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Processing Agricultural Cornstalks toward High-Efficient Stable Bifunctional ORR/OER Electrocatalysts
Li, Yinghui1; Qu, Yuanju2; Liu, Chaocheng1; Cui, Jiedong1; Xu, Ke1; Li, Yang1; Shen, Haoyu1; Lu, Zhouguang3; Pan, Hui2; Xu, Tao4; Liu, Detao1
2022-01
Source PublicationAdvanced Sustainable Systems
ISSN2366-7486
Volume6Issue:1
Abstract

Bifunctional oxygen reduction/oxidation reaction (ORR/OER) electrocatalysts derived from biomass are one of the most valuable materials in terms of sustainability, ecological economy and industrial manufacturing, and are emerging as a desired alternative to the commercial Pt/C and IrO catalysts. This work demonstrates the processing of agricultural cornstalk waste of cornstalks into stable bifunctional ORR/OER catalysts with high-performance by a simple and cost-effective strategy. Rich hydrophilic active groups (e.g., hydroxyl groups) in the hierarchical porous structures of the native cornstalks enable the sufficient facile combination with transition metals (e.g., Co, Fe, Zn) and heteroatoms (e.g., B, N) from soluble Co(NO), ZnCl, HBO, NHCl in a hydrothermal reaction. The pyrolytic evaporation of Zn in a high-temperature carbonization process facilitates the generation of abundant micropores and mesopores to increase specific surface areas (941.44 m g) and also hinders aggregation between neighboring transition metals. The synergistic effects of N, B, Fe and Co doping in hierarchical porous biochar-structures contributes to outstanding bifunctional ORR/OER activities and working stabilities, outperforming commercial Pt/C and IrO catalysts. Computational results further verify the valuable synergistic contributions based on density-functional theory (DFT). This approach opens up a new possibility for the fabrication of bifunctional biochar-based ORR/OER catalysts from artificial engineering and green processing for sustainable agricultural wastes.

DOI10.1002/adsu.202100343
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectGreen & Sustainable Science & Technology ; Materials Science, Multidisciplinary
WOS IDWOS:000724914700001
Scopus ID2-s2.0-85120375148
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Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorLiu, Detao
Affiliation1.School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, China
2.Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, 999078, China
3.Department of Materials Science and Engineering, Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology of China, Shenzhen, 518055, China
4.Guangdong Provincial Key Laboratory of Building Energy Efficiency and Application Technologies, Academy of Building Energy Efficiency, School of Civil, Engineering, Guangzhou University, Guangzhou, 510006, China
Recommended Citation
GB/T 7714
Li, Yinghui,Qu, Yuanju,Liu, Chaocheng,et al. Processing Agricultural Cornstalks toward High-Efficient Stable Bifunctional ORR/OER Electrocatalysts[J]. Advanced Sustainable Systems,2022,6(1).
APA Li, Yinghui,Qu, Yuanju,Liu, Chaocheng,Cui, Jiedong,Xu, Ke,Li, Yang,Shen, Haoyu,Lu, Zhouguang,Pan, Hui,Xu, Tao,&Liu, Detao.(2022).Processing Agricultural Cornstalks toward High-Efficient Stable Bifunctional ORR/OER Electrocatalysts.Advanced Sustainable Systems,6(1).
MLA Li, Yinghui,et al."Processing Agricultural Cornstalks toward High-Efficient Stable Bifunctional ORR/OER Electrocatalysts".Advanced Sustainable Systems 6.1(2022).
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