Stepwise Fabrication of Co-Embedded Porous Multichannel Carbon Nanofibers for High-Efficiency Oxygen Reduction
Abstract A novel nonprecious metal material consisting of Co-embedded porous interconnected multichannel carbon nanofibers (Co/IMCCNFs) was rationally designed for oxygen reduction reaction (ORR) electrocatalysis. In the synthesis, ZnCo2O4 was employed to form interconnected mesoporous channels and...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2019-04-01
|
| Series: | Nano-Micro Letters |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/s40820-019-0264-2 |
| _version_ | 1828415514066550784 |
|---|---|
| author | Zeming Tang Yingxuan Zhao Qingxue Lai Jia Zhong Yanyu Liang |
| author_facet | Zeming Tang Yingxuan Zhao Qingxue Lai Jia Zhong Yanyu Liang |
| author_sort | Zeming Tang |
| collection | DOAJ |
| description | Abstract A novel nonprecious metal material consisting of Co-embedded porous interconnected multichannel carbon nanofibers (Co/IMCCNFs) was rationally designed for oxygen reduction reaction (ORR) electrocatalysis. In the synthesis, ZnCo2O4 was employed to form interconnected mesoporous channels and provide highly active Co3O4/Co core–shell nanoparticle-based sites for the ORR. The IMC structure with a large synergistic effect of the N and Co active sites provided fast ORR electrocatalysis kinetics. The Co/IMCCNFs exhibited a high half-wave potential of 0.82 V (vs. reversible hydrogen electrode) and excellent stability with a current retention up to 88% after 12,000 cycles in a current–time test, which is only 55% for 30 wt% Pt/C. |
| first_indexed | 2024-12-10T13:46:31Z |
| format | Article |
| id | doaj.art-b70730469b9a40cb862effae4b62c02c |
| institution | Directory Open Access Journal |
| issn | 2311-6706 2150-5551 |
| language | English |
| last_indexed | 2024-12-10T13:46:31Z |
| publishDate | 2019-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nano-Micro Letters |
| spelling | doaj.art-b70730469b9a40cb862effae4b62c02c2022-12-22T01:46:23ZengSpringerOpenNano-Micro Letters2311-67062150-55512019-04-0111111110.1007/s40820-019-0264-2Stepwise Fabrication of Co-Embedded Porous Multichannel Carbon Nanofibers for High-Efficiency Oxygen ReductionZeming Tang0Yingxuan Zhao1Qingxue Lai2Jia Zhong3Yanyu Liang4Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science and Technology, Nanjing University of Aeronautics and AstronauticsJiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science and Technology, Nanjing University of Aeronautics and AstronauticsJiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science and Technology, Nanjing University of Aeronautics and AstronauticsJiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science and Technology, Nanjing University of Aeronautics and AstronauticsJiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science and Technology, Nanjing University of Aeronautics and AstronauticsAbstract A novel nonprecious metal material consisting of Co-embedded porous interconnected multichannel carbon nanofibers (Co/IMCCNFs) was rationally designed for oxygen reduction reaction (ORR) electrocatalysis. In the synthesis, ZnCo2O4 was employed to form interconnected mesoporous channels and provide highly active Co3O4/Co core–shell nanoparticle-based sites for the ORR. The IMC structure with a large synergistic effect of the N and Co active sites provided fast ORR electrocatalysis kinetics. The Co/IMCCNFs exhibited a high half-wave potential of 0.82 V (vs. reversible hydrogen electrode) and excellent stability with a current retention up to 88% after 12,000 cycles in a current–time test, which is only 55% for 30 wt% Pt/C.http://link.springer.com/article/10.1007/s40820-019-0264-2Nonprecious metal materialMultichannel carbon nanofiberOxygen reduction reactionCore–shell nanoparticleSynergistic effect |
| spellingShingle | Zeming Tang Yingxuan Zhao Qingxue Lai Jia Zhong Yanyu Liang Stepwise Fabrication of Co-Embedded Porous Multichannel Carbon Nanofibers for High-Efficiency Oxygen Reduction Nano-Micro Letters Nonprecious metal material Multichannel carbon nanofiber Oxygen reduction reaction Core–shell nanoparticle Synergistic effect |
| title | Stepwise Fabrication of Co-Embedded Porous Multichannel Carbon Nanofibers for High-Efficiency Oxygen Reduction |
| title_full | Stepwise Fabrication of Co-Embedded Porous Multichannel Carbon Nanofibers for High-Efficiency Oxygen Reduction |
| title_fullStr | Stepwise Fabrication of Co-Embedded Porous Multichannel Carbon Nanofibers for High-Efficiency Oxygen Reduction |
| title_full_unstemmed | Stepwise Fabrication of Co-Embedded Porous Multichannel Carbon Nanofibers for High-Efficiency Oxygen Reduction |
| title_short | Stepwise Fabrication of Co-Embedded Porous Multichannel Carbon Nanofibers for High-Efficiency Oxygen Reduction |
| title_sort | stepwise fabrication of co embedded porous multichannel carbon nanofibers for high efficiency oxygen reduction |
| topic | Nonprecious metal material Multichannel carbon nanofiber Oxygen reduction reaction Core–shell nanoparticle Synergistic effect |
| url | http://link.springer.com/article/10.1007/s40820-019-0264-2 |
| work_keys_str_mv | AT zemingtang stepwisefabricationofcoembeddedporousmultichannelcarbonnanofibersforhighefficiencyoxygenreduction AT yingxuanzhao stepwisefabricationofcoembeddedporousmultichannelcarbonnanofibersforhighefficiencyoxygenreduction AT qingxuelai stepwisefabricationofcoembeddedporousmultichannelcarbonnanofibersforhighefficiencyoxygenreduction AT jiazhong stepwisefabricationofcoembeddedporousmultichannelcarbonnanofibersforhighefficiencyoxygenreduction AT yanyuliang stepwisefabricationofcoembeddedporousmultichannelcarbonnanofibersforhighefficiencyoxygenreduction |