Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| 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
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| 2018-09-01 | |
| Source Publication | ELECTROCHIMICA ACTA
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| ISSN | 0013-4686 |
| Volume | 283Pages:1-10 |
| Corresponding Author | Wang, Zhi-da(wangzd@ms.giec.ac.cn) ; Yan, Chang-feng(yancf@ms.giec.ac.cn) |
| Abstract | 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. |
| Keyword | Di-BC Density multiplication Pt-NP arrays Cathodic catalysts PEMFC |
| DOI | 10.1016/j.electacta.2018.05.153 |
| WOS Keyword | TRIBLOCK COPOLYMER ; POLYMER ELECTROLYTE ; TRANSPORT PHENOMENA ; MASS-TRANSPORT ; NANOPARTICLES ; PERFORMANCE ; MECHANISM ; MICELLES ; ALLOY ; SIZE |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Electrochemistry |
| Funding Organization | Natural Science Foundation of Guangdong Province ; National Natural Science Foundation of China ; Key Lab of Renewable Energy Foundation of Chinese Academy of Sciences |
| WOS Subject | Electrochemistry |
| WOS ID | WOS:000441077900001 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/23788 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Wang, Zhi-da; Yan, Chang-feng |
| Affiliation | 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 |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation 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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