Mechanism for Al2O3 Atomic Layer Deposition on LiMn2O4 from In Situ Measurements and Ab Initio Calculations

Journal Article · Mon Oct 01 00:00:00 EDT 2018 · Chem

DOI:https://doi.org/10.1016/j.chempr.2018.08.006· OSTI ID:1570069

Chen, Lin; Warburton, Robert E.; Chen, Kan-Sheng; Libera, Joseph A.; Johnson, Christopher; Yang, Zhenzhen; Hersam, Mark C.; Greeley, Jeffrey P.; Elam, Jeffrey W.

Deposition of protective coatings on lithium-ion battery electrode materials has been shown to enhance electrochemical capacity retention. Despite this, little is understood regarding the nature of the interface formed between the protective coating and the electrode. Here, we report a detailed mechanism for Al₂O₃ atomic layer deposition on LiMn₂O₄. We find that the initial stages of Al₂O₃ ALD on LiMn₂O₄ lead to sub-monolayer deposits that enhance electrochemical performance.

• Research Organization: Energy Frontier Research Centers (EFRC) (United States). Center for Electrical Energy Storage (CEES); Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE; USDOE Office of Science (SC), Energy Frontier Research Center. Center for Electrochemical Energy Science (CEES)
• Grant/Contract Number: AC02-06CH11357
• OSTI ID: 1570069
• Alternate ID(s): OSTI ID: 1483654
• Journal Information: Chem, Journal Name: Chem Vol. 4 Journal Issue: 10; ISSN 2451-9294
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
atomic layer deposition
coating and doping in LMO and NMC
fundamental understanding