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Staging Na/K-ion de-/intercalation of graphite retrieved from spent Li-ion batteries: in operando X-ray diffraction studies and an advanced anode material for Na/K-ion batteries

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Abstract

The graphite material from exhausted Li-ion batteries (LIBs) is reused as a favorable anode for Na-ion batteries (NIBs) and K-ion batteries (KIBs) through a recycling treatment. The optimized electrode delivers improved electrochemical performance, such as 162 mA h g−1 in NIBs at 0.2 A g−1 and 320 mA h g−1 in KIBs at 0.05 A g−1. In addition, the insights into Na/K-ion de-/intercalation model evolution and corresponding electrochemical analysis are conducted through in operando X-ray diffraction and a series of other characterization methods, discovering a visible transitional stage for NIBs and an irreversible initial cycle phase transformation for KIBs. In a word, we not only provide a new recycling concept for waste graphite anodes but also carry out a series of significant intercalation mechanism studies, which contribute to anode recycling and shed light on the development of graphite material for promising alternative ion batteries.

Graphical abstract: Staging Na/K-ion de-/intercalation of graphite retrieved from spent Li-ion batteries: in operando X-ray diffraction studies and an advanced anode material for Na/K-ion batteries

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Publication details

The article was received on 07 Jul 2019, accepted on 23 Oct 2019 and first published on 06 Nov 2019


Article type: Paper
DOI: 10.1039/C9EE02759A
Energy Environ. Sci., 2019, Advance Article

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    Staging Na/K-ion de-/intercalation of graphite retrieved from spent Li-ion batteries: in operando X-ray diffraction studies and an advanced anode material for Na/K-ion batteries

    H. Liang, B. Hou, W. Li, Q. Ning, X. Yang, Z. Gu, X. Nie, G. Wang and X. Wu, Energy Environ. Sci., 2019, Advance Article , DOI: 10.1039/C9EE02759A

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