Cobalt Phosphate Nanoparticles Embedded Nitrogen and Phosphorus-Codoped Graphene Aerogels as Effective Electrocatalysts for Oxygen Reduction
Developing cost-efficient and high-performance non-noble metal electrocatalysts for oxygen reduction reaction is of great significance for large-scale commercialization of fuel cells. Here, a novel cobalt phosphate-embedded nitrogen and phosphorus co-doped graphene aerogel [labeled as Co3(PO4)2/N,P-...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2019-02-01
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| Series: | Frontiers in Materials |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fmats.2019.00022/full |
| _version_ | 1828858085324619776 |
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| author | Li-Li Xuan Xiao-Jun Liu Xue Wang |
| author_facet | Li-Li Xuan Xiao-Jun Liu Xue Wang |
| author_sort | Li-Li Xuan |
| collection | DOAJ |
| description | Developing cost-efficient and high-performance non-noble metal electrocatalysts for oxygen reduction reaction is of great significance for large-scale commercialization of fuel cells. Here, a novel cobalt phosphate-embedded nitrogen and phosphorus co-doped graphene aerogel [labeled as Co3(PO4)2/N,P-GA] is prepared via combination of a facile hydrothermal apporoach with a pyrolysis procedure. The obtained Co3(PO4)2/N,P-GA catalysts display excellent catalytic performance in base media, with optimal Co3(PO4)2/N,P-GA-900 (the material prepared at pyrolysis temperature of 900°C) showing better catalytic activity for ORR than other as-obtained contrast materials in terms of the onset potential, half-wave potential and diffusion-limiting current density, even superior to the commercial Pt/C catalyst. Furthermore, the Co3(PO4)2/N,P-GA also possesses good methanol tolerance and excellent durability. The superior performance of Co3(PO4)2/N,P-GA is attributed to the hierachical porous structure, large BET surface area, N,P-codoping, cobalt phosphate-based nanoparticles loaded on graphene nanosheets, and synergistic effects between the doped active species. Therefore, it is expected to replace Pt/C as a promising fuel cell catalyst in alkaline direct methanol fuel cells. |
| first_indexed | 2024-12-13T01:49:39Z |
| format | Article |
| id | doaj.art-376306e7cba947fd9976a36432fcf4c5 |
| institution | Directory Open Access Journal |
| issn | 2296-8016 |
| language | English |
| last_indexed | 2024-12-13T01:49:39Z |
| publishDate | 2019-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Materials |
| spelling | doaj.art-376306e7cba947fd9976a36432fcf4c52022-12-22T00:03:32ZengFrontiers Media S.A.Frontiers in Materials2296-80162019-02-01610.3389/fmats.2019.00022436670Cobalt Phosphate Nanoparticles Embedded Nitrogen and Phosphorus-Codoped Graphene Aerogels as Effective Electrocatalysts for Oxygen ReductionLi-Li XuanXiao-Jun LiuXue WangDeveloping cost-efficient and high-performance non-noble metal electrocatalysts for oxygen reduction reaction is of great significance for large-scale commercialization of fuel cells. Here, a novel cobalt phosphate-embedded nitrogen and phosphorus co-doped graphene aerogel [labeled as Co3(PO4)2/N,P-GA] is prepared via combination of a facile hydrothermal apporoach with a pyrolysis procedure. The obtained Co3(PO4)2/N,P-GA catalysts display excellent catalytic performance in base media, with optimal Co3(PO4)2/N,P-GA-900 (the material prepared at pyrolysis temperature of 900°C) showing better catalytic activity for ORR than other as-obtained contrast materials in terms of the onset potential, half-wave potential and diffusion-limiting current density, even superior to the commercial Pt/C catalyst. Furthermore, the Co3(PO4)2/N,P-GA also possesses good methanol tolerance and excellent durability. The superior performance of Co3(PO4)2/N,P-GA is attributed to the hierachical porous structure, large BET surface area, N,P-codoping, cobalt phosphate-based nanoparticles loaded on graphene nanosheets, and synergistic effects between the doped active species. Therefore, it is expected to replace Pt/C as a promising fuel cell catalyst in alkaline direct methanol fuel cells.https://www.frontiersin.org/article/10.3389/fmats.2019.00022/fullcobalt phosphategraphene aerogelelectrocatalystN,P-codopedoxygen reduction reaction |
| spellingShingle | Li-Li Xuan Xiao-Jun Liu Xue Wang Cobalt Phosphate Nanoparticles Embedded Nitrogen and Phosphorus-Codoped Graphene Aerogels as Effective Electrocatalysts for Oxygen Reduction Frontiers in Materials cobalt phosphate graphene aerogel electrocatalyst N,P-codoped oxygen reduction reaction |
| title | Cobalt Phosphate Nanoparticles Embedded Nitrogen and Phosphorus-Codoped Graphene Aerogels as Effective Electrocatalysts for Oxygen Reduction |
| title_full | Cobalt Phosphate Nanoparticles Embedded Nitrogen and Phosphorus-Codoped Graphene Aerogels as Effective Electrocatalysts for Oxygen Reduction |
| title_fullStr | Cobalt Phosphate Nanoparticles Embedded Nitrogen and Phosphorus-Codoped Graphene Aerogels as Effective Electrocatalysts for Oxygen Reduction |
| title_full_unstemmed | Cobalt Phosphate Nanoparticles Embedded Nitrogen and Phosphorus-Codoped Graphene Aerogels as Effective Electrocatalysts for Oxygen Reduction |
| title_short | Cobalt Phosphate Nanoparticles Embedded Nitrogen and Phosphorus-Codoped Graphene Aerogels as Effective Electrocatalysts for Oxygen Reduction |
| title_sort | cobalt phosphate nanoparticles embedded nitrogen and phosphorus codoped graphene aerogels as effective electrocatalysts for oxygen reduction |
| topic | cobalt phosphate graphene aerogel electrocatalyst N,P-codoped oxygen reduction reaction |
| url | https://www.frontiersin.org/article/10.3389/fmats.2019.00022/full |
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