Alveolate porous carbon aerogels supported Co9S8 derived from a novel hybrid hydrogel for bifunctional oxygen electrocatalysis
Incorporation of transition-metal dopants into carbon aerogels is a powerful way to develop highly-active and robust bifunctional oxygen electrocatalysts. Herein, we develop a novel hybrid hydrogel method for the preparation of Co9S8-doped alveolate carbon aerogels. The hydrogel formation depends on...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/151076 |
| _version_ | 1826121838417149952 |
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| author | Hu, Xuejiao Chen, Yifan Zhang, Mengru Fu, Gengtao Sun, Dongmei Lee, Jong-Min Tang, Yawen |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Hu, Xuejiao Chen, Yifan Zhang, Mengru Fu, Gengtao Sun, Dongmei Lee, Jong-Min Tang, Yawen |
| author_sort | Hu, Xuejiao |
| collection | NTU |
| description | Incorporation of transition-metal dopants into carbon aerogels is a powerful way to develop highly-active and robust bifunctional oxygen electrocatalysts. Herein, we develop a novel hybrid hydrogel method for the preparation of Co9S8-doped alveolate carbon aerogels. The hydrogel formation depends on a simple sol−gel polymerization of chitosan, sodium tripolyphosphate and polyhexamethyleneguanidine phosphate. The repeating units of polymer contain a binding site (single bondNH2) for Co2+ ions, after pyrolysis which ensures a uniform anchor of Co9S8 particles within the carbon aerogels. The newly developed catalyst exhibits excellent bifunctional activity and robust stability for both the oxygen reduction reaction and oxygen evolution reaction, resulting from the significant synergy between Co9S8 and 3D porous N, P-codoped carbon aerogels. Moreover, we also demonstrate that Co9S8 material is more active to OER than to ORR through the density functional theory (DFT) theoretical computation. |
| first_indexed | 2024-10-01T05:38:44Z |
| format | Journal Article |
| id | ntu-10356/151076 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:38:44Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1510762021-06-03T00:56:14Z Alveolate porous carbon aerogels supported Co9S8 derived from a novel hybrid hydrogel for bifunctional oxygen electrocatalysis Hu, Xuejiao Chen, Yifan Zhang, Mengru Fu, Gengtao Sun, Dongmei Lee, Jong-Min Tang, Yawen School of Chemical and Biomedical Engineering Maritime Institute Engineering::Chemical engineering Nitrogen-doped Graphene Efficient Electrocatalyst Incorporation of transition-metal dopants into carbon aerogels is a powerful way to develop highly-active and robust bifunctional oxygen electrocatalysts. Herein, we develop a novel hybrid hydrogel method for the preparation of Co9S8-doped alveolate carbon aerogels. The hydrogel formation depends on a simple sol−gel polymerization of chitosan, sodium tripolyphosphate and polyhexamethyleneguanidine phosphate. The repeating units of polymer contain a binding site (single bondNH2) for Co2+ ions, after pyrolysis which ensures a uniform anchor of Co9S8 particles within the carbon aerogels. The newly developed catalyst exhibits excellent bifunctional activity and robust stability for both the oxygen reduction reaction and oxygen evolution reaction, resulting from the significant synergy between Co9S8 and 3D porous N, P-codoped carbon aerogels. Moreover, we also demonstrate that Co9S8 material is more active to OER than to ORR through the density functional theory (DFT) theoretical computation. This work was financially supported by National Natural Science Foundation of China (NSFC Nos. 21875112and 21576139), National and Local Joint Engineering Research Center of Biomedical Functional Materials and Priority Academic Program Development of Jiangsu Higher Education Institutions. Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX18_1192). Y.F. Chen thanks China Scholarship Council (Grant No. 201806860028) for the award of a fellowship. 2021-06-03T00:56:14Z 2021-06-03T00:56:14Z 2018 Journal Article Hu, X., Chen, Y., Zhang, M., Fu, G., Sun, D., Lee, J. & Tang, Y. (2018). Alveolate porous carbon aerogels supported Co9S8 derived from a novel hybrid hydrogel for bifunctional oxygen electrocatalysis. Carbon, 144, 557-566. https://dx.doi.org/10.1016/j.carbon.2018.12.099 0008-6223 https://hdl.handle.net/10356/151076 10.1016/j.carbon.2018.12.099 2-s2.0-85060048599 144 557 566 en Carbon © 2018 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Chemical engineering Nitrogen-doped Graphene Efficient Electrocatalyst Hu, Xuejiao Chen, Yifan Zhang, Mengru Fu, Gengtao Sun, Dongmei Lee, Jong-Min Tang, Yawen Alveolate porous carbon aerogels supported Co9S8 derived from a novel hybrid hydrogel for bifunctional oxygen electrocatalysis |
| title | Alveolate porous carbon aerogels supported Co9S8 derived from a novel hybrid hydrogel for bifunctional oxygen electrocatalysis |
| title_full | Alveolate porous carbon aerogels supported Co9S8 derived from a novel hybrid hydrogel for bifunctional oxygen electrocatalysis |
| title_fullStr | Alveolate porous carbon aerogels supported Co9S8 derived from a novel hybrid hydrogel for bifunctional oxygen electrocatalysis |
| title_full_unstemmed | Alveolate porous carbon aerogels supported Co9S8 derived from a novel hybrid hydrogel for bifunctional oxygen electrocatalysis |
| title_short | Alveolate porous carbon aerogels supported Co9S8 derived from a novel hybrid hydrogel for bifunctional oxygen electrocatalysis |
| title_sort | alveolate porous carbon aerogels supported co9s8 derived from a novel hybrid hydrogel for bifunctional oxygen electrocatalysis |
| topic | Engineering::Chemical engineering Nitrogen-doped Graphene Efficient Electrocatalyst |
| url | https://hdl.handle.net/10356/151076 |
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