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Achieving High Energy Dual-Carbon Li-ion Capacitor with Unique Low- and High Temperature Performance from Spent Li-ion Batteries

Abstract

Graphite, an ordered layered structure dominates as a stable electrode material since the commercialization of lithium-ion batteries (LIBs) which could increase a huge demand owing to the usage in forthcoming graphite-based energy storage devices. In this work, we propose an efficient route to reutilize the recovered graphite (RG) from spent LIBs as an anode material for the fabrication of a lithium-ion capacitor (LIC) after required treatment. It is found that the RG displayed a first excellent performance in the half-cell configuration and further encourages to assemble the full cell using activated carbon as a cathode. Prior to the fabrication of LIC, the RG is pre-lithiated (LiC6) to form a graphite intercalation compound to supply Li-ions. Thus, resultant dual-carbon LIC in aprotic organic solvent delivered a maximum energy density of 185.54 Wh kg―1 at a power density of 0.319 kW kg―1 in ambient conditions. Furthermore, different temperature performance analysis revealed that the assembled LIC presents a good cycling performance of continuous 2000 cycles with ~75% capacity retention at 10 and 25 ºC. The developed dual carbon-based LIC using recuperated RG from spent LIBs acquires promising features of low cost and applicability in wide temperature operations as well as providing a real solution to recycle the upcoming massive quantity of spent LIBs generated by different electronic appliances.

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Supplementary files

Article information


Submitted
19 Dec 2019
Accepted
08 Feb 2020
First published
10 Feb 2020

J. Mater. Chem. A, 2020, Accepted Manuscript
Article type
Paper

Achieving High Energy Dual-Carbon Li-ion Capacitor with Unique Low- and High Temperature Performance from Spent Li-ion Batteries

V. Aravindan FRSC, Y. Lee, S. Natarajan and M. Divya, J. Mater. Chem. A, 2020, Accepted Manuscript , DOI: 10.1039/C9TA13913C

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