Cited by 65Advancements in Battery MaterialsThermochemical Biomass Conversion ProcessesGraphite, nuclear technology, radiation studies

Sustainable conversion of biomass to rationally designed lithium-ion battery graphite

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Banek, Nathan A., McKenzie, Kevin R., Abele, Dustin T., Wagner, Michael J.·2022·Scientific Reports

Abstract

The carbon net negative conversion of bio-char, the low value byproduct of pyrolysis bio-oil production from biomass, to high value, very high purity, highly crystalline flake graphite agglomerates with rationally designed shape and size tailored for lithium-ion battery energy storage material is reported. The process is highly efficient, 0.41 g/Wh; the energy content of its co-product of the process, bio-oil, exceeds that needed to power the process. It is shown that the shape of the starting material is retained during the transformation, allowing the ultimate morphology of the graphite agglomerates to be engineered from relatively malleable biomass. In contrast to commercial graphite production, the process can be performed at small scale with low equipment costs, enabling individual research laboratories to produce Li-ion grade graphite with customizable shape, size and porosity for Si/graphite composite and other graphite involved anodes. The mechanism of the graphitization of bio-char, a "non-graphitizable" carbon, is explored, suggesting the molten metal catalyst is absorbed into the pore structure, transported through and transforming the largely immobile biochar. Finally, the transformation of biomass to rationally designed graphite morphologies with Li-ion anode performance that closely mimic commercial shaped graphite is demonstrated.

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  • Catalytic graphitization of biochar, obtained from the pyrolysis of biomass waste or energy crops, has shown GHG emissions intensities between 1.2 and 3.5 kg CO2-equiv kg-1 battery-grade graphite.

    “Catalytic graphitization of biochar, obtained from the pyrolysis of biomass waste or energy crops, has shown GHG emissions intensities between 1.2 and 3.5 kg CO2-equiv kg 1 battery-grade graphite. 91,92”

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Authors
Banek, N. A., McKenzie, K. R., Abele, D. T., & Wagner, M. J.
Affiliations
George Washington University (US)
Corresponding author
Wagner, Michael J.
Venue
Scientific Reports
Published
2022-05-16
Volume
12
Issue
1
Pages
8080-8080
ISSN
2045-2322 (ISSN-L)
OpenAlex
W4280488448
Cited by
65
References
27
Citations by year
2026: 13 · 2025: 20 · 2024: 17 · 2023: 9 · 2022: 6
FWCI
3.56
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
Funders
  • National Reconnaissance Office (NRO000-14-C-0335)
  • Intelligence Community Postdoctoral Research Fellowship Program
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advancements in Battery Materials
  • Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
  • Physical Sciences › Materials Science › Materials Chemistry › Graphite, nuclear technology, radiation studies
Keywords
biomass conversion, biochar, lithium-ion battery anodes, bio-oil, energy storage materials
MeSH terms
Carbon, Graphite, Ions, Lithium, Electric Power Supplies, Biomass

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