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Synergistic effects of N-doping and mesoporous structures in block copolymer-derived three-dimensionally ordered mesoporous carbon for PEMFC

文献类型：期刊论文

作者Yang, Yi1,2; Zhao, Chenglin1,3; Wang, Zhida1; Fan, Xiaokai1,3; Yan, Changfeng1,2,3
刊名INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
出版日期2024-01-02
卷号51页码:747-757
关键词Block copolymer N -doped 3D-ordered mesoporous carbon Ammonia-assisted pyrolysis Synergistic effect Oxygen reduction reaction
ISSN号0360-3199
DOI10.1016/j.ijhydene.2023.10.197
通讯作者Wang, Zhida(wangzd@ms.giec.ac.cn) ; Yan, Changfeng(yancf@ms.giec.ac.cn)
英文摘要Block copolymer (BCP) is a promising precursor to design ordered mesoporous carbon (OMC) materials for proton exchange membrane fuel cells due to its accessibility and controllability. However, enhancing the per-formance of OMCs through the integration of heteroatoms during the self-assembly process remains a chal-lenging endeavor. Herein, an ammonia-assisted pyrolysis method is used to deposit N atoms in self-assembled OMC (N-OMC). The resulting N-OMC exhibits a well-ordered mesoporous structure with the N content up to 6.43 at.%. Upon PtCo nanoparticles loading (PtCo/N-OMC), the PtCo/N-OMC demonstrates exceptional elec-trocatalytic activity, evidenced by a half-wave potential of 0.876 VRHE and an electrochemical surface area of 98.19 m2 center dot g- 1. The single-cell test confirms the superiority of the N-OMC structure, revealing a current density of 1.53 A center dot cm- 2 at 0.6 V and a peak power density of 1.17 W center dot cm- 2. Theoretical calculations affirm that the pyridinic N-doping reduces oxygen binding energy, thereby enhancing oxygen reduction reaction activity. The confine-ment effect of the mesopores avoids aggregation of nanoparticles, while doping-N-induced defects further bolster their electrochemical activities. This work highlights the synergistic effect of N-doping defects and ordered mesoporous architectures, illustrating the exceptional potential of the BCP-derived OMC as an ideal support for electrocatalysis applications.
WOS关键词OXYGEN REDUCTION REACTION ; DOPED GRAPHENE ; POROUS CARBON ; ACTIVE-SITES ; CATALYSTS ; EVOLUTION ; ELECTROCATALYSTS ; MECHANISM ; INSIGHT ; POLYMER
资助项目National Natural Science Foundation of China[52276222] ; International Partnership Program of Chinese Academy of Sciences[118GJHZ2022029MI] ; STS Regional Key Project of Chinese Academy of Sciences[KFJ-STS-QYZD- 2021-02-003] ; Guangzhou Key Area R & D Program of Science and Technology Plan Project[202103040002] ; Guangzhou Key Area R & D Program of Science and Technology Plan Project[202206050003] ; Wuhu Key Technologies R D Program[2022hg01]
WOS研究方向Chemistry ; Electrochemistry ; Energy & Fuels
语种英语
WOS记录号WOS:001138153600001
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Natural Science Foundation of China ; International Partnership Program of Chinese Academy of Sciences ; STS Regional Key Project of Chinese Academy of Sciences ; Guangzhou Key Area R & D Program of Science and Technology Plan Project ; Wuhu Key Technologies R D Program
源URL[http://ir.giec.ac.cn/handle/344007/40608]  
专题中国科学院广州能源研究所
通讯作者Wang, Zhida; Yan, Changfeng
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy,Hydrogen Prod & Utili, Guangdong Key Lab New & Renewable Energy Res & Dev, Guangzhou 510640, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Yi,Zhao, Chenglin,Wang, Zhida,et al. Synergistic effects of N-doping and mesoporous structures in block copolymer-derived three-dimensionally ordered mesoporous carbon for PEMFC[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2024,51:747-757.
APA Yang, Yi,Zhao, Chenglin,Wang, Zhida,Fan, Xiaokai,&Yan, Changfeng.(2024).Synergistic effects of N-doping and mesoporous structures in block copolymer-derived three-dimensionally ordered mesoporous carbon for PEMFC.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,51,747-757.
MLA Yang, Yi,et al."Synergistic effects of N-doping and mesoporous structures in block copolymer-derived three-dimensionally ordered mesoporous carbon for PEMFC".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 51(2024):747-757.

入库方式： OAI收割

来源：广州能源研究所

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