Upcycling of plastic waste into carbon nanotubes as efficient battery additives

Carbon nanotubes (CNTs) were produced from waste face masks and non-recyclable mixed plastic waste via pyrolysis-chemical vapor deposition (CVD). The yield and properties of the prepared CNTs depended on the feedstock and catalyst used. CoMo/MgO and FeMo/MgO were proven suitable catalysts for produc...

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Published in:Green chemistry : an international journal and green chemistry resource : GC 2023-10, Vol.25 (2), p.87-818
Main Authors: Nam, Eonu, Park, Gyori, Nam, Ji Young, Park, Sooryun, Jo, Yoonjeong, Kim, Jihun, Park, Byung Gwan, Baek, Kyungeun, Kang, Seok Ju, Ra, Ho Won, Park, Youngsoo, Seo, Myung Won, Lee, Kyung Jin, An, Kwangjin
Format: Article
Language:English
Subjects:
Additives
Black carbon
Carbon
Carbon black
Carbon nanotubes
Catalysts
Cathodes
Chemical vapor deposition
Electrochemistry
Gas separation
Green chemistry
Magnesium oxide
Nanotechnology
Nanotubes
Plastic debris
Polyvinylidene fluorides
Pyrolysis
Raw materials
Vinylidene fluoride
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Summary:Carbon nanotubes (CNTs) were produced from waste face masks and non-recyclable mixed plastic waste via pyrolysis-chemical vapor deposition (CVD). The yield and properties of the prepared CNTs depended on the feedstock and catalyst used. CoMo/MgO and FeMo/MgO were proven suitable catalysts for producing few-walled and multi-walled CNTs, respectively, regardless of the feedstock. Both mask waste and the FeMo/MgO catalyst led to excellent carbon yield (516.7 wt%) and CNT purity (97.9 wt%). The resulting CNTs were mixed with LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) active material and poly(vinylidene fluoride) binder to fabricate cathodes. Electrochemical measurements showed that CNTs grown on the FeMo/MgO catalyst outperformed commercial carbon black and CNTs. C 1 -C 3 hydrocarbons and H 2 present in the plastic pyrolysis gas can be directly used for CNT production without gas separation or purification, therefore, the proposed pyrolysis-CVD process is favorable for efficient plastic upcycling and advanced battery applications. Carbon nanotubes (CNTs) were produced from waste face mask and non-recyclable mixed plastic waste via pyrolysis-chemical vapor deposition (CVD).
ISSN:1463-9262
1463-9270
DOI:10.1039/d3gc02100a