Unexpected improved performance of ALD coated LiCoO2/graphite li-ion batteries

Yoon Seok Jung; Peng Lu; Andrew S. Cavanagh; Chunmei Ban; Gi Heon Kim; Se Hee Lee; Steven M. George; Stephen J. Harris; Anne C. Dillon

doi:10.1002/aenm.201200370

Unexpected improved performance of ALD coated LiCoO₂/graphite li-ion batteries

Yoon Seok Jung, Peng Lu, Andrew S. Cavanagh, Chunmei Ban, Gi Heon Kim, Se Hee Lee, Steven M. George, Stephen J. Harris, Anne C. Dillon

Department of Chemical and Biomolecular Engineering

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

198 Citations (Scopus)

Abstract

The performance of Al₂O₃atomic layer deposition (ALD) coatings for LiCoO₂/ natural graphite (LCO/NG) batteries is investigated, where various permutations of the electrodes are coated in a full battery. Coating both electrodes with - 1 nm of alumina as well as coating only the LCO (positive electrode) enables improved performance when cycling at high voltage, where the LCO is known to degrade. However, we found that coating only the NG (negative electrode) also improves the performance of the whole battery when cycling at high voltage. Under these conditions, the uncoated LCO (positive electrode) should degrade quickly, and the NG should be unaffected. A variety of characterization techniques show the surface reactions that occur on the negative electrode and positive electrode are related, resulting in the enhanced performance of the uncoated LCO.

Original language	English
Pages (from-to)	213-219
Number of pages	7
Journal	Advanced Energy Materials
Volume	3
Issue number	2
DOIs	https://doi.org/10.1002/aenm.201200370
Publication status	Published - 2013 Feb

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Materials Science(all)

UN SDGs

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

Access to Document

10.1002/aenm.201200370

Cite this

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title = "Unexpected improved performance of ALD coated LiCoO2/graphite li-ion batteries",

abstract = "The performance of Al2O3atomic layer deposition (ALD) coatings for LiCoO2/ natural graphite (LCO/NG) batteries is investigated, where various permutations of the electrodes are coated in a full battery. Coating both electrodes with - 1 nm of alumina as well as coating only the LCO (positive electrode) enables improved performance when cycling at high voltage, where the LCO is known to degrade. However, we found that coating only the NG (negative electrode) also improves the performance of the whole battery when cycling at high voltage. Under these conditions, the uncoated LCO (positive electrode) should degrade quickly, and the NG should be unaffected. A variety of characterization techniques show the surface reactions that occur on the negative electrode and positive electrode are related, resulting in the enhanced performance of the uncoated LCO.",

author = "Jung, {Yoon Seok} and Peng Lu and Cavanagh, {Andrew S.} and Chunmei Ban and Kim, {Gi Heon} and Lee, {Se Hee} and George, {Steven M.} and Harris, {Stephen J.} and Dillon, {Anne C.}",

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AU - Jung, Yoon Seok

AU - Lu, Peng

AU - Cavanagh, Andrew S.

AU - Ban, Chunmei

AU - Kim, Gi Heon

AU - Lee, Se Hee

AU - George, Steven M.

AU - Harris, Stephen J.

AU - Dillon, Anne C.

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AB - The performance of Al2O3atomic layer deposition (ALD) coatings for LiCoO2/ natural graphite (LCO/NG) batteries is investigated, where various permutations of the electrodes are coated in a full battery. Coating both electrodes with - 1 nm of alumina as well as coating only the LCO (positive electrode) enables improved performance when cycling at high voltage, where the LCO is known to degrade. However, we found that coating only the NG (negative electrode) also improves the performance of the whole battery when cycling at high voltage. Under these conditions, the uncoated LCO (positive electrode) should degrade quickly, and the NG should be unaffected. A variety of characterization techniques show the surface reactions that occur on the negative electrode and positive electrode are related, resulting in the enhanced performance of the uncoated LCO.

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