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Synthesis of density-multiplied Pt-NP arrays and their application in fuel cell by self-assembly of di-block copolymer
Gan, Yuan1,2,3; Wang, Zhi-da1,2; Shi, Yan1,2; Guo, Chang-qing1,2; Tan, Hong-yi1,2; Lu, Zhuo-xin1,2; Yan, Chang-feng1,2,3
2018-09-01
发表期刊ELECTROCHIMICA ACTA
ISSN0013-4686
卷号283页码:1-10
通讯作者Wang, Zhi-da(wangzd@ms.giec.ac.cn) ; Yan, Chang-feng(yancf@ms.giec.ac.cn)
摘要Self-assembly of di-blcok copolymers (di-BCs) with precise control on morphologies and structures of nanomaterials makes it a promising technology for catalyst preparation. However, applications of the BC-synthesized Pt nanoparticles (NPs) on fuel cell have less been discussed. The major challenge may be the difficulty in achieving high-density nanopatterns which require a low degree of polymerization but a high effective segment-segment interaction parameter of the BC templates. As a resolution, sequentially double-or triple-layered BC route provides a new density-increased idea of harnessing these materials. In present work, monolayer of ordered and high-dispersed Pt-NP arrays with a density 27-folded has been achieved by the multiple di-BC routes consisted of identical self-assembly and plasma-cleaning processes. The multiplication has been proved to be equivalent to the duplication and oriented translation of the initial Pt-NP arrays, which provides not only a well-defined approach to control the spacing precisely, but also a bottom-up process to synthesize hexagonal-arranged arrays with predicable densities. Electrochemistry shows that the density multiplication has no negative effects on the Pt utilization of the monolayer arrays, and a remarkable ECSA value of similar to 114.5 m(2) g(-1) is found. Further characterization of the monolayer arrays as cathodic catalysts for PEMFC reveals that, neither the ohmic losses nor the mass-transport losses are enhanced after the density multiplication, and the power density of the PEMFC assembled here is significantly higher than that using commercial Pt/C catalysts. All the results demonstrate that the multiple di-BC approach has great potential in preparation of BC-synthesized Pt-NP arrays for fuel cell applications. (C) 2018 Elsevier Ltd. All rights reserved.
关键词Di-BC Density multiplication Pt-NP arrays Cathodic catalysts PEMFC
DOI10.1016/j.electacta.2018.05.153
关键词[WOS]TRIBLOCK COPOLYMER ; POLYMER ELECTROLYTE ; TRANSPORT PHENOMENA ; MASS-TRANSPORT ; NANOPARTICLES ; PERFORMANCE ; MECHANISM ; MICELLES ; ALLOY ; SIZE
收录类别SCI
语种英语
资助项目Natural Science Foundation of Guangdong Province[2015A030312007] ; Natural Science Foundation of Guangdong Province[2015A030313716] ; Natural Science Foundation of Guangdong Province[2017A030310539] ; National Natural Science Foundation of China[51576201] ; Key Lab of Renewable Energy Foundation of Chinese Academy of Sciences[Y707j81001]
WOS研究方向Electrochemistry
项目资助者Natural Science Foundation of Guangdong Province ; National Natural Science Foundation of China ; Key Lab of Renewable Energy Foundation of Chinese Academy of Sciences
WOS类目Electrochemistry
WOS记录号WOS:000441077900001
出版者PERGAMON-ELSEVIER SCIENCE LTD
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/23788
专题中国科学院广州能源研究所
通讯作者Wang, Zhi-da; Yan, Chang-feng
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Hydrogen Prod & Utilizat Lab, Guangzhou 510640, Guangdong, Peoples R China
2.Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou 510640, Guangdong, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
第一作者单位中国科学院广州能源研究所
推荐引用方式
GB/T 7714
Gan, Yuan,Wang, Zhi-da,Shi, Yan,et al. Synthesis of density-multiplied Pt-NP arrays and their application in fuel cell by self-assembly of di-block copolymer[J]. ELECTROCHIMICA ACTA,2018,283:1-10.
APA Gan, Yuan.,Wang, Zhi-da.,Shi, Yan.,Guo, Chang-qing.,Tan, Hong-yi.,...&Yan, Chang-feng.(2018).Synthesis of density-multiplied Pt-NP arrays and their application in fuel cell by self-assembly of di-block copolymer.ELECTROCHIMICA ACTA,283,1-10.
MLA Gan, Yuan,et al."Synthesis of density-multiplied Pt-NP arrays and their application in fuel cell by self-assembly of di-block copolymer".ELECTROCHIMICA ACTA 283(2018):1-10.
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