Functionalized Graphene Nanofiber-Incorporated Fumion Anion-Exchange Membranes with Enhanced Alkaline Stability and Fuel-Cell Performances

被引：32

作者：

Arunkumar, Iyappan ^{[1
]}

Gokulapriyan, Ramasamy ^{[1
]}

Sakthivel, Venkitesan ^{[1
]}

Kim, Ae Rhan ^{[1
,2
]}

Oh, Min Suk ^{[3
]}

Lee, Jae Young ^{[4
]}

Kim, Seonyeob ^{[5
]}

Lee, Sunyoup ^{[5
]}

Yoo, Dong Jin ^{[1
,2
]}

机构：

[1] Jeonbuk Natl Univ, Hydrogen & Fuel Cell Res Ctr, Convers Engn Grad Sch BK21 FOUR, Dept Energy Storage, Jeonju Si 54896, Jeollabuk Do, South Korea

[2] Jeonbuk Natl Univ, Dept Life Sci, Jeonju Si 54896, Jeollabuk Do, South Korea

[3] Jeonbuk Natl Univ, Div Adv Mat Engn, Jeonju Si 54896, Jeollabuk Do, South Korea

[4] Woosuk Univ, Hydrogen Fuel Cell Ctr, Jeollabuk Do 55315, South Korea

[5] Korea Inst Machinery & Mat, KIMM Inst Carbon Neutral Energy Machinery, Dept Mobil Power Res, Ecofriendly Energy Convers Res Div, Daejeon 34103, South Korea

来源：

ACS APPLIED ENERGY MATERIALS | 2023年 / 6卷 / 14期

基金：

新加坡国家研究基金会;

关键词：

anion-exchange membrane; graphene nanofiber; hydroxide conductivity; fumion; alkaline compositemembrane; QUATERNARY AMMONIUM CATIONS; POLYMER; CONDUCTIVITY; CATALYST;

D O I：

10.1021/acsaem.3c01182

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Anion-exchange membranes (AEMs) with high hydroxide conductivity,strong alkaline stability, and outstanding single-cell performanceare in great demand for use in fuel cells and water electrolyzer applications.In this study, carboxylic acid-functionalized graphene nanofibers(c-GNF) were used as an effective filler to improve the electrochemicaland physicochemical characteristics of the commercial FAA3 for anion-exchangemembrane fuel-cell (AEMFC) application. The effects of c-GNF incorporationon the structural, morphological, and electrochemical performancesof the composite membrane were systematically investigated. Introducingc-GNF into the FAA3 matrix increased the electrochemical performanceand physicochemical stability of FAA3 membranes. Notably, the nanocompositemembrane containing 1.70 wt % of c-GNF reached a maximum hydroxideconductivity of 58.8 mS cm(-1) at 90 & DEG;C, whereasthe pristine FAA3 presented only 28.7 mS cm(-1). Inaddition, the maximum peak power density (PPD) of 115.9 mW cm(-2) was observed for the FAGNF at 1.70 wt % in a H-2/O-2 AEMFC at 60 & DEG;C. Moreover, the alkalinestability test demonstrated that c-GNF inclusion had a significantinfluence on membrane chemical stability by retaining the conductivityup to 71% after 500 h of immersion in 5 M NaOH at 60 & DEG;C. Overall,this study demonstrates the enhancement of properties of a commercialmembrane for AEMFC application.

引用

页码：7702 / 7713

页数：12

共 52 条

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