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Mass production of hierarchically porous carbon nanosheets by carbonizing “real-world” mixed waste plastics toward excellent-performance supercapacitors
Abstract
Recently, sustainable development and serious energy crisis called for appropriate managements for the large number of municipal and industrial waste plastics as well as the development of low-cost, advanced materials for energy storage. However, the complexity of waste plastics significantly hampers the application of ever used methods, and little attention is paid to the utilization of waste plastics-derived carbon in energy storage. Herein, porous carbon nanosheets (PCNSs) was produced by catalytic carbonization of "real-world" mixed waste plastics on organically-modified montmorillonite (OMMT) and the subsequent KOH activation. PCNSs was featured on hierarchically micro-/mesoporous structures with the pore size distribution centered on 0.57, 1.42 and 3.63 nm and partially exfoliated graphitic layers, and showed a high specific surface area of 2198 m 2 g-1 and a large pore volume of 3.026 cm 3 g-1. Benefiting from these extraordinary properties, PCNSs displayed a superior performance for supercapacitors with high specific capacitances approaching 207 and 120 F g-1 at a current density of 0.2 A g-1 in aqueous and organic electrolytes, respectively. Importantly, when the current density increased to 10 A g-1, the specific capacitances remained at 150 F g-1 (72.5%) and 95 F g-1 (79.2%) in aqueous and organic electrolytes, respectively. The outstanding rate capability of PCNSs was in sharp contrast to the performance of traditional activated carbons. This work not only provides a potential way to recycle mixed waste plastics, but also puts forward a facile sustainable approach for the large-scale production of PCNSs as a promising candidate for supercapacitors.
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“Porous MgO template can not only promote the decomposition of polymers, but also promote the formation of porous carbon nanosheets as a sacrificial template, while organically modified montmorillonite, as an active template, can introduce more Brønsted acid sites to catalyze the decomposition of plastics and improve carbon emissions, but it cannot generate pores on carbon nanosheets (Wen et al. 2”
From Conversion of waste plastics into value-added carbon materials (2023) · cites this paper as Wen et al. 2019
In the citing paper
“Porous MgO template can not only promote the decomposition of polymers, but also promote the formation of porous carbon nanosheets as a sacrificial template, while organically modified montmorillonite, as an active template, can introduce more Brønsted acid sites to catalyze the decomposition of plastics and improve carbon emissions, but it cannot generate pores on carbon nanosheets (Wen et al. 2”
From Conversion of waste plastics into value-added carbon materials (2023) · cites this paper as Wen et al. 2019
In the citing paper
“Wen et al. carbonized the waste plastics, such as waste woven bags, waste containers, waste foam sheets, waste beverage bottles and waste sewage pipes to produce porous carbon nanosheets with multi-stage porous structure and high surface area (Wen et al. 2019).”
From Conversion of waste plastics into value-added carbon materials (2023) · cites this paper as Wen et al. 2019
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Metadata
- Authors
- Wen, Y., Kierzek, K., Chen, X., Gong, J., Liu, J., Niu, R., Mijowska, E., & Tang, T.
- Affiliations
- West Pomeranian University of Technology in Szczecin (PL)
- Wrocław University of Science and Technology (PL)
- Huazhong University of Science and Technology (CN)
- Chinese Academy of Sciences (CN)
- Cornell University (US)
- Corresponding author
- Chen, Xuecheng
- Gong, Jiang
- Tang, Tao
- Venue
- Waste Management
- Publisher
- Elsevier BV
- Published
- 2019-03
- Volume
- 87
- Pages
- 691-700
- ISSN
- 0956-053X (ISSN-L)
- OpenAlex
- W2921872685
- Cited by
- 127
- References
- 70
- Citations by year
- 2026: 10 · 2025: 23 · 2024: 23 · 2023: 15 · 2022: 23 · 2021: 16 · 2020: 12 · 2019: 5
- FWCI
- 4.34
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Waste Management (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Natural Science Foundation of China (51373171, 50873099, 20804045)
- National Science Centre, Poland (UMO-2015/18/E/ST8/00291)
- Huazhong University of Science and Technology
- Topics
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Supercapacitor Materials and Fabrication
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
- Physical Sciences › Materials Science › Materials Chemistry › MXene and MAX Phase Materials
- Keywords
- plastic recycling, porous carbon nanosheets, hierarchical porosity, supercapacitors, catalytic carbonization, organically modified montmorillonite, KOH activation, specific capacitance, rate capability, energy storage, waste-derived carbon
- MeSH terms
- Carbon, Graphite, Plastics, Porosity, Electric Capacitance
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