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Issue 3, 2019
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Insights into the intrinsic capacity of interlayer-expanded MoS2 as a Li-ion intercalation host

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Abstract

Hierarchical MoS2 hollow nanospheres with expanded interlayer spacing are synthesized and used as intercalation hosts to clarify the role of interlayer engineering in enhancing the Li-ion storage capacity. The interlayer-expanded MoS2 possesses a high capacity of 220 mA h g−1 at 1C rate, nearly 32% higher than the theoretical capacity of pristine MoS2 (167 mA h g−1). Electrochemical characterization clarifies unambiguously that this increased capacity mainly originates from the increased Li-ion intercalation amount due to the enlarged interlayer spacing. The related mechanism is illustrated by density functional theory calculations and the universality is inspected on micro-sized MoS2. This study gives a clear insight into the intrinsic capacity of interlayer-expanded MoS2 as a Li-ion intercalation host, which can facilitate the further development of high performance MoS2-based electrodes.

Graphical abstract: Insights into the intrinsic capacity of interlayer-expanded MoS2 as a Li-ion intercalation host

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Publication details

The article was received on 21 Aug 2018, accepted on 06 Dec 2018 and first published on 08 Dec 2018


Article type: Paper
DOI: 10.1039/C8TA08120D
Citation: J. Mater. Chem. A, 2019,7, 1187-1195

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    Insights into the intrinsic capacity of interlayer-expanded MoS2 as a Li-ion intercalation host

    S. Gong, G. Zhao, P. Lyu and K. Sun, J. Mater. Chem. A, 2019, 7, 1187
    DOI: 10.1039/C8TA08120D

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