Stabilizing dendritic electrodeposition by limiting spatial dimensions in nanostructured electrolytes

Daniel Sharon; Peter Bennington; Shrayesh N. Patel; Paul F. Nealey

doi:10.1021/acsenergylett.0c01543

Stabilizing dendritic electrodeposition by limiting spatial dimensions in nanostructured electrolytes

Daniel Sharon
, Peter Bennington
, Shrayesh N. Patel
, Paul F. Nealey

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

The tendency of metals to form uncontrolled dendritic morphologies during electrodeposition hinders the development of safe and reliable metal batteries. Multiphase nanostructured electrolytes can suppress dendritic growth if the mechanical modulus of the electrolyte is high relative to that of the metal or if the conducting channels are confined to nanoscale dimensions. Direct visualization and analysis of electrodeposition within polymeric nanostructures elucidates the structure-property relationships and mechanisms underlying the suppression of dendrite growth. Here, we fabricate precisely structured multiphase films composed of nanochannels of a polymeric electrolyte in a background of nonconductive polymer on top of coplanar electrodes. The devices enable imaging and analysis of electrodeposition behavior as a function of channel width by scanning electron microscopy. We find that electrodeposition is confined to individual conductive channels and that radial propagation of the dendritic morphology is suppressed in channels for which the width is smaller than the characteristic dendritic nucleation size.

Original language	English
Pages (from-to)	2889-2896
Number of pages	8
Journal	ACS Energy Letters
Volume	5
Issue number	9
DOIs	https://doi.org/10.1021/acsenergylett.0c01543
State	Published - 11 Sep 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
Copyright © 2020 American Chemical Society.

Funding

We acknowledge the MRSEC Shared User Facilities at the University of Chicago (NSF DMR-1420709). We gratefully acknowledge support by the U.S. Department of Energy (DOE), Basic Energy Sciences, Materials Sciences and Engineering Division. This work made use of the Pritzker Nanofabrication Facility of the Institute for Molecular Engineering at the University of Chicago which receives support from Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF ECCS-1542205), a node of the National Science Foundation's National Nanotechnology Coordinated Infrastructure. We acknowledge the MRSEC Shared User Facilities at the University of Chicago (NSF DMR-1420709). We gratefully acknowledge support by the U.S. Department of Energy (DOE), Basic Energy Sciences, Materials Sciences and Engineering Division. This work made use of the Pritzker Nanofabrication Facility of the Institute for Molecular Engineering at the University of Chicago, which receives support from Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF ECCS-1542205), a node of the National Science Foundation’s National Nanotechnology Coordinated Infrastructure. We acknowledge the MRSEC Shared User Facilities at the University of Chicago (NSF DMR-1420709).

Funders	Funder number
National Science Foundation	DMR-1420709, ECCS-1542205
U.S. Department of Energy
Basic Energy Sciences
University of Chicago
Division of Materials Sciences and Engineering
Materials Research Science and Engineering Center, Harvard University

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

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10.1021/acsenergylett.0c01543

Cite this

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abstract = "The tendency of metals to form uncontrolled dendritic morphologies during electrodeposition hinders the development of safe and reliable metal batteries. Multiphase nanostructured electrolytes can suppress dendritic growth if the mechanical modulus of the electrolyte is high relative to that of the metal or if the conducting channels are confined to nanoscale dimensions. Direct visualization and analysis of electrodeposition within polymeric nanostructures elucidates the structure-property relationships and mechanisms underlying the suppression of dendrite growth. Here, we fabricate precisely structured multiphase films composed of nanochannels of a polymeric electrolyte in a background of nonconductive polymer on top of coplanar electrodes. The devices enable imaging and analysis of electrodeposition behavior as a function of channel width by scanning electron microscopy. We find that electrodeposition is confined to individual conductive channels and that radial propagation of the dendritic morphology is suppressed in channels for which the width is smaller than the characteristic dendritic nucleation size.",

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Stabilizing dendritic electrodeposition by limiting spatial dimensions in nanostructured electrolytes

Abstract

Bibliographical note

Funding

UN SDGs

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