气候变化领域集成服务门户(CCPortal): Highly durable fuel cell catalysts using crosslinkable block copolymer-based carbon supports with ultralow Pt loadings

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DOI	10.1039/d0ee01095b
	Highly durable fuel cell catalysts using crosslinkable block copolymer-based carbon supports with ultralow Pt loadings
	Choi J.; Lee Y.J.; Park D.; Jeong H.; Shin S.; Yun H.; Lim J.; Han J.; Kim E.J.; Jeon S.S.; Jung Y.; Lee H.; Kim B.J.
发表日期	2020
ISSN	17545692
起始页码	4921
结束页码	4929
卷号	13 期号:12
英文摘要	Minimizing the use of Pt catalysts in proton exchange membrane fuel cells (PEMFCs) is important, considering its high price and scarcity. Herein, we demonstrate novel catalysts for PEMFCs with exceptionally high mass activity and durability, in which block copolymer-based carbon supports are loaded with an ultra-small amount of Pt. The mass activity measured after 30 000 cycles of single cell tests was 0.81 A mgPt-1 at 0.9 V, which is the highest performance reported to date. The newly developed catalyst yielded nearly the same power density as that of the commercial Pt/C, even with 1/20 of the Pt usage. The carbon supports were prepared by carbonizing crosslinked domains of block copolymer particles selectively, resulting in mesoporous carbon particles with ∼25 nm pores. When Pt was deposited, thin carbon shells were formed encapsulating PtFe nanoparticles, catalyzing the oxygen reduction reaction efficiently with high durability. This journal is © The Royal Society of Chemistry.
英文关键词	Binary alloys; Block copolymers; Carbon; Catalysts; Durability; Electrolytic reduction; Iron alloys; Platinum; Platinum alloys; Fuel cell catalysts; High durability; Mesoporous carbon; Novel catalysts; Power densities; Proton exchange membrane fuel cell (PEMFCs); Pt-Fe nanoparticles; Ultralow pt loadings; Proton exchange membrane fuel cells (PEMFC); carbon; catalysis; catalyst; detection method; fuel cell; platinum; polymer
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189429
作者单位	Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, South Korea
推荐引用方式 GB/T 7714	Choi J.,Lee Y.J.,Park D.,et al. Highly durable fuel cell catalysts using crosslinkable block copolymer-based carbon supports with ultralow Pt loadings[J],2020,13(12).
APA	Choi J..,Lee Y.J..,Park D..,Jeong H..,Shin S..,...&Kim B.J..(2020).Highly durable fuel cell catalysts using crosslinkable block copolymer-based carbon supports with ultralow Pt loadings.Energy & Environmental Science,13(12).
MLA	Choi J.,et al."Highly durable fuel cell catalysts using crosslinkable block copolymer-based carbon supports with ultralow Pt loadings".Energy & Environmental Science 13.12(2020).