Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Highly Ordered Pt-Based Nanoparticles Directed by the Self-Assembly of Block Copolymers for the Oxygen Reduction Reaction | |
Wang, Zhida1,2; Mai, Yilang1,2,3; Yang, Yi1,2,3; Shen, Lisha1,2; Yan, Changfeng1,2,3
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| 2021-08-18 | |
| Source Publication | ACS APPLIED MATERIALS & INTERFACES
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| ISSN | 1944-8244 |
| Volume | 13Issue:32Pages:38138-38146 |
| Corresponding Author | Wang, Zhida(wangzd@ms.giec.ac.cn) ; Yan, Changfeng(yancf@ms.giec.ac.cn) |
| Abstract | Designing Pt-based nanoparticle (NP) catalysts is of great interest for the lowering of Pt usage and the enhancement of catalytic activity on the proton-exchange membrane fuel cells (PEMFCs). However, it is still challenging to develop well-arrayed catalyst NPs on supports over multiple-length scales. Herein, we presented a facile strategy of producing well-ordered Pt-based NPs toward oxygen reduction reaction (ORR) catalysts assisted by the self-assembly of block copolymers. In contrast to the conventional Pt/C ORR catalysts with a random dispersion on carbon, the as-prepared Pt, PtCo, and PtCo@Pt NPs in our work were hexagonally arranged with a uniform quasi-spherical shape and ordered distribution. The systematic study related to their ORR activities revealed that the PtCo@Pt core-shell NP arrays were more active and more durable than PtCo, Pt, and the commercial Pt/C catalyst. In the rotating-disk electrode test, a half-wave potential (E-1/2) of 0.86 V versus RHE and a 4-e ORR mechanism were found for PtCo@Pt. Single-cell performance showed that the current density and the peak power density of PtCo@Pt achieved 0.86 A/cm(2)@0.7 V and 1.05 W/cm(2), respectively, with a Pt loading of similar to 0.15 mg/cm(2) on the cathode. Also, they held 81.4 and 82.9% retention, respectively, after the durability test in the single-cell test. Density functional theory calculation results revealed that PtCo@Pt NPs had a lower d-band center and a weaker oxygen binding energy compared to Pt and PtCo, which contributed to the enhancement of the ORR activity. |
| Keyword | well-ordered nanoparticles Pt-based catalyst self-assembly core-shell ORR |
| DOI | 10.1021/acsami.1c04259 |
| WOS Keyword | SHELL ; CO ; ELECTROCATALYSTS ; EFFICIENT ; CATALYST ; NI ; EVOLUTION ; OXIDATION ; PT(111) ; ORIGIN |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | DNL Cooperation Fund of CAS[DNL180405] ; Natural Science Foundation of Guangdong Province[2015A030312007] ; Natural Science Foundation of Guangdong Province[2017A030310539] ; Natural Science Foundation of Guangdong Province[2018A050506071] ; Guangzhou Science and Technology Project[201904010412] ; Guangzhou Science and Technology Project[202002030349] |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science |
| Funding Organization | DNL Cooperation Fund of CAS ; Natural Science Foundation of Guangdong Province ; Guangzhou Science and Technology Project |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000687172000017 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/33661 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Wang, Zhida; Yan, Changfeng |
| Affiliation | 1.Chinese Acad Sci, Hydrogen Prod & Utilizat Lab, CAS Key Lab Renewable Energy, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou 510640, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Zhida,Mai, Yilang,Yang, Yi,et al. Highly Ordered Pt-Based Nanoparticles Directed by the Self-Assembly of Block Copolymers for the Oxygen Reduction Reaction[J]. ACS APPLIED MATERIALS & INTERFACES,2021,13(32):38138-38146. |
| APA | Wang, Zhida,Mai, Yilang,Yang, Yi,Shen, Lisha,&Yan, Changfeng.(2021).Highly Ordered Pt-Based Nanoparticles Directed by the Self-Assembly of Block Copolymers for the Oxygen Reduction Reaction.ACS APPLIED MATERIALS & INTERFACES,13(32),38138-38146. |
| MLA | Wang, Zhida,et al."Highly Ordered Pt-Based Nanoparticles Directed by the Self-Assembly of Block Copolymers for the Oxygen Reduction Reaction".ACS APPLIED MATERIALS & INTERFACES 13.32(2021):38138-38146. |
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