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Nano Research 2017, 10(11): 3754-3764 https://doi.org/10.1007/s12274-017-1588-1
Research Article | Issue | Published: 25 July 2017

Engineering the surface of LiCoO2 electrodes using atomic layer deposition for stable high-voltage lithium ion batteries

Show Author's Information Jin Xie1,  Jie Zhao1,  Yayuan Liu1,  Haotian Wang2,  Chong Liu1,  Tong Wu1,  Po-Chun Hsu1,  Dingchang Lin1,  Yang Jin1,  Yi Cui1,3( )
Department of Materials Science and EngineeringStanford UniversityStanford, CA94305USA
Department of Applied PhysicsStanford UniversityStanford, CA94305USA
Stanford Institute for Materials and Energy SciencesSLAC National Accelerator LaboratoryMenlo Park, CA94025USA
Keywords:
atomic layer deposition, Lithium ion batteries, lithium cobalt oxide
Cite this article:
Xie J, Zhao J, Liu Y, et al. Engineering the surface of LiCoO2 electrodes using atomic layer deposition for stable high-voltage lithium ion batteries. Nano Research, 2017, 10(11): 3754-3764. https://doi.org/10.1007/s12274-017-1588-1
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Abstract Full text Electronic supplementary material About this article

Developing advanced technologies to stabilize positive electrodes of lithium ion batteries under high-voltage operation is becoming increasingly important, owing to the potential to achieve substantially enhanced energy density for applications such as portable electronics and electrical vehicles. Here, we deposited chemically inert and ionically conductive LiAlO2 interfacial layers on LiCoO2 electrodes using the atomic layer deposition technique. During prolonged cycling at high-voltage, the LiAlO2 coating not only prevented interfacial reactions between the LiCoO2 electrode and electrolyte, as confirmed by electrochemical impedance spectroscopy and Raman characterizations, but also allowed lithium ions to freely diffuse into LiCoO2 without sacrificing the power density. As a result, a capacity value close to 200 mA·h·g–1 was achieved for the LiCoO2 electrodes with commercial level loading densities, cycled at the cut-off potential of 4.6 V vs. Li+/Li for 50 stable cycles; this represents a 40% capacity gain, compared with the values obtained for commercial samples cycled at the cut-off potential of 4.2 V vs. Li+/Li.


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Electronic supplementary material
About this article

Engineering the surface of LiCoO2 electrodes using atomic layer deposition for stable high-voltage lithium ion batteries

Show Author's information Jin Xie1, Jie Zhao1, Yayuan Liu1, Haotian Wang2, Chong Liu1, Tong Wu1, Po-Chun Hsu1, Dingchang Lin1, Yang Jin1, Yi Cui1,3( )
Department of Materials Science and EngineeringStanford UniversityStanford, CA94305USA
Department of Applied PhysicsStanford UniversityStanford, CA94305USA
Stanford Institute for Materials and Energy SciencesSLAC National Accelerator LaboratoryMenlo Park, CA94025USA

Abstract

Developing advanced technologies to stabilize positive electrodes of lithium ion batteries under high-voltage operation is becoming increasingly important, owing to the potential to achieve substantially enhanced energy density for applications such as portable electronics and electrical vehicles. Here, we deposited chemically inert and ionically conductive LiAlO2 interfacial layers on LiCoO2 electrodes using the atomic layer deposition technique. During prolonged cycling at high-voltage, the LiAlO2 coating not only prevented interfacial reactions between the LiCoO2 electrode and electrolyte, as confirmed by electrochemical impedance spectroscopy and Raman characterizations, but also allowed lithium ions to freely diffuse into LiCoO2 without sacrificing the power density. As a result, a capacity value close to 200 mA·h·g–1 was achieved for the LiCoO2 electrodes with commercial level loading densities, cycled at the cut-off potential of 4.6 V vs. Li+/Li for 50 stable cycles; this represents a 40% capacity gain, compared with the values obtained for commercial samples cycled at the cut-off potential of 4.2 V vs. Li+/Li.

Keywords: atomic layer deposition, Lithium ion batteries, lithium cobalt oxide

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Publication history
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Acknowledgements

Publication history

Received: 25 January 2017
Revised: 07 March 2017
Accepted: 12 March 2017
Published: 25 July 2017
Issue date: November 2017

Copyright

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2017

Acknowledgements

Acknowledgements

Part of this work was performed at the Stanford Nano Shared Facilities (SNSF) and Stanford Nanofabrication Facility (SNF). We thank Allen Pei, Yongming Sun, and Kipil Lim for insightful discussion, Michelle Rincon, Christopher Neumann and Feifei Lian for technical assistance.

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