Please use this identifier to cite or link to this item: https://doi.org/10.1002/adma.201900341
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dc.titleHierarchically Porous Carbon Plates Derived from Wood as Bifunctional ORR/OER Electrodes
dc.contributor.authorPeng, Xinwen
dc.contributor.authorZhang, Lei
dc.contributor.authorChen, Zhongxin
dc.contributor.authorZhong, Linxin
dc.contributor.authorZhao, Dengke
dc.contributor.authorChi, Xiao
dc.contributor.authorZhao, Xiaoxu
dc.contributor.authorLi, Ligui
dc.contributor.authorLu, Xihong
dc.contributor.authorLeng, Kai
dc.contributor.authorLiu, Cuibo
dc.contributor.authorLiu, Wei
dc.contributor.authorTang, Wei
dc.contributor.authorLoh, Kian Ping
dc.date.accessioned2020-07-21T01:52:05Z
dc.date.available2020-07-21T01:52:05Z
dc.date.issued2019-04-19
dc.identifier.citationPeng, Xinwen, Zhang, Lei, Chen, Zhongxin, Zhong, Linxin, Zhao, Dengke, Chi, Xiao, Zhao, Xiaoxu, Li, Ligui, Lu, Xihong, Leng, Kai, Liu, Cuibo, Liu, Wei, Tang, Wei, Loh, Kian Ping (2019-04-19). Hierarchically Porous Carbon Plates Derived from Wood as Bifunctional ORR/OER Electrodes. ADVANCED MATERIALS 31 (16). ScholarBank@NUS Repository. https://doi.org/10.1002/adma.201900341
dc.identifier.issn09359648
dc.identifier.issn15214095
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/171626
dc.description.abstract© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Porous carbon electrodes have emerged as important cathode materials for metal–air battery systems. However, most approaches for fabricating porous carbon electrodes from biomass are highly energy inefficient as they require the breaking down of the biomass and its subsequent reconstitution into powder-like carbon. Here, enzymes are explored to effectively hydrolyze the partial cellulose in bulk raw wood to form a large number of nanopores, which helps to maximally expose the inner parts of the raw wood to sufficiently dope nitrogen onto the carbon skeletons during the subsequent pyrolysis process. The resulting carbons exhibit excellent catalytic activity with respect to the oxygen reduction and oxygen evolution reactions. As-fabricated cellulose-digested, carbonized wood plates are mechanically strong, have high conductivity, and contain a crosslinked network and natural ion-transport channels and can be employed directly as metal-free electrodes without carbon paper, polymer binders, or carbon black. When used as metal-free cathodes in zinc–air batteries, they result in a specific capacity of 801 mA h g −1 and an energy density of 955 W h kg −1 with the long-term stability of the batteries being as high as 110 h. This work paves the way for the ready conversion of abundant biomass into high-value engineering products for energy-related applications.
dc.language.isoen
dc.publisherWILEY-VCH VERLAG
dc.sourceElements
dc.subjectScience & Technology
dc.subjectPhysical Sciences
dc.subjectTechnology
dc.subjectChemistry, Multidisciplinary
dc.subjectChemistry, Physical
dc.subjectNanoscience & Nanotechnology
dc.subjectMaterials Science, Multidisciplinary
dc.subjectPhysics, Applied
dc.subjectPhysics, Condensed Matter
dc.subjectChemistry
dc.subjectScience & Technology - Other Topics
dc.subjectMaterials Science
dc.subjectPhysics
dc.subjectbulk transformation
dc.subjecthierarchical structures
dc.subjectnature inspired
dc.subjectwood-based materials
dc.subjectZn-air batteries
dc.subjectMETAL-FREE CATALYSTS
dc.subjectOXYGEN REDUCTION
dc.subjectDOPED CARBON
dc.subjectELECTROCATALYSTS
dc.subjectNITROGEN
dc.subjectPOLYANILINE
dc.subjectTEMPLATES
dc.typeArticle
dc.date.updated2020-05-31T14:07:56Z
dc.contributor.departmentCHEMICAL & BIOMOLECULAR ENGINEERING
dc.contributor.departmentCHEMISTRY
dc.contributor.departmentMATERIALS SCIENCE AND ENGINEERING
dc.description.doi10.1002/adma.201900341
dc.description.sourcetitleADVANCED MATERIALS
dc.description.volume31
dc.description.issue16
dc.published.statePublished
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