Porous carbon electrocatalyst with exclusive metal-coordinate active sites for acidic oxygen reduction reaction
文献类型：期刊论文
| 作者 | Zhang, Q; Wang, JH; Yu, PW; Song, F; Yin, X; Chen, RJ; Nie, HL; Zhang, X; Yang, WL |
| 刊名 | CARBON
 |
| 出版日期 | 2018 |
| 卷号 | 132页码:85-94 |
| 关键词 | X-ray-absorption Nitrogen-doped Carbon Electrolyte Fuel-cells Electrochemical Performance Fine-structure Catalysts Iron Fe Orr Spectroscopy |
| ISSN号 | 0008-6223 |
| DOI | 10.1016/j.carbon.2018.02.019 |
| 文献子类 | 期刊论文 |
| 英文摘要 | A porous P-doped M/N/C electrocatalyst with high-surface-area (up to 1312 m(2) g(-1)) was prepared by annealing a mixture of triphenylphosphine, polyaniline, phthalocyanine iron (II), and phthalocyanine cobalt (II). The synthesis involves hard templating with silica nanoparticles, followed by NH3 activation. Along with low metal loading (Fe loading = 0.46 wt. %; Co loading = 0.26 wt. %), the resulting P-doped M/N/C exhibits an excellent ORR activity and durability in acidic media. The half-wave potential difference of the catalyst for ORR is only similar to 53 mV negative relative to the benchmarked Pt/C (360 mu g Pt) at the same loading. More importantly, transmission electron microscopy, X-ray absorption fine structure spectra, and electrochemical poisoning by SCN- ion suggested that exclusive metal-coordinate catalytic active sites such as Fe-N-6 and Co-N-4, are involved in ORR. Moreover, as-prepared P-doped M/N/C catalysts with bimetallic catalytic active sites exhibit superior electrochemical performance compared to catalysts with single metal active sites. These results represent an important step towards rational design of high-performance ORR electrocatalysts for polymer exchange membrane fuel cells. (C) 2018 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000428233000011 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/29104]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Zhang, Q 2.Wang, JH 3.Yu, PW 4.Song, F 5.Yin, X 6.Chen, RJ 7.Nie, HL 8.Zhang, X 9.Yang, WL |
| 推荐引用方式 GB/T 7714 | Zhang, Q,Wang, JH,Yu, PW,et al. Porous carbon electrocatalyst with exclusive metal-coordinate active sites for acidic oxygen reduction reaction[J]. CARBON,2018,132:85-94. |
| APA | Zhang, Q.,Wang, JH.,Yu, PW.,Song, F.,Yin, X.,...&Yang, WL.(2018).Porous carbon electrocatalyst with exclusive metal-coordinate active sites for acidic oxygen reduction reaction.CARBON,132,85-94. |
| MLA | Zhang, Q,et al."Porous carbon electrocatalyst with exclusive metal-coordinate active sites for acidic oxygen reduction reaction".CARBON 132(2018):85-94. |
入库方式： OAI收割
来源：上海应用物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。