Molecular Layer Deposition of Crosslinked Polymeric Lithicone for Superior Lithium Metal Anodes
Open Access
- 1 January 2021
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Energy Material Advances
Abstract
In this work, we for the first time developed a novel lithium-containing crosslinked polymeric material, a lithicone that enables excellent protection effects over lithium (Li) metal anodes. This new lithicone was synthesized via an accurately controllable molecular layer deposition (MLD) process, in which lithium tert-butoxide (LTB) and glycerol (GL) were used as precursors. The resultant LiGL lithicone was analyzed using a suite of characterizations. Furthermore, we found that the LiGL thichicone could serve as an exceptional polymeric protection film over Li metal anodes. Our experimental data revealed that the Li electrodes coated by this LiGL lithicone can achieve a superior cycling stability, accounting for an extremely long cyclability of 13,600 Li-stripping/plating cycles and having no failures so far in Li/Li symmetric cells at a current density of 5mA/cm2 and an areal capacity of 1 mAh/cm2. We found that, with a sufficient protection by this LiGL coating, Li electrodes could realize long-term stable cyclability with little formation of Li dendrites and solid electrolyte interphase. This novel LiGL represents a facile and effective solution to the existing issues of Li anodes and potentially paves a technically feasible route for lithium metal batteries.Keywords
Funding Information
- DOE Office of Science
- Argonne National Laboratory (DE-AC02-06CH11357)
- Research Corporation for Science Advancement (26829)
- University of Arkansas
- National Science Foundation (OIA-1457888)
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