A Lignosulfonate Binder for Hard Carbon Anodes in Sodium-Ion Batteries: A Comparative StudyShow others and affiliations
2021 (English)In: ACS Sustainable Chemistry and Engineering, E-ISSN 2168-0485, Vol. 9, no 37, p. 12708-Article in journal (Refereed) Published
Abstract [en]
An important factor in the development of sodium-ion batteries (SIBs) is the use of cheap and sustainable materials. Sodium lignosulfonate, a lignin derivative, is demonstrated here as an attractive, "green", water-soluble, and potentially cost-effective binder for use in hard carbon anodes for SIBs. A comparison of its battery cycling performance is made against other binders including sodium carboxymethyl cellulose and lignin, obtained from the kraft process, as well as sodium alginate, derived from algae. Apart from lignin, which requires processing in N-methyl-2-pyrrolidone, the other three binders are water-soluble. Lignosulfonate shows comparable or better performance, with high capacity retention and stability, when using 1 M NaPF6 in propylene carbonate or ethylene carbonate:diethyl carbonate electrolytes for both half- and full-cells (against a Prussian white cathode). Further improvements are observed when including styrene-butadiene rubber as a co-binder. X-ray photoelectron spectroscopy demonstrates similar solid electrolyte interphase compositions after the initial sodium insertion for both lignosulfonate and carboxymethyl cellulose binders. However, after subsequent cycling, the surface layer composition and thickness are found to be dependent on the binder. For the lignosulfonate-based electrode, the layer appears thicker but comprises a smaller fraction of carbon-oxygen species. © 2021 The Authors.
Place, publisher, year, edition, pages
American Chemical Society , 2021. Vol. 9, no 37, p. 12708-
Keywords [en]
hard carbon, lignosulfonate, sodium-ion battery, sustainable binders, X-ray photoelectron spectroscopy, Anodes, Binders, Carbon, Carbonation, Cellulose, Cost effectiveness, Ethylene, Fluorine compounds, Kraft process, Lignin, Metal ions, Phosphorus compounds, Sodium alginate, Sodium metallography, Solid electrolytes, Styrene, X ray photoelectron spectroscopy, Carboxy-methyl cellulose, N-methyl-2-pyrrolidone, Sodium carboxymethyl cellulose, Sodium lignosulfonates, Solid electrolyte interphase, Styrene butadiene rubber, Surface layer composition, Sustainable materials, Sodium-ion batteries
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:ri:diva-56706DOI: 10.1021/acssuschemeng.1c05263Scopus ID: 2-s2.0-85115167499OAI: oai:DiVA.org:ri-56706DiVA, id: diva2:1599632
Note
Funding details: Energimyndigheten, 48198-1; Funding text 1: The project was financially supported by ÅForsk via grant 19-638 and the Swedish Energy Agency (project no. 48198-1). The authors would like to acknowledge STandUP for Energy.
2021-10-012021-10-012024-03-03Bibliographically approved