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DOI | 10.1126/science.aaw7493 |
Engineering bunched Pt-Ni alloy nanocages for efficient oxygen reduction in practical fuel cells | |
Tian, Xinlong1,2; Zhao, Xiao3; Su, Ya-Qiong4; Wang, Lijuan1; Wang, Hongming5; Dang, Dai6; Chi, Bin7; Liu, Hongfang1; Hensen, Emiel J. M.4; Lou, Xiong Wen (David)8; Xia, Bao Yu1 | |
2019-11-15 | |
发表期刊 | SCIENCE
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ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2019 |
卷号 | 366期号:6467页码:850-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Japan; Netherlands; Singapore |
英文摘要 | Development of efficient and robust electrocatalysts is critical for practical fuel cells. We report one-dimensional bunched platinum-nickel (Pt-Ni) alloy nanocages with a Pt-skin structure for the oxygen reduction reaction that display high mass activity (3.52 amperes per milligram platinum) and specific activity (5.16 milliamperes per square centimeter platinum), or nearly 17 and 14 times higher as compared with a commercial platinum on carbon (Pt/C) catalyst. The catalyst exhibits high stability with negligible activity decay after 50,000 cycles. Both the experimental results and theoretical calculations reveal the existence of fewer strongly bonded platinum-oxygen (Pt-O) sites induced by the strain and ligand effects. Moreover, the fuel cell assembled by this catalyst delivers a current density of 1.5 amperes per square centimeter at 0.6 volts and can operate steadily for at least 180 hours. |
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:000496946200049 |
WOS关键词 | PLATINUM ; NANOPARTICLES ; ELECTROCATALYSTS ; TRANSITION ; NANOWIRES ; STRAIN ; NANOCATALYSTS ; PERFORMANCE ; DURABILITY ; PT3NI(111) |
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/226233 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Wuhan Natl Lab Optoelect,Minist Educ, Hubei Key Lab Mat Chem & Serv Failure,Key Lab Mat, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China; 2.Hainan Univ, State Key Lab Marine Resource Utilizat South Chin, Haikou 570228, Hainan, Peoples R China; 3.Univ Electrocommun, Innovat Res Ctr Fuel Cells, Chofu, Tokyo 1828585, Japan; 4.Eindhoven Univ Technol, Dept Chem Engn & Chem, Lab Inorgan Mat & Catalysis, POB 513, NL-5600 MB Eindhoven, Netherlands; 5.Nanchang Univ, Inst Adv Study, 999 Xuefu Rd, Nanchang, Jiangxi, Peoples R China; 6.Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China; 7.South China Univ Technol, Sch Chem & Chem Engn, Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China; 8.Nanyang Technol Univ, Sch Chem & Biomed Engn, 62 Nanyang Dr, Singapore 637459, Singapore |
推荐引用方式 GB/T 7714 | Tian, Xinlong,Zhao, Xiao,Su, Ya-Qiong,et al. Engineering bunched Pt-Ni alloy nanocages for efficient oxygen reduction in practical fuel cells[J]. SCIENCE,2019,366(6467):850-+. |
APA | Tian, Xinlong.,Zhao, Xiao.,Su, Ya-Qiong.,Wang, Lijuan.,Wang, Hongming.,...&Xia, Bao Yu.(2019).Engineering bunched Pt-Ni alloy nanocages for efficient oxygen reduction in practical fuel cells.SCIENCE,366(6467),850-+. |
MLA | Tian, Xinlong,et al."Engineering bunched Pt-Ni alloy nanocages for efficient oxygen reduction in practical fuel cells".SCIENCE 366.6467(2019):850-+. |
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