Enhanced performance of flexible polymer electrolyte membrane fuel cells with functional interlayer of heat- and acid-treated carbon nanotube sheets

IF 10.5 2区材料科学 Q1 CHEMISTRY, PHYSICAL Carbon Pub Date : 2025-02-01 DOI:10.1016/j.carbon.2024.119880

Junseo Youn , Gyutae Park , Jiwon Beak , Junghyun Park , Hyoun-Myoung Oh , Seonghyeon Yang , Juho Na , Dongjin Kim , Jooyoung Lim , Hyemin Kim , Youngjin Jeong , Taehyun Park

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Abstract

In recent years, the development of flexible power sources has become a crucial research area due to the rapid advancement of flexible electronic devices. Among these, the flexible polymer electrolyte membrane fuel cells (PEMFCs) have attracted considerable attention. However, flexible PEMFCs still exhibit low power density. Here, the study aims to enhance the performance of flexible PEMFCs using carbon nanotube (CNT) sheets.

In this study, we inserted raw and purified CNT sheets into flexible PEMFCs and compared their performance. The results showed that the flexible PEMFC with purified CNT sheets performed well at all curvatures, especially at κ = 0 m^-¹, where it outperformed other flexible PEMFCs by 78%, and at κ = 15.6 m^-1, the peak power density reached 103.2 mW cm^-². This improvement was attributed to the improved contact resistance due to the modified surface of the purified CNT sheets.

This research demonstrates the potential to enhance the performance of flexible PEMFCs through a simple method, contributing significantly to the commercialization and industrial application of flexible power source technology.

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来源期刊

Carbon 工程技术-材料科学：综合

CiteScore

20.80

自引率

7.30%

发文量

审稿时长

23 days

期刊介绍： The journal Carbon is an international multidisciplinary forum for communicating scientific advances in the field of carbon materials. It reports new findings related to the formation, structure, properties, behaviors, and technological applications of carbons. Carbons are a broad class of ordered or disordered solid phases composed primarily of elemental carbon, including but not limited to carbon black, carbon fibers and filaments, carbon nanotubes, diamond and diamond-like carbon, fullerenes, glassy carbon, graphite, graphene, graphene-oxide, porous carbons, pyrolytic carbon, and other sp2 and non-sp2 hybridized carbon systems. Carbon is the companion title to the open access journal Carbon Trends. Relevant application areas for carbon materials include biology and medicine, catalysis, electronic, optoelectronic, spintronic, high-frequency, and photonic devices, energy storage and conversion systems, environmental applications and water treatment, smart materials and systems, and structural and thermal applications.