Hydrophobic Quaternized Poly(fluorene) Ionomers for Emerging Fuel Cells

被引：15

作者：

Adhikari, Santosh ^{[1
]}

Leonard, Daniel P. ^{[1
]}

Lim, Katie H. ^{[1
]}

Park, Eun Joo ^{[1
]}

Fujimoto, Cy ^{[2
]}

Morales-Collazo, Oscar ^{[3
]}

Brennecke, Joan F. ^{[3
]}

Hu, Zhendong ^{[4
]}

Jia, Hongfei ^{[4
]}

Kim, Yu Seung ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Mat Synth & Integrated Devices Grp, Los Alamos, NM 87545 USA

[2] Sandia Natl Labs, Nanoscale Sci Dept, Albuquerque, NM 87185 USA

[3] Univ Texas Austin, McKetta Dept Chem Engn, Austin, TX 78712 USA

[4] Toyota Res Inst North Amer, Ann Arbor, MI 48105 USA

来源：

ACS APPLIED ENERGY MATERIALS | 2022年 / 5卷 / 03期

关键词：

poly(fluorene); polymer electrolytes; hydrophobicity; ionomer; electrode; anion-exchange membrane; fuel cells; quaternized; MEMBRANES; ADSORPTION; OPERATION; POLYMERS;

D O I：

10.1021/acsaem.2c00119

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：

Quaternized polymers as electrode ionomeric binders enable fuel cell operation under high-pH or anhydrous conditions. Herein we report quaternized poly(fluorene) ionomers with controlled hydrophobicity (contact angle of electrodes with the ionomers 109-164 degrees) by changing the length of tethered fluoroalkyl chains. The anion-exchange membrane fuel cell employing the hydrophobic ionomer exhibits improved durability (voltage loss 0.41 mV h-1) through better water management. The high-temperature proton-exchange-membrane fuel cell using the ionomer shows superior H2/air performance (1.7 A cm-2 at 0.4 V). The finding in this study highlights the benefits of hydrophobic ionomers for emerging fuel cell applications.

引用

页码：2663 / 2668

页数：6

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