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Title: Strong texturing of lithium metal in batteries

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America

Lithium, with its high theoretical specific capacity and lowest electrochemical potential, has been recognized as the ultimate negative electrode material for next-generation lithium-based high-energy-density batteries. However, a key challenge that has yet to be overcome is the inferior reversibility of Li plating and stripping, typically thought to be related to the uncontrollable morphology evolution of the Li anode during cycling. Here we show that Li-metal texturing (preferential crystallographic orientation) occurs during electrochemical deposition, which governs the morphological change of the Li anode. X-ray diffraction pole-figure analysis demonstrates that the texture of Li deposits is primarily dependent on the type of additive or cross-over molecule from the cathode side. With adsorbed additives, like LiNO3 and polysulfide, the lithium deposits are strongly textured, with Li (110) planes parallel to the substrate, and thus exhibit uniform, rounded morphology. A growth diagram of lithium deposits is given to connect various texture and morphology scenarios for different battery electrolytes. In conclusion, this understanding of lithium electrocrystallization from the crystallographic point of view provides significant insight for future lithium anode materials design in high-energy-density batteries.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1439108
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Vol. 114, Issue 46; ISSN 0027-8424
Publisher:
National Academy of Sciences, Washington, DC (United States)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 144 works
Citation information provided by
Web of Science

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Influence of Current Density on Graphite Anode Failure in Lithium-Ion Batteries journal January 2019
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Inside Back Cover: A Sustainable Solid Electrolyte Interphase for High‐Energy‐Density Lithium Metal Batteries Under Practical Conditions (Angew. Chem. Int. Ed. 8/2020) journal February 2020
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Measuring the Coulombic Efficiency of Lithium Metal Cycling in Anode-Free Lithium Metal Batteries journal January 2018
Marginal Magnesium Doping for High‐Performance Lithium Metal Batteries journal September 2019
A Sustainable Solid Electrolyte Interphase for High‐Energy‐Density Lithium Metal Batteries Under Practical Conditions journal February 2020
Combinatorial Methods for Improving Lithium Metal Cycling Efficiency journal January 2018
Uniform High Ionic Conducting Lithium Sulfide Protection Layer for Stable Lithium Metal Anode journal April 2019
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Stabilizing a sodium-metal battery with the synergy effects of a sodiophilic matrix and fluorine-rich interface journal January 2019
Fast lithium growth and short circuit induced by localized-temperature hotspots in lithium batteries journal May 2019
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A Sustainable Solid Electrolyte Interphase for High‐Energy‐Density Lithium Metal Batteries Under Practical Conditions journal January 2020
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On our Limited Understanding of Electrodeposition journal January 2019
Innenrücktitelbild: A Sustainable Solid Electrolyte Interphase for High‐Energy‐Density Lithium Metal Batteries Under Practical Conditions (Angew. Chem. 8/2020) journal January 2020
Layered LiTiO 2 for the protection of Li 2 S cathodes against dissolution: mechanisms of the remarkable performance boost journal January 2018
Additive‐Assisted Novel Dual‐Salt Electrolyte Addresses Wide Temperature Operation of Lithium–Metal Batteries journal March 2019
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Designing polymers for advanced battery chemistries journal April 2019
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Bio‐Inspired Stable Lithium‐Metal Anodes by Co‐depositing Lithium with a 2D Vermiculite Shuttle journal May 2019
Machine Learning Enabled Computational Screening of Inorganic Solid Electrolytes for Suppression of Dendrite Formation in Lithium Metal Anodes journal August 2018
Design rules for liquid crystalline electrolytes for enabling dendrite-free lithium metal batteries journal October 2020
Machine Learning Enabled Computational Screening of Inorganic Solid Electrolytes for Dendrite Suppression with Li Metal Anode text January 2018

Figures / Tables (4)