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

2021-12-01

10.1002/adsu.202100343

Advanced Sustainable Systems   影响因子和分区

2366-7486

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 IrO2 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(NO3)(2), ZnCl2, H3BO3, NH4Cl in a hydrothermal reaction. The pyrolytic evaporation of Zn2+ in a high-temperature carbonization process facilitates the generation of abundant micropores and mesopores to increase specific surface areas (941.44 m(2) g(-1)) 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 IrO2 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.

ORR/OER catalysts porous cornstalks synergistic effects working stability ZnCl2

SCI ; EI

英语

其他

Guangdong Basic and Applied Basic Research Foundation of Guangdong Province[2020A1515011013] ; Science and Technology Planning Project of Guangdong Province[2020A050515004] ; Leading Talents of Guangdong Province Program[2016LJ06C536] ; Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials[ZDSYS20200421111401738] ; Guangdong-Hong Kong-Macao Joint Laboratory[2019B121205001] ; Basic Research Project of the Science and Technology Innovation Commission of Shenzhen[JCYJ20200109141640095] ; Science and Technology Development Fund from Macau SAR (FDCT)["0102/2019/A2","0035/2019/AGJ","0154/2019/A3","0081/2019/AMJ","0033/2019/AMJ"]

Science & Technology - Other Topics ; Materials Science

Green & Sustainable Science & Technology ; Materials Science, Multidisciplinary

WOS:000724914700001

WILEY-V C H VERLAG GMBH

20214911273080

Agricultural wastes ; Agriculture ; Carbonization ; Chlorine compounds ; Computation theory ; Cost effectiveness ; Density functional theory ; Electrocatalysts ; Electrolytic reduction ; Platinum compounds ; Zinc chloride

Metallurgy and Metallography:531 ; Ore Treatment:533.1 ; Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory:721.1 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Agricultural Equipment and Methods; Vegetation and Pest Control:821 ; Agricultural Wastes:821.5 ; Industrial Economics:911.2 ; Probability Theory:922.1 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4

Web of Science

1.South China Univ Technol, Sch Light Ind & Engn, Guangzhou 510640, Peoples R China
2.Univ Macau, Inst Appl Phys & Mat Engn, Joint Key Lab Minist Educ, Macau 999078, Peoples R China
3.Southern Univ Sci & Technol China, Dept Mat Sci & Engn, Shenzhen Key Lab Interfacial Sci & Engn Mat, Guangdong Hong Kong Macao Joint Lab Photon Therma, Shenzhen 518055, Peoples R China
4.Guangzhou Univ, Acad Bldg Energy Efficiency, Guangdong Prov Key Lab Bldg Energy Efficiency & A, Sch Civil Engn, Guangzhou 510006, Peoples R China

Li, Yinghui,Qu, Yuanju,Liu, Chaocheng,et al. Processing Agricultural Cornstalks toward High-Efficient Stable Bifunctional ORR/OER Electrocatalysts[J]. Advanced Sustainable Systems,2021,6.

Li, Yinghui.,Qu, Yuanju.,Liu, Chaocheng.,Cui, Jiedong.,Xu, Ke.,...&Liu, Detao.(2021).Processing Agricultural Cornstalks toward High-Efficient Stable Bifunctional ORR/OER Electrocatalysts.Advanced Sustainable Systems,6.

Li, Yinghui,et al."Processing Agricultural Cornstalks toward High-Efficient Stable Bifunctional ORR/OER Electrocatalysts".Advanced Sustainable Systems 6(2021).