Improve the comprehensive property of carbon paper for PEMFC by using a novel phenol formaldehyde resin modified with MXene

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-06-13 DOI:10.1016/j.colsurfa.2025.137495

Jiahao Feizheng , Bangai Meng , Daliang Guo , Bo Jiang , Hua Chen , Yinchao Xu , Xin Zhang , Chengliang Duan

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引用次数: 0

Abstract

In this study, a novel method to enhance the comprehensive property of carbon paper (CP) by using phenol formaldehyde resin (PF) modified with MXene was investigated. The effects of different MXene modification ratios on the mechanical property, electrical resistivity, air permeability and electrochemical characterization of hot-pressed CP and CP were discussed. Compared to unmodified CP, the tensile strength and flexural strength of modified CP showed a trend of first increasing and then decreasing with the increase of MXene modification ratio. 10 % MXene modified CP occurred the maximum tensile strength, flexural strength, and the lowest electrical resistivity, the best performance were 4.14 MPa, 62.64 MPa and 3.48 mΩ·cm, respectively. As the MXene modification ratio increased from 0 % to 10 %, the limiting current density of PEMFC was increased from 950 mA/cm² to 1457 mA/cm², and the limiting power density was increased from 295.2 mW/cm² to 468.7 mW/cm². However, as the MXene modification ratio continued to increase to 14 %, the limiting current density and power density of PEMFC were decreased to 1347.5 mA/cm² and 438.75 mW/cm² respectively. Therefore, the novel MXene modification method of CP provides new insights into enhancing the electrochemical characterization of PEMFC, potentially addressing issues related to low electrical resistivity and mechanical stability affecting PEMFC performance.

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采用MXene改性酚醛树脂改善PEMFC用炭纸的综合性能

研究了MXene改性酚醛树脂提高复写纸（CP）综合性能的新方法。讨论了不同MXene改性率对热压CP和CP的力学性能、电阻率、透气性和电化学性能的影响。与未改性CP相比，改性CP的抗拉强度和抗弯强度随MXene改性率的增加呈现先升高后降低的趋势。10 % MXene改性CP的抗拉强度最大，抗折强度最低，电阻率最低，性能最佳，分别为4.14 MPa、62.64 MPa和3.48 mΩ·cm。随着MXene改性率从0 %增加到10 %，PEMFC的极限电流密度从950 mA/cm2增加到1457 mA/cm2，极限功率密度从295.2 mW/cm2增加到468.7 mW/cm2。然而，随着MXene改性率继续增加到14 %，PEMFC的极限电流密度和功率密度分别下降到1347.5 mA/cm2和438.75 mW/cm2。因此，CP的新型MXene改性方法为增强PEMFC的电化学表征提供了新的见解，有可能解决影响PEMFC性能的低电阻率和机械稳定性相关问题。

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

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.