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DOI | 10.1126/science.aau0630 |
Ultralow-loading platinum-cobalt fuel cell catalysts derived from imidazolate frameworks | |
Chong, Lina1; Wen, Jianguo2; Kubal, Joseph2,3; Sen, Fatih G.2; Zou, Jianxin4,5; Greeley, Jeffery3; Chan, Maria2; Barkholtz, Heather1; Ding, Wenjiang4,5; Liu, Di-Jia1 | |
2018-12-14 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2018 |
卷号 | 362期号:6420页码:1276-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China |
英文摘要 | Achieving high catalytic performance with the lowest possible amount of platinum is critical for fuel cell cost reduction. Here we describe a method of preparing highly active yet stable electrocatalysts containing ultralow-loading platinum content by using cobalt or bimetallic cobalt and zinc zeolitic imidazolate frameworks as precursors. Synergistic catalysis between strained platinum-cobalt core-shell nanoparticles over a platinum-group metal (PGM)-free catalytic substrate led to excellent fuel cell performance under 1 atmosphere of O-2 or air at both high-voltage and high-current domains. Two catalysts achieved oxygen reduction reaction (ORR) mass activities of 1.08 amperes per milligram of platinum (A mg(Pt)(-1)) and 1.77 A mg(Pt)(-1) and retained 64% and 15% of initial values after 30,000 voltage cycles in a fuel cell. Computational modeling reveals that the interaction between platinum-cobalt nanoparticles and PGM-free sites improves ORR activity and durability. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000452994400049 |
WOS关键词 | OXYGEN REDUCTION REACTION ; NITROGEN-DOPED GRAPHENE ; PT-CO ; ACTIVE-SITES ; PERFORMANCE ; ELECTROCATALYSTS ; ALLOY ; NANOPARTICLES ; DURABILITY ; METALS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/200314 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA; 2.Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA; 3.Purdue Univ, Davidson Sch Chem Engn, 480 Stadium Mall Dr, W Lafayette, IN 47907 USA; 4.Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloys Net Forming, Shanghai 200240, Peoples R China; 5.Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composite, Shanghai 200240, Peoples R China |
推荐引用方式 GB/T 7714 | Chong, Lina,Wen, Jianguo,Kubal, Joseph,et al. Ultralow-loading platinum-cobalt fuel cell catalysts derived from imidazolate frameworks[J]. SCIENCE,2018,362(6420):1276-+. |
APA | Chong, Lina.,Wen, Jianguo.,Kubal, Joseph.,Sen, Fatih G..,Zou, Jianxin.,...&Liu, Di-Jia.(2018).Ultralow-loading platinum-cobalt fuel cell catalysts derived from imidazolate frameworks.SCIENCE,362(6420),1276-+. |
MLA | Chong, Lina,et al."Ultralow-loading platinum-cobalt fuel cell catalysts derived from imidazolate frameworks".SCIENCE 362.6420(2018):1276-+. |
条目包含的文件 | 条目无相关文件。 |
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