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Hierarchical porous carbon nanosheet derived from waste engine oil for high-performance supercapacitor application

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Abstract

The utilization of electrode materials with high-performance and low-cost is crucial for the development of electrochemical energy storage devices. Waste engine oil is a toxic and hazardous waste; it is estimated that about 45 million tons of waste engine oil are generated per year worldwide. Herein, waste engine oil was first recycled as a raw material to fabricate hierarchical porous carbon nanosheets. The obtained material exhibited high specific surface area (up to 2276 m2 g−1), hierarchical porous structure, and excellent capacitance performance. Its specific capacitance reached 352 F g−1, and more than 87.7% of initial capacitance was retained when the current density was increased from 0.5 to 20 A g−1. In addition, no apparent capacitance drop was observed after 5000 charge and discharge cycles. The superior capacitance performance than that of the commercial activated carbon and most of the waste-derived porous carbons, cheap and readily available raw materials, and environmental benefit due to proper recycling of the hazardous waste make the reported hierarchical porous carbon nanosheet a promising energy storage material.

Graphical abstract: Hierarchical porous carbon nanosheet derived from waste engine oil for high-performance supercapacitor application

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Publication details

The article was received on 06 Sep 2018, accepted on 08 Dec 2018 and first published on 11 Dec 2018


Article type: Paper
DOI: 10.1039/C8SE00449H
Citation: Sustainable Energy Fuels, 2019, Advance Article
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    Hierarchical porous carbon nanosheet derived from waste engine oil for high-performance supercapacitor application

    Y. Li, D. Zhang, J. He, Y. Wang, X. Zhang, Y. Zhang, X. Liu, K. Wang and Y. Wang, Sustainable Energy Fuels, 2019, Advance Article , DOI: 10.1039/C8SE00449H

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