Evolution of Protrusions on Lithium Metal Anodes Stabilized by a Solid Block Copolymer Electrolyte Studied Using Time-Resolved X-ray Tomography
Abstract
The 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 batteries is short circuiting due to the uncontrolled propagation of lithium protrusions that often have a dendritic morphology. In this paper, the electrodeposition of metallic lithium through a rigid polystyrene-b-poly(ethylene oxide) (PS-b-PEO or SEO) block copolymer electrolyte was studied using hard X-ray microtomography. In this system, protrusions were approximately ellipsoidal globules: we take advantage of this simple geometry to quantify their growth as a function of polarization time and electrolyte salt concentration. The growth of 47 different globules was tracked with time to obtain average velocities of globule growth into the electrolyte. The globule diameter was a linear function of globule height in the electrolyte with a slope of about 6, independent of time and electrolyte salt concentration.
- Authors:
-
[1];
[2];
[2];
[1];
[3];
[2]
- Univ. of California, Berkeley, CA (United States)
- Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office
- OSTI Identifier:
- 1843006
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ACS Applied Materials and Interfaces
- Additional Journal Information:
- Journal Volume: 13; Journal Issue: 23; Journal ID: ISSN 1944-8244
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; lithium dendrite; electrodeposited lithium morphology; polymer electrolyte; salt concentration; polarization time; lithium metal; rechargeable batteries
Citation Formats
Veeraraghavan, Vijay D., Frenck, Louise, Maslyn, Jacqueline A., Loo, Whitney S., Parkinson, Dilworth Y., and Balsara, Nitash P. Evolution of Protrusions on Lithium Metal Anodes Stabilized by a Solid Block Copolymer Electrolyte Studied Using Time-Resolved X-ray Tomography. United States: N. p., 2021.
Web. doi:10.1021/acsami.1c04582.
Veeraraghavan, Vijay D., Frenck, Louise, Maslyn, Jacqueline A., Loo, Whitney S., Parkinson, Dilworth Y., & Balsara, Nitash P. Evolution of Protrusions on Lithium Metal Anodes Stabilized by a Solid Block Copolymer Electrolyte Studied Using Time-Resolved X-ray Tomography. United States. https://doi.org/10.1021/acsami.1c04582
Veeraraghavan, Vijay D., Frenck, Louise, Maslyn, Jacqueline A., Loo, Whitney S., Parkinson, Dilworth Y., and Balsara, Nitash P. Mon .
"Evolution of Protrusions on Lithium Metal Anodes Stabilized by a Solid Block Copolymer Electrolyte Studied Using Time-Resolved X-ray Tomography". United States. https://doi.org/10.1021/acsami.1c04582. https://www.osti.gov/servlets/purl/1843006.
@article{osti_1843006,
title = {Evolution of Protrusions on Lithium Metal Anodes Stabilized by a Solid Block Copolymer Electrolyte Studied Using Time-Resolved X-ray Tomography},
author = {Veeraraghavan, Vijay D. and Frenck, Louise and Maslyn, Jacqueline A. and Loo, Whitney S. and Parkinson, Dilworth Y. and Balsara, Nitash P.},
abstractNote = {The 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 batteries is short circuiting due to the uncontrolled propagation of lithium protrusions that often have a dendritic morphology. In this paper, the electrodeposition of metallic lithium through a rigid polystyrene-b-poly(ethylene oxide) (PS-b-PEO or SEO) block copolymer electrolyte was studied using hard X-ray microtomography. In this system, protrusions were approximately ellipsoidal globules: we take advantage of this simple geometry to quantify their growth as a function of polarization time and electrolyte salt concentration. The growth of 47 different globules was tracked with time to obtain average velocities of globule growth into the electrolyte. The globule diameter was a linear function of globule height in the electrolyte with a slope of about 6, independent of time and electrolyte salt concentration.},
doi = {10.1021/acsami.1c04582},
journal = {ACS Applied Materials and Interfaces},
number = 23,
volume = 13,
place = {United States},
year = {Mon Jun 07 00:00:00 EDT 2021},
month = {Mon Jun 07 00:00:00 EDT 2021}
}
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