Highly Ordered Pt-Based Nanoparticles Directed by the Self-Assembly of Block Copolymers for the Oxygen Reduction Reaction

doi:10.1021/acsami.1c04259

	Highly Ordered Pt-Based Nanoparticles Directed by the Self-Assembly of Block Copolymers for the Oxygen Reduction Reaction
	Wang, Zhida 2,3; Mai, Yilang 1,2,3; Yang, Yi 1,2,3; Shen, Lisha 2,3; Yan, Changfeng 1,2,3
刊名	ACS APPLIED MATERIALS & INTERFACES
	2021-08-18
卷号	13 期号:32 页码:38138-38146
关键词	well-ordered nanoparticles Pt-based catalyst self-assembly core-shell ORR
ISSN号	1944-8244
DOI	10.1021/acsami.1c04259
通讯作者	Wang, Zhida(wangzd@ms.giec.ac.cn) ; Yan, Changfeng(yancf@ms.giec.ac.cn)
英文摘要	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.
资助项目	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关键词	SHELL ; CO ; ELECTROCATALYSTS ; EFFICIENT ; CATALYST ; NI ; EVOLUTION ; OXIDATION ; PT(111) ; ORIGIN
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000687172000017
资助机构	DNL Cooperation Fund of CAS ; Natural Science Foundation of Guangdong Province ; Guangzhou Science and Technology Project
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/33660]
专题	中国科学院广州能源研究所
通讯作者	Wang, Zhida; Yan, Changfeng
作者单位	1.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 2.Chinese Acad Sci, Hydrogen Prod & Utilizat Lab, CAS Key Lab Renewable Energy, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 3.Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou 510640, Peoples R China
推荐引用方式 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.