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Hierarchical soot nanoparticle self-assemblies for enhanced performance as sodium-ion battery anodes
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Polymeric Materials.ORCID iD: 0000-0002-4932-5303
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fibre Technology.ORCID iD: 0000-0002-8909-8846
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology. KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center.ORCID iD: 0000-0003-2168-4504
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.ORCID iD: 0000-0002-7929-5985
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2022 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, E-ISSN 2050-7496, Vol. 10, no 16, p. 9059-9066Article in journal (Refereed) Published
Abstract [en]

The drawbacks of amorphous hard carbon are its low conductivity and structural instability, due to its large volume change and the occurrence of side reactions with the electrolyte during cycling. Here, we propose a simple and rapid method to address these disadvantages; we used an emulsion solvent-evaporation method to create hierarchically structured microparticles of hard carbon nanoparticles, derived from soot, and multi-walled-carbon-nanotubes at a very low threshold of 2.8 wt%. These shrub-ball like microparticles have well-defined void spaces between different nanostructures of carbon, leading to an increased surface area, lower charge-resistance and side reactions, and higher electronic conductivity for Na+ insertion and de-insertion. They can be slurry cast to assemble Na+ anodes, exhibiting an initial discharge capacity of 713.3 mA h g(-1) and showing long-term stability with 120.8 mA h g(-1) at 500 mA g(-1) after 500 cycles, thus outperforming neat hard carbon nanoparticles by an order of magnitude. Our work shows that hierarchical self-assembly is attractive for increasing the performance of microparticles used for battery production.

Place, publisher, year, edition, pages
Royal Society of Chemistry (RSC) , 2022. Vol. 10, no 16, p. 9059-9066
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-311641DOI: 10.1039/d1ta10889aISI: 000780328500001Scopus ID: 2-s2.0-85127876353OAI: oai:DiVA.org:kth-311641DiVA, id: diva2:1655276
Note

QC 20220502

Available from: 2022-05-02 Created: 2022-05-02 Last updated: 2022-11-29Bibliographically approved

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Cui, YuxiaoSubramaniyam, Chandrasekar M.Li, LengwanHan, TongKang, MinaLi, JianZhao, LuyaoWei, Xin-FengSvagan, Anna JustinaHamedi, Mahiar

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Cui, YuxiaoSubramaniyam, Chandrasekar M.Li, LengwanHan, TongKang, MinaLi, JianZhao, LuyaoWei, Xin-FengSvagan, Anna JustinaHamedi, Mahiar
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Polymeric MaterialsFibre TechnologyFibre- and Polymer TechnologyWallenberg Wood Science CenterMaterials Science and Engineering
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Journal of Materials Chemistry A
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