Highly efficient oxygen reduction on porous nitrogen-doped nanocarbons directly synthesized from cellulose nanocrystals and urea
文献类型：期刊论文
| 作者 | Liu Q(刘乔)1,2,3; Chen, Chongyi1; Pan FP(潘富平)2 ; Zhang JY(张俊彦)2
|
| 刊名 | Electrochimica Acta
 |
| 出版日期 | 2015 |
| 卷号 | 170页码:234-241 |
| ISSN号 | 0013-4686 |
| 关键词 | Cellulose nanocrystals Nitrogen doping Carbon nanosheets Oxygen reduction Fuel cell |
| 通讯作者 | Chen, Chongyi ; 张俊彦 |
| 英文摘要 | This study displays an easy preparation of high-performance electrocatalyst from cellulose nanocrystals for oxygen reduction reaction (ORR) that occurs at cathode of fuel cells. Through a direct pyrolysis of cellulose nanocrystals and urea, porous nitrogen-doped carbon nanosheets (NCN) are successfully synthesized without involving any catalysts or post treatments. As-prepared NCN displays very high specific surface area (∼1362.36 m2 g−1), large pore volume (∼3.36 cm3 g−1) and high graphitic-/pyridinic-N proportion (∼80% in total N content). This metal-free material demonstrates a superior catalytic performance in terms of a comparable electrocatalytic activity, a better tolerance to the methanol crossover effect and an improved long-term durability toward ORR in the alkaline media when compared with the commercial Pt/C catalyst. Interestingly, the addition of FeCl3 catalyst to the reaction system does not benefit ORR activity of the resultant material; the replacement of urea by NH3 gas brings about much poorer material features of morphology, structure and catalytic activity. It is suggested that urea is irreplaceable during this catalyst-free synthesis of nitrogen-doped nanocarbons while cellulose nanocrystal is an unique choice for preparing high performance ORR electrocatalyst. The study herein contributes a very promising Pt-alternative cathode catalyst and also a facile and practical preparation of advanced carbon materials. |
| 学科主题 | 材料科学与物理化学 |
| 资助信息 | the National Key Basic Research and Development (973) program of China (Grant No.2013CB632300);K. C. Wong Magna Fund in Ningbo University |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000355636100028 |
| 公开日期 | 2015-12-24 |
| 源URL | [http://210.77.64.217/handle/362003/18464]  |
| 专题 | 兰州化学物理研究所_先进润滑与防护材料研究发展中心 兰州化学物理研究所_固体润滑国家重点实验室 |
| 作者单位 | 1.Ningbo Univ, Sch Mat Sci & Chem Engn, Ningbo 315211, Zhejiang, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lanzhou 730000, Peoples R China 3.Ningbo Univ, Inst Mat, Ningbo 315211, Zhejiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu Q,Chen, Chongyi,Pan FP,et al. Highly efficient oxygen reduction on porous nitrogen-doped nanocarbons directly synthesized from cellulose nanocrystals and urea[J]. Electrochimica Acta,2015,170:234-241. |
| APA | Liu Q,Chen, Chongyi,Pan FP,&Zhang JY.(2015).Highly efficient oxygen reduction on porous nitrogen-doped nanocarbons directly synthesized from cellulose nanocrystals and urea.Electrochimica Acta,170,234-241. |
| MLA | Liu Q,et al."Highly efficient oxygen reduction on porous nitrogen-doped nanocarbons directly synthesized from cellulose nanocrystals and urea".Electrochimica Acta 170(2015):234-241. |
入库方式： OAI收割
来源：兰州化学物理研究所
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