Evolution of Protrusions on Lithium Metal Anodes Stabilized by a Solid Block Copolymer Electrolyte Studied Using Time-Resolved X-ray Tomography

نویسندگان

چکیده

Growing demand for rechargeable batteries with higher energy densities has motivated research focused on enabling the lithium metal anode. A prominent failure mechanism in such is short circuiting due to uncontrolled propagation of protrusions that often have a dendritic morphology. In this paper, electrodeposition metallic through rigid polystyrene-b-poly(ethylene oxide) (PS-b-PEO or SEO) block copolymer electrolyte was studied using hard X-ray microtomography. system, were approximately ellipsoidal globules: we take advantage simple geometry quantify their growth as function polarization time and salt concentration. The 47 different globules tracked obtain average velocities globule into electrolyte. diameter linear height slope about 6, independent

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ژورنال

عنوان ژورنال: ACS Applied Materials & Interfaces

سال: 2021

ISSN: ['1944-8244', '1944-8252']

DOI: https://doi.org/10.1021/acsami.1c04582