| Highly efficient oxygen reduction on porous nitrogen-doped nanocarbons directly synthesized from cellulose nanocrystals and urea | |
| Department | 先进润滑与防护材料研究发展中心 |
Liu Q(刘乔)1,2,3; Chen, Chongyi1; Pan FP(潘富平)2 ; Zhang JY(张俊彦)2; Zhang JY(张俊彦)
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| 2015 | |
| Source Publication | Electrochimica Acta
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| ISSN | 0013-4686 |
| Volume | 170Pages:234-241 |
| Abstract | 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. |
| Keyword | Cellulose Nanocrystals Nitrogen Doping Carbon Nanosheets Oxygen Reduction Fuel Cell |
| Subject Area | 材料科学与物理化学 |
| DOI | 10.1016/j.electacta.2015.04.094 |
| Funding Organization | the National Key Basic Research and Development (973) program of China (Grant No.2013CB632300);K. C. Wong Magna Fund in Ningbo University |
| Indexed By | SCI |
| If | 4.504 |
| Language | 英语 |
| Funding Project | 纳米润滑研究组 |
| compositor | 第二作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/18464 |
| Collection | 中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Chen, Chongyi; Zhang JY(张俊彦) |
| Affiliation | 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 |
| Recommended Citation 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,&张俊彦.(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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 2015234-241.pdf（2485KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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