Single-walled carbon Nanotube-Encapsulated polyoxometalates for Wide-Range humidity PEM fuel cells

IF 7.5 1区工程技术 Q2 ENERGY & FUELS

Fuel Pub Date : 2026-08-15 Epub Date: 2026-02-11 DOI:10.1016/j.fuel.2026.138688

Chenyu Liu , Qinghao Lin , Jujia Zhang , Qin Liu , Xianglong Wan , Wentuan Bi

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引用次数: 0

Abstract

Reducing platinum usage and broadening the operating humidity range are crucial for the commercialization of proton exchange membrane fuel cells (PEMFCs). This study designed a proton-conducting composite through anchoring polyoxometalates onto single-walled carbon nanotubes (POM@SWCNT). The obtained POM@SWCNT was integrated into the membrane electrode assembly (MEA) as a conductive skeleton to enhance the local proton-electron coupled environment at the platinum (Pt) catalyst interface, thereby facilitating oxygen reduction reaction (ORR) kinetics and reducing overall proton transfer resistance across wide humidity range. The introduction of POM@SWCNT increased the electrochemical active area (ECSA) and mass activity (MA) of Pt by 62 % and 33 %, respectively. The proton resistance of the prepared MEA reduces 60 % compared with the conventional MEA at 40 % relative humidity (RH) and 80 °C. This strategy offers a highly promising new technical pathway for developing high-performance fuel cells under wide humidity conditions and low Pt loadings.

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用于大范围湿度PEM燃料电池的单壁碳纳米管封装多金属氧酸盐

减少铂的使用和扩大工作湿度范围对质子交换膜燃料电池（pemfc）的商业化至关重要。本研究通过将多金属氧酸盐锚定在单壁碳纳米管上设计了一种质子导电复合材料（POM@SWCNT）。获得的POM@SWCNT作为导电骨架集成到膜电极组件（MEA）中，以增强铂（Pt）催化剂界面处的局部质子-电子耦合环境，从而促进氧还原反应（ORR）动力学并降低宽湿度范围内的整体质子转移阻力。POM@SWCNT的引入使Pt的电化学活性面积（ECSA）和质量活性（MA）分别提高62%和33%。在相对湿度为40%、温度为80℃的条件下，制备的MEA的质子电阻比传统MEA降低了60%。该策略为开发宽湿度条件下低铂负载的高性能燃料电池提供了一条非常有前途的新技术途径。

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

Fuel 工程技术-工程：化工

CiteScore

12.80

自引率

20.30%

发文量

3506

审稿时长

64 days

期刊介绍： The exploration of energy sources remains a critical matter of study. For the past nine decades, fuel has consistently held the forefront in primary research efforts within the field of energy science. This area of investigation encompasses a wide range of subjects, with a particular emphasis on emerging concerns like environmental factors and pollution.