMWEs的耐久性超过了大多数具有低电压衰减率（>29 mV kh−1）的AEMWEs。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Poly(fluorene)-Based Anion Exchange Membrane Demonstrating Excellent Durability at 1.5 A cm‒2 for 2400 h in Water Electrolyzers

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Poly(fluorene)-Based Anion Exchange Membrane Demonstrating Excellent Durability at 1.5 A cm‒2 for 2400 h in Water Electrolyzers

Anion exchange membrane water electrolyzer (AEMWE) is a cost-effective alternative to proton exchange membrane water electrolyzer for green hydrogen production. However, AEMWE commercialization is hindered primarily by the lack of a reliable anion exchange membrane (AEM) for long-term cell durability. In this study, a poly(fluorene)-based PFAA-QA AEM is developed with a simple structure, exhibiting satisfactory OH⁻ conductivity (>174.6 mS cm⁻¹ at 80 °C), good mechanical properties (tensile strength >35 MPa and elongation at break >51%), and excellent alkaline stability (>2000 h in 3 m KOH at 80 °C). These characteristics allow PFAA-QA-based AEMWEs to demonstrate a high cell performance (3.95 A cm⁻² at 70 °C and 1.95 V) and long-term durability at high current densities (1.5 A cm⁻² for 2400 h at 70 °C). Therefore, the durability of these AEMWEs surpasses that of most AEMWEs with a low voltage decay rate (>29 mV kh⁻¹).

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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.