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N-doped carbon nanotubes containing a high concentration of single iron atoms for efficient oxygen reduction
Li, JC; Yang, ZQ; Tang, DM; Zhang, L; Hou, PX; Zhao, SY; Liu, C; Cheng, M; Li, GX; Zhang, F; Cheng, HM; Liu, C (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
2018-01-12
发表期刊NPG ASIA MATERIALS
ISSN1884-4049
卷号10页码:-
摘要Fe-N-C has emerged as a promising noble-metal-free catalyst for the oxygen reduction reaction (ORR). However, achieving a catalytic activity comparable to that of Pt in acidic medium remains a great challenge. Here we report a N-doped carbon nanotube (CNT) catalyst in which a high concentration of single Fe atoms has been dispersed (CNT@Fe-N-PC). The catalyst was prepared by a simple and scalable atomic isolation method, in which a metal isolation agent was introduced to isolate Fe atoms and was then evaporated to produce abundant micropores that host single Fe atom active sites. The CNT@Fe-N-PC catalyst contained a high concentration of single Fe atom active sites and exhibited ultrahigh ORR activity with a half-wave potential of 0.82 V, comparable to that of Pt/C in an acidic medium. A high concentration of Fe-N-x active sites was created on a flexible single-wall CNT film and carbon cloth using this technique, and these materials showed even better ORR performance, that is, 40-60 mV more positive onset potentials than those of a commercial Pt/C catalyst. These catalysts exhibit excellent catalytic activity, good durability and low cost, and show great potential for commercial use as substitutes for current Pt-based catalysts.; Fe-N-C has emerged as a promising noble-metal-free catalyst for the oxygen reduction reaction (ORR). However, achieving a catalytic activity comparable to that of Pt in acidic medium remains a great challenge. Here we report a N-doped carbon nanotube (CNT) catalyst in which a high concentration of single Fe atoms has been dispersed (CNT@Fe-N-PC). The catalyst was prepared by a simple and scalable atomic isolation method, in which a metal isolation agent was introduced to isolate Fe atoms and was then evaporated to produce abundant micropores that host single Fe atom active sites. The CNT@Fe-N-PC catalyst contained a high concentration of single Fe atom active sites and exhibited ultrahigh ORR activity with a half-wave potential of 0.82 V, comparable to that of Pt/C in an acidic medium. A high concentration of Fe-N-x active sites was created on a flexible single-wall CNT film and carbon cloth using this technique, and these materials showed even better ORR performance, that is, 40-60 mV more positive onset potentials than those of a commercial Pt/C catalyst. These catalysts exhibit excellent catalytic activity, good durability and low cost, and show great potential for commercial use as substitutes for current Pt-based catalysts.
部门归属[li, jin-cheng ; yang, zhi-qing ; tang, dai-ming ; zhang, lili ; hou, peng-xiang ; zhao, shi-yong ; liu, chang ; cheng, min ; li, guo-xian ; zhang, feng ; cheng, hui-ming] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang, liaoning, peoples r china ; [tang, dai-ming] natl inst mat sci, world premier int ctr mat nanoarchitecton, ibaraki, japan ; [cheng, hui-ming] tsinghua univ, tbsi, shenzhen, peoples r china ; [cheng, hui-ming] king abdulaziz univ, dept chem, fac sci, jeddah, saudi arabia
关键词Membrane Fuel-cells Porous Carbon Catalysts Electrocatalysts Frameworks Coordination Electrodes Complexes Hybrids Network
学科领域Materials Science, Multidisciplinary
资助者Ministry of Science and Technology of China [2016YFA0200102]; National Natural Science Foundation of China [51625203, 51532008, 51521091, 51572264]; Chinese Academy of Sciences [KGZD-EW-T06]; CAS/SAFEA International Partnership Program for Creative Research Teams; Liaoning BaiQian Wan Talents Program
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/79583
专题中国科学院金属研究所
通讯作者Hou, PX; Liu, C (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式
GB/T 7714
Li, JC,Yang, ZQ,Tang, DM,et al. N-doped carbon nanotubes containing a high concentration of single iron atoms for efficient oxygen reduction[J]. NPG ASIA MATERIALS,2018,10:-.
APA Li, JC.,Yang, ZQ.,Tang, DM.,Zhang, L.,Hou, PX.,...&Liu, C .(2018).N-doped carbon nanotubes containing a high concentration of single iron atoms for efficient oxygen reduction.NPG ASIA MATERIALS,10,-.
MLA Li, JC,et al."N-doped carbon nanotubes containing a high concentration of single iron atoms for efficient oxygen reduction".NPG ASIA MATERIALS 10(2018):-.
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