Scalable solid-phase synthesis of defect-rich graphene for oxygen reduction electrocatalysis
Defect-engineered carbon materials have been emerged as promising electrocatalysts for oxygen reduction reaction (ORR) in metal-air batteries. Developing a facile strategy for the preparation of highly active nanocarbon electrocatalysts remains challenging. Herein, a low-cost and simple route is dev...
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| Format: | Article |
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KeAi Communications Co., Ltd.
2023-02-01
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| Series: | Green Energy & Environment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468025721000601 |
| _version_ | 1797945529045352448 |
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| author | Chunxiao Dong Li Yang Cheng Lian Xiaoling Yang Yihua Zhu Hongliang Jiang Chunzhong Li |
| author_facet | Chunxiao Dong Li Yang Cheng Lian Xiaoling Yang Yihua Zhu Hongliang Jiang Chunzhong Li |
| author_sort | Chunxiao Dong |
| collection | DOAJ |
| description | Defect-engineered carbon materials have been emerged as promising electrocatalysts for oxygen reduction reaction (ORR) in metal-air batteries. Developing a facile strategy for the preparation of highly active nanocarbon electrocatalysts remains challenging. Herein, a low-cost and simple route is developed to synthesize defective graphene by pyrolyzing the mixture of glucose and carbon nitride. Molecular dynamics simulations reveal that the graphene formation is ascribed to two-dimensional layered feature of carbon nitride, and high compatibility of carbon nitride/glucose systems. Structural measurements suggest that the graphene possesses rich edge and topological defects. The graphene catalyst exhibits higher power density than commercial Pt/C catalyst in a primary Zn-air battery. Combining experimental results and theoretical thermodynamic analysis, it is identified that graphitic nitrogen-modified topological defects at carbon framework edges are responsible for the decent ORR performance. The strategy presented in this work can be can be scaled up readily to fabricate defective carbon materials. |
| first_indexed | 2024-04-10T20:56:33Z |
| format | Article |
| id | doaj.art-47ca26571c1b45bb8f085050e4db059b |
| institution | Directory Open Access Journal |
| issn | 2468-0257 |
| language | English |
| last_indexed | 2024-04-10T20:56:33Z |
| publishDate | 2023-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Green Energy & Environment |
| spelling | doaj.art-47ca26571c1b45bb8f085050e4db059b2023-01-23T04:08:54ZengKeAi Communications Co., Ltd.Green Energy & Environment2468-02572023-02-0181224232Scalable solid-phase synthesis of defect-rich graphene for oxygen reduction electrocatalysisChunxiao Dong0Li Yang1Cheng Lian2Xiaoling Yang3Yihua Zhu4Hongliang Jiang5Chunzhong Li6Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China; Key Laboratory for Ultrafine Materials of Ministry of Education, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, ChinaInstitutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui, 230601, ChinaSchool of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, ChinaShanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, ChinaShanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, ChinaKey Laboratory for Ultrafine Materials of Ministry of Education, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China; Corresponding authors.Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China; Key Laboratory for Ultrafine Materials of Ministry of Education, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China; Corresponding authors.Defect-engineered carbon materials have been emerged as promising electrocatalysts for oxygen reduction reaction (ORR) in metal-air batteries. Developing a facile strategy for the preparation of highly active nanocarbon electrocatalysts remains challenging. Herein, a low-cost and simple route is developed to synthesize defective graphene by pyrolyzing the mixture of glucose and carbon nitride. Molecular dynamics simulations reveal that the graphene formation is ascribed to two-dimensional layered feature of carbon nitride, and high compatibility of carbon nitride/glucose systems. Structural measurements suggest that the graphene possesses rich edge and topological defects. The graphene catalyst exhibits higher power density than commercial Pt/C catalyst in a primary Zn-air battery. Combining experimental results and theoretical thermodynamic analysis, it is identified that graphitic nitrogen-modified topological defects at carbon framework edges are responsible for the decent ORR performance. The strategy presented in this work can be can be scaled up readily to fabricate defective carbon materials.http://www.sciencedirect.com/science/article/pii/S2468025721000601Carbon materialsElectrocatalysisOxygen reduction reactionSolid-phase synthesisZn-air battery |
| spellingShingle | Chunxiao Dong Li Yang Cheng Lian Xiaoling Yang Yihua Zhu Hongliang Jiang Chunzhong Li Scalable solid-phase synthesis of defect-rich graphene for oxygen reduction electrocatalysis Green Energy & Environment Carbon materials Electrocatalysis Oxygen reduction reaction Solid-phase synthesis Zn-air battery |
| title | Scalable solid-phase synthesis of defect-rich graphene for oxygen reduction electrocatalysis |
| title_full | Scalable solid-phase synthesis of defect-rich graphene for oxygen reduction electrocatalysis |
| title_fullStr | Scalable solid-phase synthesis of defect-rich graphene for oxygen reduction electrocatalysis |
| title_full_unstemmed | Scalable solid-phase synthesis of defect-rich graphene for oxygen reduction electrocatalysis |
| title_short | Scalable solid-phase synthesis of defect-rich graphene for oxygen reduction electrocatalysis |
| title_sort | scalable solid phase synthesis of defect rich graphene for oxygen reduction electrocatalysis |
| topic | Carbon materials Electrocatalysis Oxygen reduction reaction Solid-phase synthesis Zn-air battery |
| url | http://www.sciencedirect.com/science/article/pii/S2468025721000601 |
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