Iron Carbide Nanoparticles Embedded in Edge-Rich, N and F Codoped Graphene/Carbon Nanotubes Hybrid for Oxygen Electrocatalysis
Rational design of cost-effective and efficient bifunctional oxygen electrocatalysts for sluggish oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is urgently desired for rechargeable metal–air batteries and regenerative fuel cells. Here, the Fe<sub>3</sub>C nanopartic...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-09-01
|
| Series: | Catalysts |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4344/12/9/1023 |
| _version_ | 1797490208360366080 |
|---|---|
| author | Xiaochang Qiao Yijie Deng Xiaochang Cao Jiafeng Wu Hui Guo Wenhuang Xiao Shijun Liao |
| author_facet | Xiaochang Qiao Yijie Deng Xiaochang Cao Jiafeng Wu Hui Guo Wenhuang Xiao Shijun Liao |
| author_sort | Xiaochang Qiao |
| collection | DOAJ |
| description | Rational design of cost-effective and efficient bifunctional oxygen electrocatalysts for sluggish oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is urgently desired for rechargeable metal–air batteries and regenerative fuel cells. Here, the Fe<sub>3</sub>C nanoparticles encapsulated in N and F codoped and simultaneously etched graphene/CNTs architecture catalyst (Fe<sub>3</sub>C@N-F-GCNTs) was synthesized by a simple yet cost-effective strategy. The as-prepared Fe<sub>3</sub>C@N-F-GCNTs exhibited excellent ORR and OER performances, with the ORR half-wave potential positive than that of Pt/C by 14 mV, and the OER overpotential lowered to 432 mV at the current density of 10 mA·cm<sup>−2</sup>. In addition, the ΔE value (oxygen electrode activity parameter) increased to 0.827 V, which is comparable to the performance of the best nonprecious metal catalysts reported to date. When it was applied in a Zn–air battery as a cathode, it achieved a peak power density of 130 mW·cm<sup>−2</sup>, exhibiting the potential for large-scale applications. |
| first_indexed | 2024-03-10T00:27:47Z |
| format | Article |
| id | doaj.art-849d9ee25c344c1790b0aaa401e93306 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T00:27:47Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-849d9ee25c344c1790b0aaa401e933062023-11-23T15:31:06ZengMDPI AGCatalysts2073-43442022-09-01129102310.3390/catal12091023Iron Carbide Nanoparticles Embedded in Edge-Rich, N and F Codoped Graphene/Carbon Nanotubes Hybrid for Oxygen ElectrocatalysisXiaochang Qiao0Yijie Deng1Xiaochang Cao2Jiafeng Wu3Hui Guo4Wenhuang Xiao5Shijun Liao6School of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, ChinaSchool of Resource Environmental and Safety Engineering, University of South China, Hengyang 421001, ChinaSchool of Mechanical Engineering, Dongguan University of Technology, Dongguan 523808, ChinaSchool of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, ChinaSchool of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, ChinaSchool of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, ChinaThe Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, ChinaRational design of cost-effective and efficient bifunctional oxygen electrocatalysts for sluggish oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is urgently desired for rechargeable metal–air batteries and regenerative fuel cells. Here, the Fe<sub>3</sub>C nanoparticles encapsulated in N and F codoped and simultaneously etched graphene/CNTs architecture catalyst (Fe<sub>3</sub>C@N-F-GCNTs) was synthesized by a simple yet cost-effective strategy. The as-prepared Fe<sub>3</sub>C@N-F-GCNTs exhibited excellent ORR and OER performances, with the ORR half-wave potential positive than that of Pt/C by 14 mV, and the OER overpotential lowered to 432 mV at the current density of 10 mA·cm<sup>−2</sup>. In addition, the ΔE value (oxygen electrode activity parameter) increased to 0.827 V, which is comparable to the performance of the best nonprecious metal catalysts reported to date. When it was applied in a Zn–air battery as a cathode, it achieved a peak power density of 130 mW·cm<sup>−2</sup>, exhibiting the potential for large-scale applications.https://www.mdpi.com/2073-4344/12/9/1023oxygen electrocatalystgraphene/carbon nanotubeFe<sub>3</sub>C@CN and F codopededge defects |
| spellingShingle | Xiaochang Qiao Yijie Deng Xiaochang Cao Jiafeng Wu Hui Guo Wenhuang Xiao Shijun Liao Iron Carbide Nanoparticles Embedded in Edge-Rich, N and F Codoped Graphene/Carbon Nanotubes Hybrid for Oxygen Electrocatalysis Catalysts oxygen electrocatalyst graphene/carbon nanotube Fe<sub>3</sub>C@C N and F codoped edge defects |
| title | Iron Carbide Nanoparticles Embedded in Edge-Rich, N and F Codoped Graphene/Carbon Nanotubes Hybrid for Oxygen Electrocatalysis |
| title_full | Iron Carbide Nanoparticles Embedded in Edge-Rich, N and F Codoped Graphene/Carbon Nanotubes Hybrid for Oxygen Electrocatalysis |
| title_fullStr | Iron Carbide Nanoparticles Embedded in Edge-Rich, N and F Codoped Graphene/Carbon Nanotubes Hybrid for Oxygen Electrocatalysis |
| title_full_unstemmed | Iron Carbide Nanoparticles Embedded in Edge-Rich, N and F Codoped Graphene/Carbon Nanotubes Hybrid for Oxygen Electrocatalysis |
| title_short | Iron Carbide Nanoparticles Embedded in Edge-Rich, N and F Codoped Graphene/Carbon Nanotubes Hybrid for Oxygen Electrocatalysis |
| title_sort | iron carbide nanoparticles embedded in edge rich n and f codoped graphene carbon nanotubes hybrid for oxygen electrocatalysis |
| topic | oxygen electrocatalyst graphene/carbon nanotube Fe<sub>3</sub>C@C N and F codoped edge defects |
| url | https://www.mdpi.com/2073-4344/12/9/1023 |
| work_keys_str_mv | AT xiaochangqiao ironcarbidenanoparticlesembeddedinedgerichnandfcodopedgraphenecarbonnanotubeshybridforoxygenelectrocatalysis AT yijiedeng ironcarbidenanoparticlesembeddedinedgerichnandfcodopedgraphenecarbonnanotubeshybridforoxygenelectrocatalysis AT xiaochangcao ironcarbidenanoparticlesembeddedinedgerichnandfcodopedgraphenecarbonnanotubeshybridforoxygenelectrocatalysis AT jiafengwu ironcarbidenanoparticlesembeddedinedgerichnandfcodopedgraphenecarbonnanotubeshybridforoxygenelectrocatalysis AT huiguo ironcarbidenanoparticlesembeddedinedgerichnandfcodopedgraphenecarbonnanotubeshybridforoxygenelectrocatalysis AT wenhuangxiao ironcarbidenanoparticlesembeddedinedgerichnandfcodopedgraphenecarbonnanotubeshybridforoxygenelectrocatalysis AT shijunliao ironcarbidenanoparticlesembeddedinedgerichnandfcodopedgraphenecarbonnanotubeshybridforoxygenelectrocatalysis |