材料科学
聚合物
电解质
膜
化学工程
聚苯乙烯
高分子化学
纤维素
Nafion公司
聚合
共聚物
复合材料
电极
化学
生物化学
物理化学
电化学
工程类
作者
Tomohiro Nohara,Toshihiko Arita,Keisuke Tabata,Takaaki Saito,Ryuichiro Shimada,Haruki Nakazaki,Yukina Suzuki,Ryota Sato,Akito Masuhara
标识
DOI:10.1021/acsami.1c18695
摘要
Low-acidity polymer electrolyte membranes are essential to polymer electrolyte fuel cells (PEFCs) and water electrolysis systems, both of which are expected to be next-generation energy and hydrogen sources. We developed a new type of high-performance polymer electrolyte membrane (PEM) in which the core particles are precisely electrolyte polymer coated and filled into binder resin. Cellulose nanocrystals (CNCs), which have attracted attention as light, rigid, and sustainable materials, were selected as the core material for the filler. The CNC surface was coated with a new block copolymer containing a proton conductive polymer of poly(vinylphosphonic acid) (PVPA) and a hydrophobic polymer of polystyrene (PS) using RAFT polymerization with particles (PwP) we developed. The pelletized fillers and the filler-filled polycarbonate membranes achieved proton conductivities of over 10-2 S/cm with lower activation energies and much weaker acidity than the Nafion membrane.
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