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Title: Ultrafast diffusive cross-sheet motion of lithium through antimonene with a 2+1 dimensional kinetics
Authors: Kistanov, Andrey A.
Kripalani, Devesh Raju
Cai, Yongqing
Dmitriev, Sergey V.
Zhou, Kun
Zhang, Yong-Wei
Keywords: Engineering::Mechanical engineering
Issue Date: 2019
Source: Kistanov, A. A., Kripalani, D. R., Cai, Y., Dmitriev, S. V., Zhou, K. & Zhang, Y. (2019). Ultrafast diffusive cross-sheet motion of lithium through antimonene with a 2+1 dimensional kinetics. Journal of Materials Chemistry A, 7(6), 2901-2907.
Project: 152-70-00017
Journal: Journal of Materials Chemistry A
Abstract: Layered two-dimensional (2D) materials like graphene are highly appealing for lithium battery applications owing to their high surface–volume ratios. However, a critical issue that limits their practical applications is the confined motion of lithium atoms within their van der Waals gaps, which is the leading cause for battery failure due to severe clustering and phase separation. Here we demonstrate that antimonene, an exfoliatable 2D material with high structural stability, exhibits a highly mobile cross-sheet motion owing to its unique structural features. The advent of the vertically permeable channels opens a new pathway for lithium besides the normal motion along the basal plane, giving 2 + 1 dimensional kinetics. Specifically, our first-principles calculations combined with discrete geometry analysis revealed that the energy barrier for a lithium atom to diffuse across the antimonene sheet is as low as 0.36 eV, which can be further reduced to 0.18 eV under a tensile strain of 4%. These ultralow diffusion barriers across the sheet can open a new dimension for controlling the motion of lithium atoms, leading to a new paradigm for high-performance lithium batteries or inorganic solid-state lithium-ion conductors.
ISSN: 2050-7488
DOI: 10.1039/C8TA11503F
Rights: © 2019 The Royal Society of Chemistry. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MAE Journal Articles

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