Energy‐Efficient Induction Carbonization: Tailoring Pore Structures in Hard Carbon Anodes Toward Enhanced Electrochemical Performance
Carbon Energy, vol. 8
Abstract
ABSTRACT Hard carbon (HC) is currently the predominant anode material for sodium‐ion batteries; however, its practical application is still limited by insufficient initial Coulombic efficiency (ICE) and plateau capacity. Meanwhile, conventional HC production relies on energy‐intensive carbonization processes with considerable carbon emissions. Here, an induction heating carbonization strategy is developed for extruded biocarbon columns derived from biomass‐based biochar and bio‐oil, enabling simultaneous enhancement of electrochemical performance and production sustainability. Bio‐oil combined with high‐pressure extrusion suppresses open pores, whereas induction heating generates localized eddy currents and concentrated Joule heating that accelerate carbon rearrangement and promote closed pore formation. As a result, the closed‐to‐open pore volume ratio increases from 0.32 to 85.18, leading to improved ICE (95.0% vs. 84.4%) and plateau capacity ratio (77.6% vs. 64.7%) relative to conventional carbonized HC. Life‐cycle assessment further indicates an approximately 35% reduction in global warming potential. Overall, this work presents an energy‐efficient, low‐emission route for producing high‐performance HC anodes.
Authors 19
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KTH Royal Institute of Technology
Affiliation as printed
Department of Material Science and Engineering KTH Royal Institute of Technology Stockholm Sweden
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Affiliation as printed
Interdisciplinary Research Center for Sustainable Energy Science and Engineering (IRC4SE2), School of Chemical Engineering Zhengzhou University Zhengzhou Henan China
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KTH Royal Institute of Technology
Affiliation as printed
Department of Material Science and Engineering KTH Royal Institute of Technology Stockholm Sweden
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Affiliation as printed
Department of Chemistry—Ångström Laboratory Uppsala University Uppsala Sweden
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Karlsruhe Institute of Technology · RWTH Aachen University
Affiliation as printed
Institute for Technology Assessment and Systems Analysis (ITAS) Karlsruhe Institute of Technology Karlsruhe Germany
Institute of Technical Thermodynamics RWTH Aachen University Aachen Germany
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State Key Laboratory of Coal Combustion · Huazhong University of Science and Technology · KTH Royal Institute of Technology
Affiliation as printed
Department of Material Science and Engineering KTH Royal Institute of Technology Stockholm Sweden
State Key Laboratory of Coal Combustion, School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan Hubei China
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Affiliation as printed
Department of Chemistry—Ångström Laboratory Uppsala University Uppsala Sweden
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Affiliation as printed
Department of Chemistry—Ångström Laboratory Uppsala University Uppsala Sweden
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KTH Royal Institute of Technology
Affiliation as printed
Department of Material Science and Engineering KTH Royal Institute of Technology Stockholm Sweden
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Affiliation as printed
Department of Chemistry—Ångström Laboratory Uppsala University Uppsala Sweden
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Affiliation as printed
Interdisciplinary Research Center for Sustainable Energy Science and Engineering (IRC4SE2), School of Chemical Engineering Zhengzhou University Zhengzhou Henan China
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Karlsruhe Institute of Technology
Affiliation as printed
Institute for Technology Assessment and Systems Analysis (ITAS) Karlsruhe Institute of Technology Karlsruhe Germany
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Karlsruhe Institute of Technology · Helmholtz-Institute Ulm
Affiliation as printed
Helmholtz Institute Ulm (HIU) Ulm Germany
Institute for Technology Assessment and Systems Analysis (ITAS) Karlsruhe Institute of Technology Karlsruhe Germany
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State Key Laboratory of Materials Processing and Die & Mould Technology · Huazhong University of Science and Technology
Affiliation as printed
State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and engineering Huazhong University of Science and Technology Wuhan Hubei China
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State Key Laboratory of Coal Combustion · Huazhong University of Science and Technology · KTH Royal Institute of Technology
Affiliation as printed
Department of Material Science and Engineering KTH Royal Institute of Technology Stockholm Sweden
State Key Laboratory of Coal Combustion, School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan Hubei China
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Affiliation as printed
Department of Chemistry—Ångström Laboratory Uppsala University Uppsala Sweden
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KTH Royal Institute of Technology
Affiliation as printed
Department of Material Science and Engineering KTH Royal Institute of Technology Stockholm Sweden
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KTH Royal Institute of Technology
Affiliation as printed
Department of Material Science and Engineering KTH Royal Institute of Technology Stockholm Sweden
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Tong Han corresponding
State Key Laboratory of Coal Combustion · Huazhong University of Science and Technology · KTH Royal Institute of Technology
Affiliation as printed
Department of Material Science and Engineering KTH Royal Institute of Technology Stockholm Sweden
State Key Laboratory of Coal Combustion, School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan Hubei China
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