Loading...
Please wait, while we are loading the content...
Similar Documents
Manganous oxide nanoparticles encapsulated in few-layer carbon as an efficient electrocatalyst for oxygen reduction in alkaline media
| Content Provider | Semantic Scholar |
|---|---|
| Author | Cheng, Han Xing, Lili Gong, Yue Zhang, Lidong Wu, Changzheng |
| Copyright Year | 2016 |
| Abstract | To replace Pt-based catalysts for the oxygen reduction reaction (ORR) in energy conversion and storage systems, it is highly desirable to explore low-cost and high-performance nonprecious metal catalysts. Herein, we report a novel Mn-based catalytic system for the ORR which consists of MnO nanoparticles encapsulated in mesoporous few-layer carbon (MnO@FLC). Using density functional theory (DFT), we disclose that the few-layer carbon could be activated by the encapsulated MnO nanoparticles and further become active sites for the ORR process. The MnO@FLC electrocatalyst exhibits outstanding ORR activity (an onset potential of −0.005 V vs. Ag/AgCl, a half-wave potential of −0.153 V and a limiting current density of −5.38 mA cm−2), which are among the best performances reported to date for Mn-based ORR electrocatalysts and highly comparable to those of state-of-the-art Pt/C catalysts in alkaline media. Our work suggests that metal oxides encapsulated in few-layer carbon could serve as efficient ORR electrocatalysts with decent performance. |
| Starting Page | 11775 |
| Ending Page | 11781 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C6TA02846B |
| Volume Number | 4 |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c6/ta/c6ta02846b/c6ta02846b1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/C6TA02846B |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
