Biochar as a Renewable Substitute for Carbon Black in Lithium-Ion Battery Electrodes

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Date

2022-09

Journal Title

Journal ISSN

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Publisher

American Chemical Society

Abstract

Lignin-derived biochar was prepared and characterized toward potential applications as a conductive electrode additive and active lithium host material within lithium-ion batteries (LIBs). This biochar was specifically selected for its high electrical conductivity, which is comparable to that of common conductive carbon black standards (e.g., Super P). Owing to its high electrical conductivity, this biochar serves as an effective conductive additive within electrodes comprising graphite as the active material, demonstrating slightly improved cell efficiency and rate capability over those of electrodes using carbon black as the additive. Despite its effectiveness as a conductive additive in LIB anodes, preliminary results show that the biochar developed in this work is not suitable as a direct replacement for carbon black as a conductive additive in LiFePO4 cathodes. This latter insufficiency may be due to differences in particle geometry between biochar and carbon black; further optimization is necessary to permit the application of biochar as a general-purpose conductive additive in LIBs. Nevertheless, these investigations combined with an assessment of greenhouse gas emissions from biochar production show that replacing carbon black with biochar can be an effective method to improve the sustainability of LIBs.

Description

This is the peer reviewed version of the following article: [Attraction, Entrance, and Passage Efficiency of Arctic Grayling, Trout, and Suckers at Denil Fishways in the Big Hole River Basin, Montana. Transactions of the American Fisheries Society 151, 4 p453-473 (2022)], which has been published in final form at https://doi.org/10.1002/tafs.10362. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions: https://authorservices.wiley.com/author-resources/Journal-Authors/licensing/self-archiving.html#3.

Keywords

electrical conductivity, graphitic carbon, lignin-derived biocarbon, anode, cathode, electrochemical energy storage, conductive additive

Citation

Seth Kane, Aksiin Storer, Wei Xu, Cecily Ryan, and Nicholas P. Stadie ACS Sustainable Chemistry & Engineering 2022 10 (37), 12226-12233 DOI: 10.1021/acssuschemeng.2c02974
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