Annealing-temperature-dependent relation between alloying degree, particle size, and fuel cell performance of PtCo catalysts
文献类型：期刊论文
| 作者 | Zeng, Wei-Jie3; Tong, Lei3; Liu, Jun1,2 ; Liang, Hai-Wei3
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| 刊名 | JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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| 出版日期 | 2022-10-01 |
| 卷号 | 922 |
| 关键词 | PtCo Oxygen reduction reaction Fuel cells Speci fic activity Alloying degree |
| ISSN号 | 1572-6657 |
| DOI | 10.1016/j.jelechem.2022.116728 |
| 通讯作者 | Liu, Jun(jliu@issp.ac.cn) ; Liang, Hai-Wei(hwliang@ustc.edu.cn) |
| 英文摘要 | Pt-M (M is typically 3d transition metal) alloy nanoparticles as the state-of-the-art electrocatalysts exhibit supe-rior activity for the sluggish cathodic oxygen reduction reaction (ORR) in proton-exchange-membrane fuel cells (PEMFCs). The specific activity (SA) of Pt-M alloy catalysts is strongly correlative to their surface compressive strains that are majorly dependent on the M type and content. In order to promote the alloying of Pt with M to improve the SA, a high-temperature annealing is normally inevitable, which however accelerates the metal sin-tering resulting in larger particles and lowers electrochemical surface areas (ECSAs) as well as the high-cur-rent???density PEMFCs performance. Herein, we systematically studied the ORR/PEMFCs performance of a family of PtCo catalysts with varied alloying degree and particle size, which were prepared at different anneal-ing temperatures ranging from 400 to 1000 ??C. We found the annealing-temperature-dependent trade-off rela-tion between the alloying-degree-dependent SA and particle-size-dependent ECSA. The optimal PtCo catalyst was thus achieved at a medium annealing temperature of 600 ??C, showing a high mass activity (MA) of 1.04 A mg???1 and a large rated power density of 1.07 W cm???2 with a low Pt loading of 0.1 mgPt cm???2.
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| WOS关键词 | OXYGEN REDUCTION ; PLATINUM ; NANOPARTICLES ; ELECTROCATALYSTS ; REACTIVITY ; STRAIN ; IMPACT |
| WOS研究方向 | Chemistry ; Electrochemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000859733800015 |
| 出版者 | ELSEVIER SCIENCE SA |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/129791]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Liu, Jun; Liang, Hai-Wei |
| 作者单位 | 1.Anhui Contango New Energy Technol Co Ltd, Hefei 230088, Peoples R China 2.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Solid State Phys, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Hefei Natl Res Ctr Phys Sci Microscale, Dept Chem, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng, Wei-Jie,Tong, Lei,Liu, Jun,et al. Annealing-temperature-dependent relation between alloying degree, particle size, and fuel cell performance of PtCo catalysts[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY,2022,922. |
| APA | Zeng, Wei-Jie,Tong, Lei,Liu, Jun,&Liang, Hai-Wei.(2022).Annealing-temperature-dependent relation between alloying degree, particle size, and fuel cell performance of PtCo catalysts.JOURNAL OF ELECTROANALYTICAL CHEMISTRY,922. |
| MLA | Zeng, Wei-Jie,et al."Annealing-temperature-dependent relation between alloying degree, particle size, and fuel cell performance of PtCo catalysts".JOURNAL OF ELECTROANALYTICAL CHEMISTRY 922(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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