Applications of poly ionic liquids in proton exchange membrane fuel cells: A review

被引:45
作者
Elwan, Hosni Ahmed [1 ,2 ]
Thimmappa, Ravikumar [1 ]
Mamlouk, Mohamed [1 ]
Scott, Keith [1 ]
机构
[1] Newcastle Univ, Sch Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
[2] Egyptian Petr Res Inst EPRI, Petr Refining Div, Cairo 11727, Egypt
关键词
Polymerized ionic liquid; Polymer electrolyte membrane fuel cell; Membrane; Ion gel; PBI; Oxygen reduction reaction (ORR); OXYGEN REDUCTION REACTION; DOPED POLYBENZIMIDAZOLE MEMBRANES; FUNCTIONALIZED MESOPOROUS SILICA; IN-SITU POLYMERIZATION; N-C CATALYST; PHOSPHORIC-ACID; ELECTROLYTE MEMBRANES; COMPOSITE MEMBRANES; POLY(IONIC LIQUID)S; CONDUCTING MEMBRANES;
D O I
10.1016/j.jpowsour.2021.230371
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
Poly ionic liquids (ILs), also known as polymeric ILs, are a particular class of polymers since they acquire conventional features of polymers and keep some unique characteristics of ILs, including high thermal and electrochemical stabilities and good ionic conductivity. Either IL's cation or anion can constitute the backbone of poly ILs with free mobile anion or cation, respectively. Therefore, unlike inert polymers, poly ILs are considered as charged polymers. Thus, increasing research efforts are devoted to employing poly ILs in many advanced electrochemical applications like fuel cells and batteries. The present review article concentrates on the applications of poly ILs in polymer electrolyte membrane fuel cells (PEMFCs). Firstly, a review of the different approaches to applying poly ILs in polymer electrolyte membranes (PEMs) is introduced. Also, associated properties of poly ILs membranes, such as mechanical properties, conductivity, and thermal stability are described. In addition, an assessment of their performance in PEMFC is included. Secondly, the contributions of poly ILs in improving the cathodic oxygen reduction reaction (ORR) of PEMFC either as an ionomer or a cathodic catalyst layer modified with poly IL are reviewed. Recommendations and future outlooks for improved usage and employment of poly ILs in PEMFCs are presented.
引用
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页数:29
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