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

Abstract

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

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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, 2018, Accepted Manuscript
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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, 2018, Accepted Manuscript , DOI: 10.1039/C8TA08120D

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